| Area | Census 2000 | 7/1/2008 | Absolute Change | Relative Change |
| Iowa | 2,926,324 | 3,002,555 | 76,231 | 2.61% |
|---|---|---|---|---|
| Ackley city | 1,809 | 1,665 | -144 | -7.96% |
| Ackworth city | 85 | 116 | 31 | 36.47% |
| Adair city | 839 | 713 | -126 | -15.02% |
| Adel city | 3,435 | 4,428 | 993 | 28.91% |
| Afton city | 917 | 905 | -12 | -1.31% |
| Agency city | 622 | 644 | 22 | 3.54% |
| Ainsworth city | 524 | 537 | 13 | 2.48% |
| Akron city | 1,489 | 1,420 | -69 | -4.63% |
| Albert City city | 709 | 690 | -19 | -2.68% |
| Albia city | 3,706 | 3,559 | -147 | -3.97% |
| Albion city | 592 | 575 | -17 | -2.87% |
| Alburnett city | 559 | 551 | -8 | -1.43% |
| Alden city | 904 | 818 | -86 | -9.51% |
| Alexander city | 165 | 157 | -8 | -4.85% |
| Algona city | 5,741 | 5,328 | -413 | -7.19% |
| Alleman city | 439 | 435 | -4 | -0.91% |
| Allerton city | 559 | 531 | -28 | -5.01% |
| Allison city | 1,006 | 950 | -56 | -5.57% |
| Alta city | 1,865 | 1,864 | -1 | -0.05% |
| Alta Vista city | 286 | 265 | -21 | -7.34% |
| Alton city | 1,095 | 1,127 | 32 | 2.92% |
| Altoona city | 10,345 | 13,854 | 3,509 | 33.92% |
| Alvord city | 187 | 177 | -10 | -5.35% |
| Ames city | 50,731 | 56,510 | 5,779 | 11.39% |
| Anamosa city | 5,494 | 5,736 | 242 | 4.40% |
| Andover city | 87 | 84 | -3 | -3.45% |
| Andrew city | 460 | 437 | -23 | -5.00% |
| Anita city | 1,049 | 1,135 | 86 | 8.20% |
| Ankeny city | 27,117 | 42,287 | 15,170 | 55.94% |
| Anthon city | 649 | 631 | -18 | -2.77% |
| Aplington city | 1,054 | 999 | -55 | -5.22% |
| Arcadia city | 443 | 444 | 1 | 0.23% |
| Archer city | 126 | 115 | -11 | -8.73% |
| Aredale city | 89 | 76 | -13 | -14.61% |
| Arion city | 136 | 112 | -24 | -17.65% |
| Arispe city | 89 | 87 | -2 | -2.25% |
| Arlington city | 490 | 454 | -36 | -7.35% |
| Armstrong city | 979 | 917 | -62 | -6.33% |
| Arnolds Park city | 1,162 | 1,249 | 87 | 7.49% |
| Arthur city | 245 | 209 | -36 | -14.69% |
| Asbury city | 2,450 | 3,848 | 1,398 | 57.06% |
| Ashton city | 461 | 423 | -38 | -8.24% |
| Aspinwall city | 58 | 64 | 6 | 10.34% |
| Atalissa city | 283 | 303 | 20 | 7.07% |
| Atkins city | 977 | 1,560 | 583 | 59.67% |
| Atlantic city | 7,257 | 6,777 | -480 | -6.61% |
| Auburn city | 296 | 270 | -26 | -8.78% |
| Audubon city | 2,382 | 2,110 | -272 | -11.42% |
| Aurelia city | 1,062 | 933 | -129 | -12.15% |
| Aurora city | 194 | 186 | -8 | -4.12% |
| Avoca city | 1,610 | 1,536 | -74 | -4.60% |
| Ayrshire city | 202 | 177 | -25 | -12.38% |
| Badger city | 610 | 578 | -32 | -5.25% |
| Bagley city | 354 | 315 | -39 | -11.02% |
| Baldwin city | 127 | 134 | 7 | 5.51% |
| Balltown city | 73 | 72 | -1 | -1.37% |
| Bancroft city | 808 | 729 | -79 | -9.78% |
| Bankston city | 27 | 26 | -1 | -3.70% |
| Barnes City city | 201 | 200 | -1 | -0.50% |
| Barnum city | 195 | 193 | -2 | -1.03% |
| Bassett city | 74 | 69 | -5 | -6.76% |
| Batavia city | 500 | 473 | -27 | -5.40% |
| Battle Creek city | 743 | 651 | -92 | -12.38% |
| Baxter city | 1,052 | 1,043 | -9 | -0.86% |
| Bayard city | 536 | 474 | -62 | -11.57% |
| Beacon city | 518 | 527 | 9 | 1.74% |
| Beaconsfield city | 11 | 11 | 0 | 0.00% |
| Beaman city | 210 | 173 | -37 | -17.62% |
| Beaver city | 53 | 51 | -2 | -3.77% |
| Bedford city | 1,620 | 1,460 | -160 | -9.88% |
| Belle Plaine city | 2,878 | 2,812 | -66 | -2.29% |
| Bellevue city | 2,350 | 2,337 | -13 | -0.55% |
| Belmond city | 2,560 | 2,304 | -256 | -10.00% |
| Bennett city | 395 | 365 | -30 | -7.59% |
| Benton city | 40 | 38 | -2 | -5.00% |
| Berkley city | 24 | 27 | 3 | 12.50% |
| Bernard city | 97 | 94 | -3 | -3.09% |
| Bertram city | 681 | 287 | -394 | -57.86% |
| Bettendorf city | 31,275 | 32,584 | 1,309 | 4.19% |
| Bevington city | 58 | 60 | 2 | 3.45% |
| Birmingham city | 423 | 420 | -3 | -0.71% |
| Blairsburg city | 235 | 215 | -20 | -8.51% |
| Blairstown city | 682 | 685 | 3 | 0.44% |
| Blakesburg city | 374 | 356 | -18 | -4.81% |
| Blanchard city | 61 | 62 | 1 | 1.64% |
| Blencoe city | 231 | 199 | -32 | -13.85% |
| Blockton city | 192 | 160 | -32 | -16.67% |
| Bloomfield city | 2,601 | 2,582 | -19 | -0.73% |
| Blue Grass city | 1,169 | 1,341 | 172 | 14.71% |
| Bode city | 327 | 297 | -30 | -9.17% |
| Bonaparte city | 458 | 448 | -10 | -2.18% |
| Bondurant city | 1,846 | 2,714 | 868 | 47.02% |
| Boone city | 12,803 | 12,614 | -189 | -1.48% |
| Bouton city | 136 | 161 | 25 | 18.38% |
| Boxholm city | 215 | 200 | -15 | -6.98% |
| Boyden city | 672 | 683 | 11 | 1.64% |
| Braddyville city | 176 | 163 | -13 | -7.39% |
| Bradgate city | 101 | 92 | -9 | -8.91% |
| Brandon city | 311 | 334 | 23 | 7.40% |
| Brayton city | 145 | 132 | -13 | -8.97% |
| Breda city | 477 | 449 | -28 | -5.87% |
| Bridgewater city | 178 | 161 | -17 | -9.55% |
| Brighton city | 687 | 683 | -4 | -0.58% |
| Bristow city | 202 | 190 | -12 | -5.94% |
| Britt city | 2,052 | 1,920 | -132 | -6.43% |
| Bronson city | 269 | 283 | 14 | 5.20% |
| Brooklyn city | 1,367 | 1,355 | -12 | -0.88% |
| Brunsville city | 146 | 139 | -7 | -4.79% |
| Buck Grove city | 49 | 51 | 2 | 4.08% |
| Buckeye city | 110 | 96 | -14 | -12.73% |
| Buffalo Center city | 963 | 856 | -107 | -11.11% |
| Buffalo city | 1,321 | 1,342 | 21 | 1.59% |
| Burlington city | 26,839 | 25,327 | -1,512 | -5.63% |
| Burt city | 556 | 497 | -59 | -10.61% |
| Bussey city | 450 | 436 | -14 | -3.11% |
| Calamus city | 394 | 395 | 1 | 0.25% |
| Callender city | 424 | 425 | 1 | 0.24% |
