Johnson County, Iowa ZIP Codes
- ZIP records
13 - Cities represented
10 - Sum of listed ZIP population estimates
159,873
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 52240 | Iowa City | 35,074 |
| 2 | 52241 | Coralville | 23,250 |
| 3 | 52317 | North Liberty | 23,097 |
| 4 | 52245 | Iowa City | 22,853 |
| 5 | 52246 | Iowa City | 22,308 |
| 6 | 52333 | Solon | 7,295 |
| 7 | 52340 | Tiffin | 6,128 |
| 8 | 52247 | Kalona | 5,914 |
| 9 | 52242 | Iowa City | 4,688 |
| 10 | 52338 | Swisher | 3,934 |
Cities in Johnson County
ZIP Directory
- ZIP 52235
- ZIP 52240
- ZIP 52241
- ZIP 52242
- ZIP 52245
- ZIP 52246
- ZIP 52247
- ZIP 52317
- ZIP 52322
- ZIP 52333
- ZIP 52338
- ZIP 52340
- ZIP 52755
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.