Johnson County, Iowa
13 ZIP codes · 613 sq mi of land · FIPS 19103
| Population | 156,639 |
|---|---|
| State | Iowa |
| FIPS code | 19103 |
| Time zone | Central |
| Land area | 613 sq mi |
| Center (lat, long) | 41.6707, -91.5905 |
Area codes in this area
These are the area codes that most often serve Johnson 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)
Iowa City · 75,752Coralville · 23,234North Liberty · 21,125HillsKalonaOxfordSolonSwisherTiffinLone Tree
ZIP codes in Johnson County
52235 Hills52240 Iowa City52241 Coralville52242 Iowa City52245 Iowa City52246 Iowa City52247 Kalona52317 North Liberty52322 Oxford52333 Solon52338 Swisher52340 Tiffin52755 Lone Tree
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.