| Calmar city | 1,058 | 1,017 | -41 | -3.88% |
| Calumet city | 181 | 152 | -29 | -16.02% |
| Camanche city | 4,215 | 4,280 | 65 | 1.54% |
| Cambridge city | 819 | 809 | -10 | -1.22% |
| Cantril city | 257 | 255 | -2 | -0.78% |
| Carbon city | 28 | 22 | -6 | -21.43% |
| Carlisle city | 3,497 | 3,693 | 196 | 5.60% |
| Carpenter city | 130 | 128 | -2 | -1.54% |
| Carroll city | 10,106 | 9,985 | -121 | -1.20% |
| Carson city | 668 | 725 | 57 | 8.53% |
| Carter Lake city | 3,248 | 3,268 | 20 | 0.62% |
| Cascade city | 1,958 | 2,118 | 160 | 8.17% |
| Casey city | 478 | 393 | -85 | -17.78% |
| Castalia city | 175 | 165 | -10 | -5.71% |
| Castana city | 178 | 159 | -19 | -10.67% |
| Cedar Falls city | 36,145 | 38,059 | 1,914 | 5.30% |
| Cedar Rapids city | 120,758 | 128,056 | 7,298 | 6.04% |
| Center Junction city | 131 | 114 | -17 | -12.98% |
| Center Point city | 2,007 | 2,342 | 335 | 16.69% |
| Centerville city | 5,924 | 5,442 | -482 | -8.14% |
| Central City city | 1,157 | 1,183 | 26 | 2.25% |
| Centralia city | 101 | 99 | -2 | -1.98% |
| Chariton city | 4,573 | 4,419 | -154 | -3.37% |
| Charles City city | 7,812 | 7,470 | -342 | -4.38% |
| Charlotte city | 421 | 438 | 17 | 4.04% |
| Charter Oak city | 530 | 500 | -30 | -5.66% |
| Chatsworth city | 89 | 88 | -1 | -1.12% |
| Chelsea city | 287 | 272 | -15 | -5.23% |
| Cherokee city | 5,369 | 4,697 | -672 | -12.52% |
| Chester city | 151 | 137 | -14 | -9.27% |
| Chillicothe city | 90 | 85 | -5 | -5.56% |
| Churdan city | 418 | 361 | -57 | -13.64% |
| Cincinnati city | 428 | 391 | -37 | -8.64% |
| Clare city | 190 | 174 | -16 | -8.42% |
| Clarence city | 1,008 | 966 | -42 | -4.17% |
| Clarinda city | 5,690 | 5,493 | -197 | -3.46% |
| Clarion city | 2,968 | 2,718 | -250 | -8.42% |
| Clarksville city | 1,441 | 1,336 | -105 | -7.29% |
| Clayton city | 55 | 51 | -4 | -7.27% |
| Clear Lake city | 8,161 | 7,820 | -341 | -4.18% |
| Clearfield city | 371 | 352 | -19 | -5.12% |
| Cleghorn city | 250 | 226 | -24 | -9.60% |
| Clemons city | 148 | 147 | -1 | -0.68% |
| Clermont city | 716 | 688 | -28 | -3.91% |
| Clinton city | 27,772 | 26,407 | -1,365 | -4.92% |
| Clio city | 91 | 71 | -20 | -21.98% |
| Clive city | 12,855 | 15,234 | 2,379 | 18.51% |
| Clutier city | 229 | 222 | -7 | -3.06% |
| Coburg city | 31 | 29 | -2 | -6.45% |
| Coggon city | 745 | 714 | -31 | -4.16% |
| Coin city | 252 | 198 | -54 | -21.43% |
| Colesburg city | 412 | 376 | -36 | -8.74% |
| Colfax city | 2,223 | 2,212 | -11 | -0.49% |
| College Springs city | 246 | 227 | -19 | -7.72% |
| Collins city | 499 | 481 | -18 | -3.61% |
| Colo city | 868 | 876 | 8 | 0.92% |
| Columbus City city | 376 | 349 | -27 | -7.18% |
| Columbus Junction city | 1,900 | 1,827 | -73 | -3.84% |
| Colwell city | 76 | 74 | -2 | -2.63% |
| Conesville city | 424 | 439 | 15 | 3.54% |
| Conrad city | 1,055 | 992 | -63 | -5.97% |
| Conway city | 63 | 58 | -5 | -7.94% |
| Coon Rapids city | 1,305 | 1,256 | -49 | -3.75% |
| Coppock city | 57 | 64 | 7 | 12.28% |
| Coralville city | 15,123 | 18,478 | 3,355 | 22.18% |
| Corning city | 1,783 | 1,600 | -183 | -10.26% |
| Correctionville city | 851 | 846 | -5 | -0.59% |
| Corwith city | 350 | 313 | -37 | -10.57% |
| Corydon city | 1,591 | 1,459 | -132 | -8.30% |
| Cotter city | 48 | 47 | -1 | -2.08% |
| Coulter city | 262 | 250 | -12 | -4.58% |
| Council Bluffs city | 58,268 | 59,536 | 1,268 | 2.18% |
| Craig city | 102 | 96 | -6 | -5.88% |
| Crawfordsville city | 295 | 301 | 6 | 2.03% |
| Crescent city | 537 | 512 | -25 | -4.66% |
| Cresco city | 3,905 | 3,730 | -175 | -4.48% |
| Creston city | 7,597 | 7,594 | -3 | -0.04% |
| Cromwell city | 120 | 120 | 0 | 0.00% |
| Crystal Lake city | 285 | 259 | -26 | -9.12% |
| Cumberland city | 281 | 255 | -26 | -9.25% |
| Cumming city | 162 | 309 | 147 | 90.74% |
| Curlew city | 62 | 57 | -5 | -8.06% |
| Cushing city | 246 | 237 | -9 | -3.66% |
| Cylinder city | 110 | 98 | -12 | -10.91% |
| Dakota City city | 911 | 824 | -87 | -9.55% |
| Dallas Center city | 1,595 | 1,734 | 139 | 8.71% |
| Dana city | 84 | 76 | -8 | -9.52% |
| Danbury city | 384 | 327 | -57 | -14.84% |
| Danville city | 914 | 854 | -60 | -6.56% |
| Davenport city | 98,359 | 100,827 | 2,468 | 2.51% |
| Davis City city | 275 | 253 | -22 | -8.00% |
| Dawson city | 155 | 163 | 8 | 5.16% |
| Dayton city | 884 | 817 | -67 | -7.58% |
| De Soto city | 1,009 | 1,242 | 233 | 23.09% |
| De Witt city | 5,049 | 5,260 | 211 | 4.18% |
| Decatur City city | 199 | 189 | -10 | -5.03% |
| Decorah city | 8,172 | 7,906 | -266 | -3.26% |
| Dedham city | 280 | 229 | -51 | -18.21% |
| Deep River city | 288 | 272 | -16 | -5.56% |
| Defiance city | 346 | 314 | -32 | -9.25% |
| Delaware city | 188 | 181 | -7 | -3.72% |
| Delhi city | 458 | 493 | 35 | 7.64% |
| Delmar city | 514 | 488 | -26 | -5.06% |
| Deloit city | 288 | 280 | -8 | -2.78% |
| Delphos city | 25 | 25 | 0 | 0.00% |
| Delta city | 410 | 394 | -16 | -3.90% |
| Denison city | 7,339 | 7,184 | -155 | -2.11% |
| Denver city | 1,627 | 1,635 | 8 | 0.49% |
| Derby city | 131 | 132 | 1 | 0.76% |
| Des Moines city | 198,682 | 197,052 | -1,630 | -0.82% |
| Dexter city | 689 | 887 | 198 | 28.74% |
| Diagonal city | 312 | 298 | -14 | -4.49% |
| Dickens city | 202 | 187 | -15 | -7.43% |
| Dike city | 944 | 1,142 | 198 | 20.97% |
| Dixon city | 276 | 254 | -22 | -7.97% |
| Dolliver city | 77 | 61 | -16 | -20.78% |
| Donahue city | 293 | 294 | 1 | 0.34% |
| Donnellson city | 963 | 874 | -89 | -9.24% |
