ZIP Code 50057 - Columbia Iowa
Overview
ZIP Code 50057 is located in Columbia Iowa. Portions of 50057 are also in Washington Township (Marion County) and Indiana Township and Dallas Township (Marion County). 50057 is entirely within Marion County. Regionally, 50057 is located in the Des Moines-Ames Area.
ZIP Code 50057 Quick Stats
| ZIP Code Name | Columbia |
| Primary County | Marion County |
| ZIP Code Type | Standard |
| Population (2022) | 244 |
| Area Code(s) | 641 |
| Current Time | CDT |
ZIP Code 50057 Map
50057 Demographics
The majority race/ethnicity residing in 50057 is White. The current unemployment level in 50057 is 3.3%.
| Population | 244 |
| Population Growth Rate | -6.91% |
| Population Density | 12 People per Square Mile |
| Total Households | 74 |
| Current Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 7% |
| Majority Race/Ethnicity | White - 100% |
50057 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 283 | 100% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
50057 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 0 | 0% |
| Bachelor Degree | 37 | 30.33% |
| High School Diploma | 58 | 47.54% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 0 | 0% |
| 1 or More Years of College | 7 | 5.74% |
| Associates Degree | 7 | 5.74% |
| Masters Degree | 13 | 10.66% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
50057 Geography
| Coordinates | 41.17921829, -93.15393066 |
| Adjacent ZIP Codes | |
| Cities/Towns in 50057 | |
| Region | Des Moines-Ames Area |
| Metropolitan/Micropolitan Stat Area | Pella, IA |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 20 Square Miles |
50057 Weather and Climate Data
| Plant Hardiness Zone | Zone 5b: -15F to -10F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 40a - Loess Flats and Till Plains | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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