36 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 53215 | Milwaukee | 58,375 |
| 53209 | Milwaukee | 44,963 |
| 53218 | Milwaukee | 40,581 |
| 53204 | Milwaukee | 40,008 |
| 53221 | Milwaukee | 38,428 |
| 53154 | Oak Creek | 36,473 |
| 53132 | Franklin | 35,272 |
| 53214 | Milwaukee | 35,010 |
| 53219 | Milwaukee | 34,855 |
| 53207 | Milwaukee | 34,536 |
| 53211 | Milwaukee | 34,427 |
| 53217 | Milwaukee | 30,381 |
| 53216 | Milwaukee | 29,772 |
| 53223 | Milwaukee | 29,287 |
| 53212 | Milwaukee | 29,099 |
| 53220 | Milwaukee | 27,678 |
| 53208 | Milwaukee | 27,407 |
| 53213 | Milwaukee | 26,293 |
| 53202 | Milwaukee | 26,269 |
| 53225 | Milwaukee | 25,277 |
| 53210 | Milwaukee | 24,605 |
| 53222 | Milwaukee | 24,400 |
| 53227 | Milwaukee | 22,988 |
| 53224 | Milwaukee | 21,445 |
| 53172 | South Milwaukee | 20,547 |
| 53206 | Milwaukee | 20,219 |
| 53226 | Milwaukee | 18,893 |
| 53110 | Cudahy | 17,964 |
| 53228 | Milwaukee | 15,084 |
| 53129 | Greendale | 14,607 |
| 53233 | Milwaukee | 14,412 |
| 53235 | Saint Francis | 9,318 |
| 53205 | Milwaukee | 9,091 |
| 53130 | Hales Corners | 7,647 |
| 53203 | Milwaukee | 2,077 |
| 53295 | Milwaukee | 121 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 36 ZCTAs in Milwaukee County, Wisconsin (US Census).