Union County, Iowa
6 ZIP codes · 423.65 sq mi of land · FIPS 19175
| Population | 11,993 |
|---|---|
| State | Iowa |
| FIPS code | 19175 |
| Time zone | Central |
| Land area | 423.65 sq mi |
| Center (lat, long) | 41.0286, -94.2451 |
Area codes in this area
These are the area codes that most often serve Union County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
ThayerCrestonAftonArispeCromwellShannon City
ZIP codes in Union County
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.