| Doon city | 533 | 522 | -11 | -2.06% |
| Dougherty city | 80 | 76 | -4 | -5.00% |
| Dow City city | 503 | 456 | -47 | -9.34% |
| Dows city | 675 | 555 | -120 | -17.78% |
| Drakesville city | 185 | 217 | 32 | 17.30% |
| Dubuque city | 57,686 | 57,250 | -436 | -0.76% |
| Dumont city | 676 | 633 | -43 | -6.36% |
| Duncombe city | 474 | 456 | -18 | -3.80% |
| Dundee city | 179 | 167 | -12 | -6.70% |
| Dunkerton city | 749 | 812 | 63 | 8.41% |
| Dunlap city | 1,139 | 1,089 | -50 | -4.39% |
| Durango city | 24 | 22 | -2 | -8.33% |
| Durant city | 1,677 | 1,713 | 36 | 2.15% |
| Dyersville city | 4,035 | 4,204 | 169 | 4.19% |
| Dysart city | 1,303 | 1,277 | -26 | -2.00% |
| Eagle Grove city | 3,712 | 3,310 | -402 | -10.83% |
| Earlham city | 1,298 | 1,347 | 49 | 3.78% |
| Earling city | 471 | 431 | -40 | -8.49% |
| Earlville city | 900 | 831 | -69 | -7.67% |
| Early city | 605 | 520 | -85 | -14.05% |
| East Peru city | 153 | 138 | -15 | -9.80% |
| Eddyville city | 1,064 | 1,072 | 8 | 0.75% |
| Edgewood city | 923 | 870 | -53 | -5.74% |
| Elberon city | 245 | 231 | -14 | -5.71% |
| Eldon city | 998 | 973 | -25 | -2.51% |
| Eldora city | 3,035 | 2,734 | -301 | -9.92% |
| Eldridge city | 4,159 | 4,880 | 721 | 17.34% |
| Elgin city | 676 | 619 | -57 | -8.43% |
| Elk Horn city | 649 | 609 | -40 | -6.16% |
| Elk Run Heights city | 1,052 | 1,079 | 27 | 2.57% |
| Elkader city | 1,465 | 1,346 | -119 | -8.12% |
| Elkhart city | 362 | 473 | 111 | 30.66% |
| Elkport city | 88 | 101 | 13 | 14.77% |
| Elliott city | 402 | 362 | -40 | -9.95% |
| Ellston city | 57 | 55 | -2 | -3.51% |
| Ellsworth city | 531 | 514 | -17 | -3.20% |
| Elma city | 598 | 569 | -29 | -4.85% |
| Ely city | 1,149 | 1,514 | 365 | 31.77% |
| Emerson city | 480 | 490 | 10 | 2.08% |
| Emmetsburg city | 3,958 | 3,616 | -342 | -8.64% |
| Epworth city | 1,428 | 1,620 | 192 | 13.45% |
| Essex city | 884 | 795 | -89 | -10.07% |
| Estherville city | 6,656 | 6,291 | -365 | -5.48% |
| Evansdale city | 4,526 | 5,056 | 530 | 11.71% |
| Everly city | 647 | 636 | -11 | -1.70% |
| Exira city | 810 | 722 | -88 | -10.86% |
| Exline city | 191 | 164 | -27 | -14.14% |
| Fairbank city | 1,041 | 991 | -50 | -4.80% |
| Fairfax city | 889 | 1,875 | 986 | 110.91% |
| Fairfield city | 9,509 | 9,218 | -291 | -3.06% |
| Farley city | 1,334 | 1,391 | 57 | 4.27% |
| Farmersburg city | 300 | 273 | -27 | -9.00% |
| Farmington city | 756 | 718 | -38 | -5.03% |
| Farnhamville city | 430 | 358 | -72 | -16.74% |
| Farragut city | 509 | 457 | -52 | -10.22% |
| Fayette city | 1,300 | 1,258 | -42 | -3.23% |
| Fenton city | 317 | 263 | -54 | -17.03% |
| Ferguson city | 126 | 123 | -3 | -2.38% |
| Fertile city | 360 | 352 | -8 | -2.22% |
| Floris city | 153 | 152 | -1 | -0.65% |
| Floyd city | 361 | 337 | -24 | -6.65% |
| Fonda city | 648 | 562 | -86 | -13.27% |
| Fontanelle city | 692 | 635 | -57 | -8.24% |
| Forest City city | 4,362 | 4,098 | -264 | -6.05% |
| Fort Atkinson city | 389 | 361 | -28 | -7.20% |
| Fort Dodge city | 25,136 | 25,180 | 44 | 0.18% |
| Fort Madison city | 10,715 | 10,897 | 182 | 1.70% |
| Fostoria city | 230 | 242 | 12 | 5.22% |
| Franklin city | 136 | 124 | -12 | -8.82% |
| Fraser city | 137 | 117 | -20 | -14.60% |
| Fredericksburg city | 984 | 878 | -106 | -10.77% |
| Frederika city | 199 | 191 | -8 | -4.02% |
| Fredonia city | 251 | 218 | -33 | -13.15% |
| Fremont city | 704 | 687 | -17 | -2.41% |
| Fruitland city | 703 | 945 | 242 | 34.42% |
| Galt city | 30 | 28 | -2 | -6.67% |
| Galva city | 368 | 296 | -72 | -19.57% |
| Garber city | 103 | 74 | -29 | -28.16% |
| Garden Grove city | 250 | 235 | -15 | -6.00% |
| Garnavillo city | 754 | 686 | -68 | -9.02% |
| Garner city | 2,922 | 2,932 | 10 | 0.34% |
| Garrison city | 413 | 401 | -12 | -2.91% |
| Garwin city | 565 | 535 | -30 | -5.31% |
| Geneva city | 171 | 171 | 0 | 0.00% |
| George city | 1,051 | 970 | -81 | -7.71% |
| Gibson city | 92 | 72 | -20 | -21.74% |
| Gilbert city | 987 | 1,050 | 63 | 6.38% |
| Gilbertville city | 767 | 798 | 31 | 4.04% |
| Gillett Grove city | 55 | 46 | -9 | -16.36% |
| Gilman city | 600 | 570 | -30 | -5.00% |
| Gilmore City city | 556 | 489 | -67 | -12.05% |
| Gladbrook city | 1,015 | 990 | -25 | -2.46% |
| Glenwood city | 5,358 | 5,646 | 288 | 5.38% |
| Glidden city | 1,253 | 1,227 | -26 | -2.08% |
| Goldfield city | 680 | 607 | -73 | -10.74% |
| Goodell city | 174 | 143 | -31 | -17.82% |
| Goose Lake city | 232 | 234 | 2 | 0.86% |
| Gowrie city | 1,038 | 1,012 | -26 | -2.50% |
| Graettinger city | 900 | 831 | -69 | -7.67% |
| Graf city | 73 | 75 | 2 | 2.74% |
| Grafton city | 290 | 283 | -7 | -2.41% |
| Grand Junction city | 964 | 848 | -116 | -12.03% |
| Grand Mound city | 676 | 645 | -31 | -4.59% |
| Grand River city | 225 | 191 | -34 | -15.11% |
| Grandview city | 600 | 597 | -3 | -0.50% |
| Granger city | 583 | 1,054 | 471 | 80.79% |
| Grant city | 102 | 92 | -10 | -9.80% |
| Granville city | 325 | 321 | -4 | -1.23% |
| Gravity city | 218 | 200 | -18 | -8.26% |
| Gray city | 82 | 74 | -8 | -9.76% |
| Greeley city | 276 | 257 | -19 | -6.88% |
| Greene city | 1,099 | 976 | -123 | -11.19% |
| Greenfield city | 2,129 | 1,888 | -241 | -11.32% |
| Greenville city | 93 | 85 | -8 | -8.60% |
| Grimes city | 5,098 | 8,419 | 3,321 | 65.14% |
| Grinnell city | 9,105 | 9,167 | 62 | 0.68% |
| Griswold city | 1,039 | 951 | -88 | -8.47% |
| Grundy Center city | 2,596 | 2,519 | -77 | -2.97% |
