17 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 48162 | Monroe | 28,156 |
| 48161 | Monroe | 26,304 |
| 48182 | Temperance | 20,179 |
| 48166 | Newport | 14,056 |
| 48160 | Milan | 13,972 |
| 48144 | Lambertville | 10,507 |
| 48117 | Carleton | 10,262 |
| 48131 | Dundee | 8,637 |
| 48133 | Erie | 7,085 |
| 49270 | Petersburg | 5,567 |
| 49267 | Ottawa Lake | 3,974 |
| 48140 | Ida | 3,664 |
| 48179 | South Rockwood | 3,209 |
| 48145 | La Salle | 2,904 |
| 48159 | Maybee | 2,578 |
| 48157 | Luna Pier | 1,244 |
| 48177 | Samaria | 533 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 17 ZCTAs in Monroe County, Michigan (US Census).