Iowa City, Iowa ZIP Codes
- ZIP records
4 - Sum of listed ZIP population estimates
84,923 - Counties represented
1 - Population range
4,688–35,074 per ZIP
Population sum includes positive estimates in these ZIP records; it is not an official city population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | County | Population estimate |
|---|---|---|---|---|
| 1 | 52240 | Iowa City | Johnson | 35,074 |
| 2 | 52245 | Iowa City | Johnson | 22,853 |
| 3 | 52246 | Iowa City | Johnson | 22,308 |
| 4 | 52242 | Iowa City | Johnson | 4,688 |
Counties represented
All ZIP Codes in Iowa City
- ZIP 52240 — Johnson County
- ZIP 52242 — Johnson County
- ZIP 52245 — Johnson County
- ZIP 52246 — Johnson County
Methodology: ZIP records are grouped by the source file's primary city and state fields. Population ranges and sums use positive ZIP-level estimates; sums should not be read as official city totals. County links use each record's listed county assignment.