ZIP Code 50258 - Union Iowa

Overview

ZIP Code 50258 is located in Union Iowa. Portions of 50258 are also in Union Township (Hardin County) and Bangor Township and Providence Township (Hardin County) and Gifford. 50258 is primarily within Hardin County, with some portions in Marshall County. Regionally, 50258 is located in the Des Moines-Ames Area.

Stats Demographics Geography Politics Climate Related Pages

ZIP Code 50258 Quick Stats

ZIP Code NameUnion
Primary CountyHardin County
ZIP Code TypeStandard
Population (2022)831
Area Code(s)641
Current Time
CDT

ZIP Code 50258 Map

50258 Demographics

50258 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 50258 is White. The majority race/ethnicity attending public schools in 50258 is White. The current unemployment level in 50258 is 3.3%.

Population831
Population Growth Rate-11.80%
Population Density17 People per Square Mile
Total Households416
Percentage High Income Households2.9%
Median Household Income (2021)$72,622
Average Adjusted Gross Income (2021)$155,530
Current Unemployment Rate (May 2026)3.3%
Sales Tax Rate (2025)7.0%
Majority Race/EthnictyWhite - 99.68%
Public School Majority Race/EthnictyWhite - 95.56%

50258 Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White94099.68%
Black00%
Hispanic20.21%
Asian10.11%
Native American00%
Hawaiian/Pac. Islander00%

50258 Public School Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White17297.18%
Black00%
Hispanic31.69%
Asian10.56%
Native American00%
Hawaiian/Pac. Islander10.56%

50258 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College8011.32%
Bachelor Degree7510.61%
High School Diploma29742.01%
No High School Diploma30.42%
GED or Alternate405.66%
1 or More Years of College9112.87%
Associates Degree8712.31%
Masters Degree243.39%
Professional Degree70.99%
Doctorate Degree30.42%

50258 Geography

Coordinates42.22297668,-93.07415771
Adjacent ZIP Codes
Cities/Towns in 50258
RegionDes Moines-Ames Area
Metropolitan/Micropolitan Stat AreaMarshalltown, IA
Time ZoneCentral Daylight Time
IANA TimezoneAmerica/Chicago
Area49 Square Miles

50258 Weather and Climate Data

Plant Hardiness ZoneZone 5a: -20F to -15F
Average First Frost DateOctober 1 - 10
Average Last Frost DateApril 21 - 31
Koppen-Geiger Climate ZoneDfa - Humid Continental Hot Summers
Ecoregion47f - Rolling Loess Prairies

50258 Annual Climate Data

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)7132536485862605039251336
Avg Max Temp (°F)26324459718184827562443057
Avg Precip (In.).94.982.093.274.355.264.254.383.152.612.121.1734.56

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