| Gruver city | 106 | 97 | -9 | -8.49% |
| Guernsey city | 70 | 66 | -4 | -5.71% |
| Guthrie Center city | 1,668 | 1,517 | -151 | -9.05% |
| Guttenberg city | 1,987 | 1,913 | -74 | -3.72% |
| Halbur city | 202 | 211 | 9 | 4.46% |
| Hamburg city | 1,240 | 1,155 | -85 | -6.85% |
| Hamilton city | 144 | 137 | -7 | -4.86% |
| Hampton city | 4,218 | 4,134 | -84 | -1.99% |
| Hancock city | 207 | 198 | -9 | -4.35% |
| Hanlontown city | 229 | 228 | -1 | -0.44% |
| Hansell city | 96 | 96 | 0 | 0.00% |
| Harcourt city | 340 | 317 | -23 | -6.76% |
| Hardy city | 57 | 88 | 31 | 54.39% |
| Harlan city | 5,282 | 4,986 | -296 | -5.60% |
| Harper city | 134 | 114 | -20 | -14.93% |
| Harpers Ferry city | 330 | 312 | -18 | -5.45% |
| Harris city | 200 | 179 | -21 | -10.50% |
| Hartford city | 759 | 779 | 20 | 2.64% |
| Hartley city | 1,733 | 1,502 | -231 | -13.33% |
| Hartwick city | 83 | 78 | -5 | -6.02% |
| Harvey city | 277 | 264 | -13 | -4.69% |
| Hastings city | 214 | 169 | -45 | -21.03% |
| Havelock city | 177 | 169 | -8 | -4.52% |
| Haverhill city | 170 | 163 | -7 | -4.12% |
| Hawarden city | 2,478 | 2,403 | -75 | -3.03% |
| Hawkeye city | 489 | 440 | -49 | -10.02% |
| Hayesville city | 64 | 61 | -3 | -4.69% |
| Hazleton city | 950 | 901 | -49 | -5.16% |
| Hedrick city | 837 | 804 | -33 | -3.94% |
| Henderson city | 171 | 170 | -1 | -0.58% |
| Hepburn city | 39 | 27 | -12 | -30.77% |
| Hiawatha city | 6,480 | 6,688 | 208 | 3.21% |
| Hills city | 679 | 693 | 14 | 2.06% |
| Hillsboro city | 205 | 200 | -5 | -2.44% |
| Hinton city | 808 | 847 | 39 | 4.83% |
| Holland city | 250 | 256 | 6 | 2.40% |
| Holstein city | 1,470 | 1,371 | -99 | -6.73% |
| Holy Cross city | 339 | 354 | 15 | 4.42% |
| Hopkinton city | 681 | 641 | -40 | -5.87% |
| Hornick city | 253 | 240 | -13 | -5.14% |
| Hospers city | 672 | 666 | -6 | -0.89% |
| Houghton city | 130 | 126 | -4 | -3.08% |
| Hubbard city | 885 | 817 | -68 | -7.68% |
| Hudson city | 2,117 | 2,186 | 69 | 3.26% |
| Hull city | 1,960 | 2,028 | 68 | 3.47% |
| Humboldt city | 4,452 | 4,198 | -254 | -5.71% |
| Humeston city | 543 | 522 | -21 | -3.87% |
| Huxley city | 2,316 | 2,830 | 514 | 22.19% |
| Ida Grove city | 2,350 | 2,056 | -294 | -12.51% |
| Imogene city | 66 | 57 | -9 | -13.64% |
| Independence city | 6,014 | 6,119 | 105 | 1.75% |
| Indianola city | 12,998 | 14,361 | 1,363 | 10.49% |
| Inwood city | 875 | 843 | -32 | -3.66% |
| Ionia city | 277 | 260 | -17 | -6.14% |
| Iowa City city | 62,220 | 67,831 | 5,611 | 9.02% |
| Iowa Falls city | 5,193 | 4,965 | -228 | -4.39% |
| Ireton city | 585 | 584 | -1 | -0.17% |
| Irwin city | 372 | 353 | -19 | -5.11% |
| Jackson Junction city | 60 | 63 | 3 | 5.00% |
| Jamaica city | 237 | 223 | -14 | -5.91% |
| Janesville city | 829 | 837 | 8 | 0.97% |
| Jefferson city | 4,626 | 4,144 | -482 | -10.42% |
| Jesup city | 2,212 | 2,315 | 103 | 4.66% |
| Jewell Junction city | 1,239 | 1,144 | -95 | -7.67% |
| Johnston city | 8,649 | 15,691 | 7,042 | 81.42% |
| Joice city | 231 | 230 | -1 | -0.43% |
| Jolley city | 54 | 31 | -23 | -42.59% |
| Kalona city | 2,293 | 2,516 | 223 | 9.73% |
| Kamrar city | 229 | 211 | -18 | -7.86% |
| Kanawha city | 739 | 657 | -82 | -11.10% |
| Kellerton city | 372 | 330 | -42 | -11.29% |
| Kelley city | 300 | 340 | 40 | 13.33% |
| Kellogg city | 606 | 601 | -5 | -0.83% |
| Kensett city | 280 | 267 | -13 | -4.64% |
| Keokuk city | 11,427 | 10,387 | -1,040 | -9.10% |
| Keomah Village city | 97 | 94 | -3 | -3.09% |
| Keosauqua city | 1,066 | 1,070 | 4 | 0.38% |
| Keota city | 1,025 | 890 | -135 | -13.17% |
| Keswick city | 295 | 283 | -12 | -4.07% |
| Keystone city | 687 | 668 | -19 | -2.77% |
| Kimballton city | 342 | 296 | -46 | -13.45% |
| Kingsley city | 1,245 | 1,241 | -4 | -0.32% |
| Kinross city | 80 | 76 | -4 | -5.00% |
| Kirkman city | 76 | 71 | -5 | -6.58% |
| Kirkville city | 214 | 212 | -2 | -0.93% |
| Kiron city | 273 | 255 | -18 | -6.59% |
| Klemme city | 593 | 531 | -62 | -10.46% |
| Knierim city | 70 | 51 | -19 | -27.14% |
| Knoxville city | 7,731 | 7,254 | -477 | -6.17% |
| La Motte city | 272 | 271 | -1 | -0.37% |
| La Porte City city | 2,275 | 2,238 | -37 | -1.63% |
| Lacona city | 360 | 349 | -11 | -3.06% |
| Ladora city | 287 | 286 | -1 | -0.35% |
| Lake City city | 1,787 | 1,618 | -169 | -9.46% |
| Lake Mills city | 2,140 | 1,977 | -163 | -7.62% |
| Lake Park city | 1,023 | 973 | -50 | -4.89% |
| Lake View city | 1,278 | 1,196 | -82 | -6.42% |
| Lakeside city | 484 | 509 | 25 | 5.17% |
| Lakota city | 255 | 240 | -15 | -5.88% |
| Lambs Grove city | 225 | 208 | -17 | -7.56% |
| Lamoni city | 2,444 | 2,450 | 6 | 0.25% |
| Lamont city | 503 | 485 | -18 | -3.58% |
| Lanesboro city | 152 | 129 | -23 | -15.13% |
| Lansing city | 1,012 | 959 | -53 | -5.24% |
| Larchwood city | 788 | 773 | -15 | -1.90% |
| Larrabee city | 149 | 127 | -22 | -14.77% |
| Latimer city | 535 | 537 | 2 | 0.37% |
| Laurel city | 266 | 266 | 0 | 0.00% |
| Laurens city | 1,476 | 1,260 | -216 | -14.63% |
| Lawler city | 461 | 418 | -43 | -9.33% |
| Lawton city | 697 | 768 | 71 | 10.19% |
| Le Claire city | 2,847 | 2,994 | 147 | 5.16% |
| Le Grand city | 883 | 975 | 92 | 10.42% |
| Le Mars city | 9,237 | 9,127 | -110 | -1.19% |
| Le Roy city | 13 | 8 | -5 | -38.46% |
| Ledyard city | 147 | 129 | -18 | -12.24% |
| Lehigh city | 497 | 451 | -46 | -9.26% |
| Leighton city | 153 | 168 | 15 | 9.80% |
| Leland city | 258 | 258 | 0 | 0.00% |
| Lenox city | 1,401 | 1,244 | -157 | -11.21% |
