17 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 48162 | Monroe | 28,275 |
| 48161 | Monroe | 26,556 |
| 48182 | Temperance | 20,705 |
| 48160 | Milan | 14,308 |
| 48166 | Newport | 13,746 |
| 48144 | Lambertville | 10,275 |
| 48117 | Carleton | 10,199 |
| 48131 | Dundee | 8,306 |
| 48133 | Erie | 6,711 |
| 49270 | Petersburg | 5,728 |
| 49267 | Ottawa Lake | 3,947 |
| 48140 | Ida | 3,370 |
| 48179 | South Rockwood | 3,353 |
| 48145 | La Salle | 2,917 |
| 48159 | Maybee | 2,637 |
| 48157 | Luna Pier | 1,204 |
| 48177 | Samaria | 464 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 17 ZCTAs in Monroe County, Michigan (US Census).