US > Iowa > Poweshiek County > Grinnell, IA 50112

50112 ZIP Code Profile, Map, Data & Demographics

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Grinnell, IA
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ZIP Code 50112: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Grinnell, IA 50112

Acceptable Alternative
Oakland Acres, IA 50112

Not Acceptable, USPS
Newburg, IA 50112

  • ZIP Code Type: STANDARD
  • County: Poweshiek County
  • Centroid: Latitude 41.767, Longitude -92.765
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 50112 has segments in 2 Counties (Jasper, Poweshiek).

  • Businesses Addresses: 414
  • PO Box Addresses: 90
  • Residential Addresses: 4,778
    • Multi-Family Addresses: 591
    • Single Family Addresses: 4,187

The ZIP Code maps and database are updated 4 times per year.
Database updated: June 1, 2025, Maps updated: May 1, 2024.

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Grinnell, IA 50112 Data & Demographics (As of July 1, 2025)

POPULATION

Total Population 11,643 (100%)
Population in Households 10,118 (86.9%)
Population in Families 7,769 (66.7%)
Population in Group Quarters1 1,525 (13.1%)
Population Density 64
Diversity Index2 27
 
 

INCOME

Median Household Income $68,996
Average Household Income $100,629
% of Income for Mortgage4 20%
Per Capita Income $40,325
Wealth Index5 88
Socioeconomic Status Index6 Moderate (56.1)
 

HOUSING

Total HU (Housing Units) 5,090 (100%)
Owner Occupied HU 3,108 (61.1%)
Renter Occupied HU 1,540 (30.3%)
Vacant Housing Units 442 ( 8.7%)
Median Home Value $216,307
Average Home Value $256,573
Housing Affordability Index3 111
 

HOUSEHOLDS

Total Households 4,648
Average Household Size 2.18
Family Households 2,601
Average Family Size 3.00
NOTES
  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.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

 2020-2025 2025-2030
Population -0.34% 0.00%
Households 0.14% 0.16%
Families   -0.12%
Median Household Income   1.66%
Per Capita Income   1.65%
Owner Occupied HU   0.36%

Grinnell, IA 50112 - Peer Comparisons by Rank and Percentile

The table below compares 50112 to the other 964 ZIP Codes in Iowa by rank and percentile using July 1, 2025 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 # 74 92nd
Population Density # 246 75th
Median Household Income # 674 30th
Housing Affordability Index # 350 36th
Per Capita Income # 445 54th
Diversity Index # 197 80th

Additional comparisons and rankings can be made with a VERY EASY TO USE Iowa Census Data Comparison Tool.


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