| Leon city | 1,983 | 1,884 | -99 | -4.99% |
| Lester city | 251 | 239 | -12 | -4.78% |
| Letts city | 392 | 381 | -11 | -2.81% |
| Lewis city | 438 | 401 | -37 | -8.45% |
| Libertyville city | 325 | 296 | -29 | -8.92% |
| Lidderdale city | 186 | 175 | -11 | -5.91% |
| Lime Springs city | 496 | 474 | -22 | -4.44% |
| Lincoln city | 182 | 156 | -26 | -14.29% |
| Linden city | 226 | 275 | 49 | 21.68% |
| Lineville city | 273 | 225 | -48 | -17.58% |
| Linn Grove city | 211 | 211 | 0 | 0.00% |
| Lisbon city | 1,898 | 2,029 | 131 | 6.90% |
| Liscomb city | 272 | 271 | -1 | -0.37% |
| Little Rock city | 489 | 451 | -38 | -7.77% |
| Little Sioux city | 217 | 196 | -21 | -9.68% |
| Livermore city | 431 | 361 | -70 | -16.24% |
| Lockridge city | 275 | 259 | -16 | -5.82% |
| Logan city | 1,545 | 1,411 | -134 | -8.67% |
| Lohrville city | 431 | 350 | -81 | -18.79% |
| Lone Rock city | 157 | 146 | -11 | -7.01% |
| Lone Tree city | 1,151 | 1,184 | 33 | 2.87% |
| Long Grove city | 597 | 758 | 161 | 26.97% |
| Lorimor city | 427 | 399 | -28 | -6.56% |
| Lost Nation city | 497 | 461 | -36 | -7.24% |
| Lovilia city | 583 | 528 | -55 | -9.43% |
| Low Moor city | 240 | 222 | -18 | -7.50% |
| Lowden city | 794 | 804 | 10 | 1.26% |
| Lu Verne city | 299 | 234 | -65 | -21.74% |
| Luana city | 249 | 240 | -9 | -3.61% |
| Lucas city | 243 | 245 | 2 | 0.82% |
| Luther city | 158 | 146 | -12 | -7.59% |
| Luxemburg city | 246 | 240 | -6 | -2.44% |
| Luzerne city | 105 | 99 | -6 | -5.71% |
| Lynnville city | 366 | 373 | 7 | 1.91% |
| Lytton city | 305 | 261 | -44 | -14.43% |
| Macedonia city | 325 | 311 | -14 | -4.31% |
| Macksburg city | 142 | 129 | -13 | -9.15% |
| Madrid city | 2,264 | 2,391 | 127 | 5.61% |
| Magnolia city | 200 | 187 | -13 | -6.50% |
| Malcom city | 352 | 300 | -52 | -14.77% |
| Mallard city | 298 | 267 | -31 | -10.40% |
| Maloy city | 28 | 21 | -7 | -25.00% |
| Malvern city | 1,256 | 1,323 | 67 | 5.33% |
| Manchester city | 5,257 | 4,876 | -381 | -7.25% |
| Manilla city | 839 | 808 | -31 | -3.69% |
| Manly city | 1,342 | 1,338 | -4 | -0.30% |
| Manning city | 1,490 | 1,490 | 0 | 0.00% |
| Manson city | 1,893 | 1,657 | -236 | -12.47% |
| Mapleton city | 1,416 | 1,149 | -267 | -18.86% |
| Maquoketa city | 6,112 | 5,908 | -204 | -3.34% |
| Marathon city | 302 | 293 | -9 | -2.98% |
| Marble Rock city | 326 | 326 | 0 | 0.00% |
| Marcus city | 1,139 | 1,037 | -102 | -8.96% |
| Marengo city | 2,535 | 2,522 | -13 | -0.51% |
| Marion city | 26,294 | 32,821 | 6,527 | 24.82% |
| Marne city | 149 | 141 | -8 | -5.37% |
| Marquette city | 421 | 438 | 17 | 4.04% |
| Marshalltown city | 26,009 | 25,850 | -159 | -0.61% |
| Martelle city | 280 | 256 | -24 | -8.57% |
| Martensdale city | 467 | 460 | -7 | -1.50% |
| Martinsburg city | 126 | 117 | -9 | -7.14% |
| Marysville city | 54 | 51 | -3 | -5.56% |
| Mason City city | 29,172 | 27,337 | -1,835 | -6.29% |
| Masonville city | 104 | 101 | -3 | -2.88% |
| Massena city | 414 | 397 | -17 | -4.11% |
| Matlock city | 83 | 82 | -1 | -1.20% |
| Maurice city | 254 | 261 | 7 | 2.76% |
| Maxwell city | 807 | 840 | 33 | 4.09% |
| Maynard city | 500 | 456 | -44 | -8.80% |
| Maysville city | 163 | 163 | 0 | 0.00% |
| McCallsburg city | 318 | 336 | 18 | 5.66% |
| McCausland city | 299 | 300 | 1 | 0.33% |
| McClelland city | 129 | 124 | -5 | -3.88% |
| McGregor city | 871 | 831 | -40 | -4.59% |
| McIntire city | 173 | 140 | -33 | -19.08% |
| Mechanicsville city | 1,173 | 1,109 | -64 | -5.46% |
| Mediapolis city | 1,644 | 1,584 | -60 | -3.65% |
| Melbourne city | 794 | 808 | 14 | 1.76% |
| Melcher-Dallas city | 1,298 | 1,237 | -61 | -4.70% |
| Melrose city | 130 | 119 | -11 | -8.46% |
| Melvin city | 243 | 231 | -12 | -4.94% |
| Menlo city | 365 | 351 | -14 | -3.84% |
| Meriden city | 184 | 168 | -16 | -8.70% |
| Merrill city | 754 | 739 | -15 | -1.99% |
| Meservey city | 252 | 223 | -29 | -11.51% |
| Middletown city | 535 | 540 | 5 | 0.93% |
| Miles city | 462 | 441 | -21 | -4.55% |
| Milford city | 2,474 | 2,472 | -2 | -0.08% |
| Millersburg city | 184 | 187 | 3 | 1.63% |
| Millerton city | 48 | 41 | -7 | -14.58% |
| Millville city | 23 | 21 | -2 | -8.70% |
| Milo city | 839 | 821 | -18 | -2.15% |
| Milton city | 550 | 494 | -56 | -10.18% |
| Minburn city | 391 | 469 | 78 | 19.95% |
| Minden city | 564 | 553 | -11 | -1.95% |
| Mingo city | 269 | 263 | -6 | -2.23% |
| Missouri Valley city | 2,992 | 2,751 | -241 | -8.05% |
| Mitchell city | 155 | 147 | -8 | -5.16% |
| Mitchellville city | 1,715 | 2,152 | 437 | 25.48% |
| Modale city | 303 | 281 | -22 | -7.26% |
| Mondamin city | 423 | 388 | -35 | -8.27% |
| Monmouth city | 180 | 176 | -4 | -2.22% |
| Monona city | 1,550 | 1,424 | -126 | -8.13% |
| Monroe city | 1,808 | 1,826 | 18 | 1.00% |
| Montezuma city | 1,440 | 1,362 | -78 | -5.42% |
| Monticello city | 3,607 | 3,653 | 46 | 1.28% |
| Montour city | 285 | 277 | -8 | -2.81% |
| Montrose city | 957 | 918 | -39 | -4.08% |
| Moorhead city | 232 | 196 | -36 | -15.52% |
| Moorland city | 197 | 182 | -15 | -7.61% |
| Moravia city | 713 | 684 | -29 | -4.07% |
| Morley city | 88 | 91 | 3 | 3.41% |
| Morning Sun city | 872 | 843 | -29 | -3.33% |
| Morrison city | 97 | 86 | -11 | -11.34% |
| Moulton city | 658 | 597 | -61 | -9.27% |
| Mount Auburn city | 160 | 161 | 1 | 0.63% |
| Mount Ayr city | 1,822 | 1,711 | -111 | -6.09% |
| Mount Pleasant city | 8,751 | 8,775 | 24 | 0.27% |
| Mount Sterling city | 40 | 37 | -3 | -7.50% |
