Zip Code Database List
Account Login
Find ZIP+4 of Address

Find the ZIP Code, County, and +4 of any U.S. Address

FREE ZIP Code Finder

Find info on any U.S. ZIP Code

Other FREE Lookups

Lookup ZIP Code of any City, State, County or Area Code

FREE Radius Search

Find all ZIP Codes

FREE Distance Calc

Calculate the distance between two U.S. or Canadian ZIP codes.

ZIP Code Database - Facts & Stats

Data Last Updated: December 1, 2022

ZIP Codes for City of Union, IA

Union, IA Covers 1 ZIP Code

ZIP CodeTypeCountyPopulation
ZIP Code 50258StandardHardin1,002

Timezone(s):Central (GMT -06:00)
Counties:HARDIN, IA
Population:397 (More Details)
Male Population:195
Female Population:202
Median Age:44
ZIP Codes:1
Area Codes:1
Total Area:570 square miles (county)
Land Area:569 square miles (county)
Water Area:1 square miles (county)

Union, IA Demographic Information *

Total population397
Male population195
Female population202
Median age (years)43.9
White Population381
Black Population2
Indian Population1
Asian Population1
Hawaiian Population0
Hispanic Population12
Median age (Male)45.1
Median age (Female)43.3
Total households172
Family households (families)105
Average household size2.31
Average family size2.94
Total housing units200
* Demographic data is based on 2010 Census. Products


  1. U.S. Postal Service [Last Updated: 12/1/2022],
  2. Internal Data Creation [Last Updated: 12/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],