36 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 53215 | Milwaukee | 58,146 |
| 53209 | Milwaukee | 45,170 |
| 53218 | Milwaukee | 41,196 |
| 53204 | Milwaukee | 39,996 |
| 53221 | Milwaukee | 38,044 |
| 53154 | Oak Creek | 37,325 |
| 53132 | Franklin | 35,433 |
| 53219 | Milwaukee | 34,764 |
| 53214 | Milwaukee | 34,480 |
| 53207 | Milwaukee | 34,313 |
| 53211 | Milwaukee | 34,234 |
| 53216 | Milwaukee | 30,345 |
| 53217 | Milwaukee | 29,957 |
| 53212 | Milwaukee | 28,938 |
| 53223 | Milwaukee | 28,793 |
| 53220 | Milwaukee | 27,782 |
| 53208 | Milwaukee | 27,201 |
| 53213 | Milwaukee | 26,905 |
| 53202 | Milwaukee | 25,861 |
| 53225 | Milwaukee | 25,187 |
| 53222 | Milwaukee | 24,663 |
| 53210 | Milwaukee | 23,922 |
| 53227 | Milwaukee | 22,885 |
| 53224 | Milwaukee | 21,223 |
| 53172 | South Milwaukee | 20,442 |
| 53206 | Milwaukee | 19,887 |
| 53226 | Milwaukee | 18,908 |
| 53110 | Cudahy | 17,853 |
| 53228 | Milwaukee | 15,121 |
| 53129 | Greendale | 14,570 |
| 53233 | Milwaukee | 14,497 |
| 53205 | Milwaukee | 9,265 |
| 53235 | Saint Francis | 9,004 |
| 53130 | Hales Corners | 7,712 |
| 53203 | Milwaukee | 2,357 |
| 53295 | Milwaukee | 90 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 36 ZCTAs in Milwaukee County, Wisconsin (US Census).