| Mount Union city | 132 | 125 | -7 | -5.30% |
| Mount Vernon city | 3,390 | 4,158 | 768 | 22.65% |
| Moville city | 1,583 | 1,473 | -110 | -6.95% |
| Murray city | 766 | 796 | 30 | 3.92% |
| Muscatine city | 22,697 | 22,504 | -193 | -0.85% |
| Mystic city | 588 | 579 | -9 | -1.53% |
| Nashua city | 1,618 | 1,517 | -101 | -6.24% |
| Nemaha city | 102 | 89 | -13 | -12.75% |
| Neola city | 845 | 837 | -8 | -0.95% |
| Nevada city | 6,658 | 6,688 | 30 | 0.45% |
| New Albin city | 527 | 510 | -17 | -3.23% |
| New Hampton city | 3,692 | 3,400 | -292 | -7.91% |
| New Hartford city | 659 | 613 | -46 | -6.98% |
| New Liberty city | 121 | 134 | 13 | 10.74% |
| New London city | 1,937 | 1,841 | -96 | -4.96% |
| New Market city | 456 | 394 | -62 | -13.60% |
| New Providence city | 227 | 213 | -14 | -6.17% |
| New Sharon city | 1,301 | 1,299 | -2 | -0.15% |
| New Vienna city | 400 | 402 | 2 | 0.50% |
| New Virginia city | 469 | 487 | 18 | 3.84% |
| Newell city | 887 | 869 | -18 | -2.03% |
| Newhall city | 886 | 951 | 65 | 7.34% |
| Newton city | 15,579 | 15,042 | -537 | -3.45% |
| Nichols city | 374 | 357 | -17 | -4.55% |
| Nodaway city | 132 | 121 | -11 | -8.33% |
| Nora Springs city | 1,532 | 1,445 | -87 | -5.68% |
| North Buena Vista city | 124 | 94 | -30 | -24.19% |
| North English city | 991 | 989 | -2 | -0.20% |
| North Liberty city | 5,367 | 11,561 | 6,194 | 115.41% |
| North Washington city | 118 | 103 | -15 | -12.71% |
| Northboro city | 60 | 55 | -5 | -8.33% |
| Northwood city | 2,050 | 2,012 | -38 | -1.85% |
| Norwalk city | 6,884 | 8,821 | 1,937 | 28.14% |
| Norway city | 601 | 597 | -4 | -0.67% |
| Numa city | 109 | 106 | -3 | -2.75% |
| Oakland Acres city | 166 | 161 | -5 | -3.01% |
| Oakland city | 1,487 | 1,417 | -70 | -4.71% |
| Oakville city | 439 | 413 | -26 | -5.92% |
| Ocheyedan city | 536 | 488 | -48 | -8.96% |
| Odebolt city | 1,153 | 1,005 | -148 | -12.84% |
| Oelwein city | 6,692 | 6,082 | -610 | -9.12% |
| Ogden city | 2,023 | 1,974 | -49 | -2.42% |
| Okoboji city | 820 | 861 | 41 | 5.00% |
| Olds city | 249 | 238 | -11 | -4.42% |
| Olin city | 716 | 703 | -13 | -1.82% |
| Ollie city | 224 | 162 | -62 | -27.68% |
| Onawa city | 3,091 | 2,746 | -345 | -11.16% |
| Onslow city | 223 | 213 | -10 | -4.48% |
| Orange City city | 5,582 | 5,891 | 309 | 5.54% |
| Orchard city | 88 | 86 | -2 | -2.27% |
| Orient city | 402 | 373 | -29 | -7.21% |
| Orleans city | 583 | 602 | 19 | 3.26% |
| Osage city | 3,451 | 3,427 | -24 | -0.70% |
| Osceola city | 4,659 | 4,714 | 55 | 1.18% |
| Oskaloosa city | 10,938 | 11,069 | 131 | 1.20% |
| Ossian city | 853 | 811 | -42 | -4.92% |
| Osterdock city | 50 | 49 | -1 | -2.00% |
| Otho city | 571 | 535 | -36 | -6.30% |
| Oto city | 145 | 144 | -1 | -0.69% |
| Ottosen city | 61 | 45 | -16 | -26.23% |
| Ottumwa city | 24,998 | 24,342 | -656 | -2.62% |
| Owasa city | 38 | 36 | -2 | -5.26% |
| Oxford city | 705 | 693 | -12 | -1.70% |
| Oxford Junction city | 573 | 544 | -29 | -5.06% |
| Oyens city | 132 | 119 | -13 | -9.85% |
| Pacific Junction city | 507 | 510 | 3 | 0.59% |
| Packwood city | 223 | 212 | -11 | -4.93% |
| Palmer city | 214 | 175 | -39 | -18.22% |
| Palo city | 614 | 875 | 261 | 42.51% |
| Panama city | 212 | 187 | -25 | -11.79% |
| Panora city | 1,175 | 1,161 | -14 | -1.19% |
| Panorama Park city | 111 | 128 | 17 | 15.32% |
| Parkersburg city | 1,889 | 1,861 | -28 | -1.48% |
| Parnell city | 220 | 214 | -6 | -2.73% |
| Paton city | 265 | 240 | -25 | -9.43% |
| Patterson city | 126 | 132 | 6 | 4.76% |
| Paullina city | 1,124 | 989 | -135 | -12.01% |
| Pella city | 9,832 | 10,208 | 376 | 3.82% |
| Peosta city | 651 | 1,187 | 536 | 82.33% |
| Perry city | 7,633 | 9,569 | 1,936 | 25.36% |
| Persia city | 363 | 329 | -34 | -9.37% |
| Peterson city | 372 | 342 | -30 | -8.06% |
| Pierson city | 371 | 348 | -23 | -6.20% |
| Pilot Mound city | 214 | 200 | -14 | -6.54% |
| Pioneer city | 21 | 19 | -2 | -9.52% |
| Pisgah city | 316 | 298 | -18 | -5.70% |
| Plainfield city | 438 | 427 | -11 | -2.51% |
| Plano city | 58 | 56 | -2 | -3.45% |
| Pleasant Hill city | 5,070 | 8,414 | 3,344 | 65.96% |
| Pleasant Plain city | 131 | 124 | -7 | -5.34% |
| Pleasanton city | 37 | 28 | -9 | -24.32% |
| Pleasantville city | 1,539 | 1,580 | 41 | 2.66% |
| Plover city | 95 | 84 | -11 | -11.58% |
| Plymouth city | 429 | 413 | -16 | -3.73% |
| Pocahontas city | 1,970 | 1,799 | -171 | -8.68% |
| Polk City city | 2,344 | 3,201 | 857 | 36.56% |
| Pomeroy city | 710 | 613 | -97 | -13.66% |
| Popejoy city | 78 | 78 | 0 | 0.00% |
| Portsmouth city | 225 | 200 | -25 | -11.11% |
| Postville city | 2,273 | 2,306 | 33 | 1.45% |
| Prairie City city | 1,365 | 1,436 | 71 | 5.20% |
| Prairieburg city | 175 | 170 | -5 | -2.86% |
| Prescott city | 266 | 245 | -21 | -7.89% |
| Preston city | 949 | 920 | -29 | -3.06% |
| Primghar city | 891 | 809 | -82 | -9.20% |
| Princeton city | 946 | 953 | 7 | 0.74% |
| Promise City city | 105 | 100 | -5 | -4.76% |
| Protivin city | 317 | 304 | -13 | -4.10% |
| Pulaski city | 249 | 268 | 19 | 7.63% |
| Quasqueton city | 574 | 546 | -28 | -4.88% |
| Quimby city | 368 | 329 | -39 | -10.60% |
| Radcliffe city | 607 | 563 | -44 | -7.25% |
| Rake city | 227 | 207 | -20 | -8.81% |
| Ralston city | 98 | 79 | -19 | -19.39% |
| Randalia city | 84 | 69 | -15 | -17.86% |
| Randall city | 148 | 142 | -6 | -4.05% |
| Randolph city | 209 | 168 | -41 | -19.62% |
| Rathbun city | 88 | 84 | -4 | -4.55% |
