Benton County IA Information


Benton County Subdivisions

Benton County IA Data & Demographics (As of July 1, 2020)


Total Population 26,416 (100%)
Population in Households 26,103 (98.8%)
Population in Families 21,839 (82.7%)
Population in Group Quarters1 313 ( 1.2%)
Population Density 37
Diversity Index2 9


Median Household Income $62,424
Average Household Income $78,079
% of Income for Mortgage4 12%
Per Capita Income $31,206
Wealth Index5 84


Total HU (Housing Units) 11,446 (100%)
Owner Occupied HU 8,805 (76.9%)
Renter Occupied HU 1,748 (15.3%)
Vacant Housing Units 893 ( 7.8%)
Median Home Value $174,872
Average Home Value $201,865
Housing Affordability Index3 181


Total Households 10,553
Average Household Size 2.47
Family Households 7,441
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2020 2020-2025
Population 0.13% -0.09%
Households 0.24% -0.02%
Families 0.09% -0.11%
Median Household Income   1.19%
Per Capita Income   1.77%
Owner Occupied HU   0.04%


Benton County IA - Peer Comparisons by Rank and Percentile

The table below compares Benton County to the other 99 counties and county equivalents in Iowa by rank and percentile using July 1, 2020 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 24 77th
Population Density # 32 69th
Median Household Income # 13 88th
Housing Affordability Index # 17 17th
Per Capita Income # 26 75th
Diversity Index # 91 9th

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