Cities and Towns in Johnson County, Iowa
Founded on Dec 21, 1837, Johnson County is one of 99 counties in the state of Iowa. Historically, Johnson County was formed from Des Moines County, Iowa and Wisconsin Territory. The city of Iowa City is the county seat. With FIPS code of 103, Johnson County has a population of 154,748 and area of 614 square miles (1,590 km²).
List of all cities in Johnson County, IA alphabetically
| City/Town | Postal Code | Area Code |
| American College Testing, IA | 52243 | 319 |
| Coralville, IA | 52241 | 319 |
| Cosgrove, IA | 52322 | 319 |
| Cou Falls, IA | 52338 | 319 |
| Hills, IA | 52235 | 319 |
| Iowa City, IA | 52240 | 319 |
| 52241 | 319 | |
| 52242 | 319 | |
| 52243 | 319 | |
| 52244 | 319 | |
| 52245 | 319 | |
| 52246 | 319 | |
| Lone Tree, IA | 52755 | 319 |
| North Liberty, IA | 52317 | 319 |
| Oakdale, IA | 52319 | 319 |
| Oxford, IA | 52322 | 319 |
| River Junction, IA | 52755 | 319 |
| Solon, IA | 52333 | 319 |
| Swisher, IA | 52338 | 319 |
| Tiffin, IA | 52340 | 319 |
| Twin View Heights, IA | 52333 | 319 |
| University Heights, IA | 52246 | 319 |
| Windham, IA | 52322 | 319 |