| Raymond city | 537 | 686 | 149 | 27.75% |
| Readlyn city | 786 | 762 | -24 | -3.05% |
| Reasnor city | 194 | 188 | -6 | -3.09% |
| Red Oak city | 6,197 | 5,683 | -514 | -8.29% |
| Redding city | 78 | 69 | -9 | -11.54% |
| Redfield city | 833 | 1,041 | 208 | 24.97% |
| Reinbeck city | 1,751 | 1,652 | -99 | -5.65% |
| Rembrandt city | 228 | 223 | -5 | -2.19% |
| Remsen city | 1,762 | 1,654 | -108 | -6.13% |
| Renwick city | 306 | 262 | -44 | -14.38% |
| Rhodes city | 294 | 299 | 5 | 1.70% |
| Riceville city | 840 | 806 | -34 | -4.05% |
| Richland city | 587 | 563 | -24 | -4.09% |
| Rickardsville city | 191 | 181 | -10 | -5.24% |
| Ricketts city | 144 | 134 | -10 | -6.94% |
| Ridgeway city | 293 | 284 | -9 | -3.07% |
| Rinard city | 72 | 62 | -10 | -13.89% |
| Ringsted city | 436 | 418 | -18 | -4.13% |
| Rippey city | 319 | 276 | -43 | -13.48% |
| Riverdale city | 656 | 595 | -61 | -9.30% |
| Riverside city | 928 | 982 | 54 | 5.82% |
| Riverton city | 304 | 275 | -29 | -9.54% |
| Robins city | 1,806 | 2,869 | 1,063 | 58.86% |
| Rock Falls city | 170 | 154 | -16 | -9.41% |
| Rock Rapids city | 2,573 | 2,437 | -136 | -5.29% |
| Rock Valley city | 2,702 | 2,945 | 243 | 8.99% |
| Rockford city | 907 | 888 | -19 | -2.09% |
| Rockwell city | 989 | 992 | 3 | 0.30% |
| Rockwell City city | 2,264 | 1,988 | -276 | -12.19% |
| Rodman city | 56 | 51 | -5 | -8.93% |
| Rodney city | 74 | 58 | -16 | -21.62% |
| Roland city | 1,324 | 1,317 | -7 | -0.53% |
| Rolfe city | 675 | 581 | -94 | -13.93% |
| Rome city | 113 | 113 | 0 | 0.00% |
| Rose Hill city | 205 | 205 | 0 | 0.00% |
| Rossie city | 58 | 56 | -2 | -3.45% |
| Rowan city | 218 | 194 | -24 | -11.01% |
| Rowley city | 290 | 286 | -4 | -1.38% |
| Royal city | 479 | 424 | -55 | -11.48% |
| Rudd city | 431 | 399 | -32 | -7.42% |
| Runnells city | 352 | 392 | 40 | 11.36% |
| Russell city | 559 | 564 | 5 | 0.89% |
| Ruthven city | 711 | 687 | -24 | -3.38% |
| Rutland city | 145 | 123 | -22 | -15.17% |
| Ryan city | 410 | 369 | -41 | -10.00% |
| Sabula city | 670 | 649 | -21 | -3.13% |
| Sac City city | 2,368 | 2,140 | -228 | -9.63% |
| Sageville city | 203 | 191 | -12 | -5.91% |
| Salem city | 464 | 449 | -15 | -3.23% |
| Salix city | 370 | 383 | 13 | 3.51% |
| Sanborn city | 1,353 | 1,287 | -66 | -4.88% |
| Sandyville city | 61 | 60 | -1 | -1.64% |
| Scarville city | 97 | 89 | -8 | -8.25% |
| Schaller city | 779 | 701 | -78 | -10.01% |
| Schleswig city | 833 | 816 | -17 | -2.04% |
| Scranton city | 604 | 522 | -82 | -13.58% |
| Searsboro city | 155 | 151 | -4 | -2.58% |
| Sergeant Bluff city | 3,321 | 4,011 | 690 | 20.78% |
| Seymour city | 810 | 738 | -72 | -8.89% |
| Shambaugh city | 188 | 171 | -17 | -9.04% |
| Shannon City city | 70 | 73 | 3 | 4.29% |
| Sharpsburg city | 98 | 90 | -8 | -8.16% |
| Sheffield city | 930 | 990 | 60 | 6.45% |
| Shelby city | 696 | 644 | -52 | -7.47% |
| Sheldahl city | 336 | 319 | -17 | -5.06% |
| Sheldon city | 4,914 | 4,757 | -157 | -3.19% |
| Shell Rock city | 1,298 | 1,235 | -63 | -4.85% |
| Shellsburg city | 938 | 1,004 | 66 | 7.04% |
| Shenandoah city | 5,546 | 4,944 | -602 | -10.85% |
| Sherrill city | 186 | 186 | 0 | 0.00% |
| Shueyville city | 250 | 525 | 275 | 110.00% |
| Sibley city | 2,796 | 2,612 | -184 | -6.58% |
| Sidney city | 1,300 | 1,175 | -125 | -9.62% |
| Sigourney city | 2,209 | 2,090 | -119 | -5.39% |
| Silver City city | 259 | 268 | 9 | 3.47% |
| Sioux Center city | 6,002 | 6,581 | 579 | 9.65% |
| Sioux City city | 85,013 | 82,807 | -2,206 | -2.59% |
| Sioux Rapids city | 720 | 706 | -14 | -1.94% |
| Slater city | 1,306 | 1,388 | 82 | 6.28% |
| Sloan city | 1,032 | 1,019 | -13 | -1.26% |
| Smithland city | 221 | 213 | -8 | -3.62% |
| Soldier city | 207 | 185 | -22 | -10.63% |
| Solon city | 1,177 | 1,668 | 491 | 41.72% |
| Somers city | 165 | 136 | -29 | -17.58% |
| South English city | 213 | 205 | -8 | -3.76% |
| Spencer city | 11,317 | 10,986 | -331 | -2.92% |
| Spillville city | 386 | 371 | -15 | -3.89% |
| Spirit Lake city | 4,261 | 4,692 | 431 | 10.11% |
| Spragueville city | 89 | 84 | -5 | -5.62% |
| Spring Hill city | 92 | 91 | -1 | -1.09% |
| Springbrook city | 182 | 184 | 2 | 1.10% |
| Springville city | 1,091 | 1,047 | -44 | -4.03% |
| St. Ansgar city | 1,031 | 1,056 | 25 | 2.42% |
| St. Anthony city | 109 | 187 | 78 | 71.56% |
| St. Charles city | 619 | 672 | 53 | 8.56% |
| St. Donatus city | 140 | 155 | 15 | 10.71% |
| St. Lucas city | 178 | 163 | -15 | -8.43% |
| St. Marys city | 134 | 127 | -7 | -5.22% |
| St. Olaf city | 136 | 120 | -16 | -11.76% |
| St. Paul city | 118 | 116 | -2 | -1.69% |
| Stacyville city | 469 | 449 | -20 | -4.26% |
| Stanhope city | 488 | 437 | -51 | -10.45% |
| Stanley city | 128 | 126 | -2 | -1.56% |
| Stanton city | 714 | 683 | -31 | -4.34% |
| Stanwood city | 680 | 643 | -37 | -5.44% |
| State Center city | 1,349 | 1,341 | -8 | -0.59% |
| Steamboat Rock city | 336 | 315 | -21 | -6.25% |
| Stockport city | 284 | 282 | -2 | -0.70% |
| Stockton city | 182 | 181 | -1 | -0.55% |
| Storm Lake city | 10,076 | 9,591 | -485 | -4.81% |
| Story City city | 3,228 | 3,389 | 161 | 4.99% |
| Stout city | 217 | 214 | -3 | -1.38% |
| Stratford city | 746 | 686 | -60 | -8.04% |
| Strawberry Point city | 1,386 | 1,247 | -139 | -10.03% |
| Struble city | 85 | 80 | -5 | -5.88% |
| Stuart city | 1,712 | 1,703 | -9 | -0.53% |
| Sully city | 904 | 856 | -48 | -5.31% |
| Sumner city | 2,106 | 1,984 | -122 | -5.79% |
