36 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 53215 | Milwaukee | 59,400 |
| 53209 | Milwaukee | 46,441 |
| 53218 | Milwaukee | 41,775 |
| 53204 | Milwaukee | 39,203 |
| 53221 | Milwaukee | 39,066 |
| 53154 | Oak Creek | 36,286 |
| 53132 | Franklin | 36,094 |
| 53219 | Milwaukee | 35,223 |
| 53214 | Milwaukee | 34,892 |
| 53211 | Milwaukee | 34,775 |
| 53207 | Milwaukee | 34,767 |
| 53216 | Milwaukee | 31,030 |
| 53217 | Milwaukee | 30,132 |
| 53212 | Milwaukee | 29,292 |
| 53223 | Milwaukee | 28,899 |
| 53208 | Milwaukee | 27,660 |
| 53220 | Milwaukee | 26,931 |
| 53213 | Milwaukee | 26,908 |
| 53225 | Milwaukee | 25,953 |
| 53202 | Milwaukee | 25,850 |
| 53222 | Milwaukee | 24,467 |
| 53210 | Milwaukee | 24,061 |
| 53227 | Milwaukee | 23,263 |
| 53224 | Milwaukee | 21,469 |
| 53172 | South Milwaukee | 20,678 |
| 53206 | Milwaukee | 20,481 |
| 53226 | Milwaukee | 18,595 |
| 53110 | Cudahy | 18,087 |
| 53228 | Milwaukee | 15,162 |
| 53129 | Greendale | 14,683 |
| 53233 | Milwaukee | 13,818 |
| 53235 | Saint Francis | 9,288 |
| 53205 | Milwaukee | 8,683 |
| 53130 | Hales Corners | 7,699 |
| 53203 | Milwaukee | 2,025 |
| 53295 | Milwaukee | 157 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 36 ZCTAs in Milwaukee County, Wisconsin (US Census).