ZIP Code 50112 - Grinnell Iowa
Overview
ZIP Code 50112 is located in Grinnell Iowa. Portions of 50112 are also in Oakland Acres and Washington Township (Poweshiek County) and Chester Township (Poweshiek County) and Grant Township (Poweshiek County) and Rock Creek Township and Sheridan Township (Poweshiek County) and Hickory Grove Township (Jasper County) and Richland Township (Jasper County) and Malcom Township and Pleasant Township (Poweshiek County) and Lynn Grove Township. 50112 is primarily within Poweshiek County, with some portions in Jasper County. Regionally, 50112 is located in the Des Moines-Ames Area.
ZIP Code 50112 Quick Stats
| ZIP Code Name | Grinnell |
| Primary County | Poweshiek County |
| ZIP Code Type | Standard |
| Population (2022) | 11,827 |
| Area Code(s) | 641 |
| Current Time | CDT |
ZIP Code 50112 Map
50112 Demographics
50112 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Iowa based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 50112 is White. The majority race/ethnicity attending public schools in 50112 is White. The current unemployment level in 50112 is 3.3%.
| Population | 11,827 |
| Population Growth Rate | 0% |
| Population Density | 65 People per Square Mile |
| Total Households | 4,569 |
| Percentage High Income Households | 1.4% |
| Median Household Income (2021) | $56,302 |
| Average Adjusted Gross Income (2021) | $495,230 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 92.17% |
| Public School Majority Race/Ethnicity | White - 88.05% |
50112 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 10,841 | 92.17% |
| Black | 216 | 1.84% |
| Hispanic | 297 | 2.53% |
| Asian | 408 | 3.47% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
50112 Public School Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 1,400 | 92.47% |
| Black | 30 | 1.98% |
| Hispanic | 61 | 4.03% |
| Asian | 9 | 0.59% |
| Native American | 11 | 0.73% |
| Hawaiian/Pac. Islander | 3 | 0.2% |
50112 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 459 | 6.8% |
| Bachelor Degree | 1,043 | 15.46% |
| High School Diploma | 2,326 | 34.48% |
| No High School Diploma | 101 | 1.5% |
| GED or Alternate | 319 | 4.73% |
| 1 or More Years of College | 1,066 | 15.8% |
| Associates Degree | 729 | 10.81% |
| Masters Degree | 325 | 4.82% |
| Professional Degree | 151 | 2.24% |
| Doctorate Degree | 227 | 3.36% |
50112 Geography
| Coordinates | 41.73644257, -92.71416473 |
| Adjacent ZIP Codes | |
| Cities/Towns in 50112 | Oakland AcresWashington Township (Poweshiek County)Chester Township (Poweshiek County)Grant Township (Poweshiek County)Rock Creek TownshipSheridan Township (Poweshiek County)Hickory Grove Township (Jasper County)Richland Township (Jasper County)Malcom TownshipPleasant Township (Poweshiek County)Lynn Grove Township |
| Region | Des Moines-Ames Area |
| Metropolitan/Micropolitan Stat Area | Des Moines-West Des Moines, IA |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 183 Square Miles |
50112 Weather and Climate Data
| Plant Hardiness Zone | Zone 5a: -20F to -15F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 47f - Rolling Loess Prairies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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