| Superior city | 142 | 126 | -16 | -11.27% |
| Sutherland city | 707 | 632 | -75 | -10.61% |
| Swaledale city | 174 | 167 | -7 | -4.02% |
| Swan city | 121 | 84 | -37 | -30.58% |
| Swea City city | 642 | 569 | -73 | -11.37% |
| Swisher city | 813 | 851 | 38 | 4.67% |
| Tabor city | 993 | 928 | -65 | -6.55% |
| Tama city | 2,731 | 2,557 | -174 | -6.37% |
| Templeton city | 334 | 334 | 0 | 0.00% |
| Tennant city | 73 | 73 | 0 | 0.00% |
| Terril city | 404 | 364 | -40 | -9.90% |
| Thayer city | 66 | 54 | -12 | -18.18% |
| Thompson city | 596 | 546 | -50 | -8.39% |
| Thor city | 174 | 158 | -16 | -9.20% |
| Thornburg city | 84 | 65 | -19 | -22.62% |
| Thornton city | 422 | 358 | -64 | -15.17% |
| Thurman city | 236 | 209 | -27 | -11.44% |
| Tiffin city | 975 | 1,814 | 839 | 86.05% |
| Tingley city | 171 | 149 | -22 | -12.87% |
| Tipton city | 3,155 | 3,012 | -143 | -4.53% |
| Titonka city | 584 | 515 | -69 | -11.82% |
| Toledo city | 2,539 | 2,645 | 106 | 4.17% |
| Toronto city | 134 | 130 | -4 | -2.99% |
| Traer city | 1,594 | 1,568 | -26 | -1.63% |
| Treynor city | 950 | 898 | -52 | -5.47% |
| Tripoli city | 1,310 | 1,258 | -52 | -3.97% |
| Truesdale city | 91 | 87 | -4 | -4.40% |
| Truro city | 427 | 485 | 58 | 13.58% |
| Turin city | 75 | 67 | -8 | -10.67% |
| Udell city | 58 | 47 | -11 | -18.97% |
| Underwood city | 688 | 858 | 170 | 24.71% |
| Union city | 427 | 388 | -39 | -9.13% |
| Unionville city | 127 | 122 | -5 | -3.94% |
| University Heights city | 987 | 1,050 | 63 | 6.38% |
| University Park city | 536 | 542 | 6 | 1.12% |
| Urbana city | 1,019 | 1,447 | 428 | 42.00% |
| Urbandale city | 29,072 | 38,369 | 9,297 | 31.98% |
| Ute city | 378 | 324 | -54 | -14.29% |
| Vail city | 452 | 435 | -17 | -3.76% |
| Valeria city | 62 | 60 | -2 | -3.23% |
| Van Horne city | 716 | 722 | 6 | 0.84% |
| Van Meter city | 866 | 1,208 | 342 | 39.49% |
| Van Wert city | 231 | 214 | -17 | -7.36% |
| Varina city | 90 | 78 | -12 | -13.33% |
| Ventura city | 670 | 718 | 48 | 7.16% |
| Victor city | 952 | 983 | 31 | 3.26% |
| Villisca city | 1,344 | 1,233 | -111 | -8.26% |
| Vincent city | 158 | 151 | -7 | -4.43% |
| Vining city | 70 | 50 | -20 | -28.57% |
| Vinton city | 5,102 | 5,080 | -22 | -0.43% |
| Volga city | 247 | 222 | -25 | -10.12% |
| Wadena city | 243 | 218 | -25 | -10.29% |
| Wahpeton city | 462 | 438 | -24 | -5.19% |
| Walcott city | 1,528 | 1,628 | 100 | 6.54% |
| Walford city | 1,224 | 1,425 | 201 | 16.42% |
| Walker city | 750 | 775 | 25 | 3.33% |
| Wall Lake city | 841 | 747 | -94 | -11.18% |
| Wallingford city | 210 | 194 | -16 | -7.62% |
| Walnut city | 778 | 804 | 26 | 3.34% |
| Wapello city | 2,124 | 2,013 | -111 | -5.23% |
| Washington city | 7,047 | 7,254 | 207 | 2.94% |
| Washta city | 282 | 242 | -40 | -14.18% |
| Waterloo city | 68,747 | 66,662 | -2,085 | -3.03% |
| Waterville city | 145 | 133 | -12 | -8.28% |
| Waucoma city | 299 | 238 | -61 | -20.40% |
| Waukee city | 5,126 | 12,367 | 7,241 | 141.26% |
| Waukon city | 4,131 | 3,908 | -223 | -5.40% |
| Waverly city | 8,968 | 9,298 | 330 | 3.68% |
| Wayland city | 945 | 926 | -19 | -2.01% |
| Webb city | 165 | 151 | -14 | -8.48% |
| Webster city | 110 | 107 | -3 | -2.73% |
| Webster City city | 8,176 | 7,720 | -456 | -5.58% |
| Weldon city | 145 | 141 | -4 | -2.76% |
| Wellman city | 1,393 | 1,427 | 34 | 2.44% |
| Wellsburg city | 716 | 679 | -37 | -5.17% |
| Welton city | 159 | 158 | -1 | -0.63% |
| Wesley city | 467 | 414 | -53 | -11.35% |
| West Bend city | 834 | 794 | -40 | -4.80% |
| West Branch city | 2,188 | 2,296 | 108 | 4.94% |
| West Burlington city | 3,161 | 3,283 | 122 | 3.86% |
| West Chester city | 159 | 159 | 0 | 0.00% |
| West Des Moines city | 46,403 | 55,426 | 9,023 | 19.44% |
| West Liberty city | 3,332 | 3,650 | 318 | 9.54% |
| West Okoboji city | 432 | 409 | -23 | -5.32% |
| West Point city | 980 | 915 | -65 | -6.63% |
| West Union city | 2,549 | 2,429 | -120 | -4.71% |
| Westfield city | 189 | 178 | -11 | -5.82% |
| Westgate city | 234 | 216 | -18 | -7.69% |
| Westphalia city | 160 | 142 | -18 | -11.25% |
| Westside city | 327 | 322 | -5 | -1.53% |
| Westwood city | 127 | 242 | 115 | 90.55% |
| What Cheer city | 678 | 628 | -50 | -7.37% |
| Wheatland city | 772 | 745 | -27 | -3.50% |
| Whiting city | 707 | 703 | -4 | -0.57% |
| Whittemore city | 530 | 477 | -53 | -10.00% |
| Whitten city | 160 | 134 | -26 | -16.25% |
| Willey city | 103 | 99 | -4 | -3.88% |
| Williams city | 427 | 374 | -53 | -12.41% |
| Williamsburg city | 2,622 | 2,812 | 190 | 7.25% |
| Williamson city | 163 | 158 | -5 | -3.07% |
| Wilton city | 2,829 | 2,821 | -8 | -0.28% |
| Windsor Heights city | 4,805 | 4,643 | -162 | -3.37% |
| Winfield city | 1,131 | 1,082 | -49 | -4.33% |
| Winterset city | 4,768 | 4,820 | 52 | 1.09% |
| Winthrop city | 772 | 734 | -38 | -4.92% |
| Wiota city | 149 | 142 | -7 | -4.70% |
| Woden city | 243 | 219 | -24 | -9.88% |
| Woodbine city | 1,564 | 1,527 | -37 | -2.37% |
| Woodburn city | 244 | 236 | -8 | -3.28% |
| Woodward city | 1,200 | 1,429 | 229 | 19.08% |
| Woolstock city | 204 | 188 | -16 | -7.84% |
| Worthington city | 381 | 366 | -15 | -3.94% |
| Wyoming city | 626 | 592 | -34 | -5.43% |
| Yale city | 287 | 259 | -28 | -9.76% |
| Yetter city | 36 | 28 | -8 | -22.22% |
| Yorktown city | 82 | 76 | -6 | -7.32% |
| Zearing city | 617 | 589 | -28 | -4.54% |
| Zwingle city | 100 | 109 | 9 | 9.00% |
Source: Population Division, U.S. Census Bureau