Monroe County ZIP Codes
Monroe County is a county of Michigan.
- ZIP codes
- 18
- Cities & towns
- 17
- Area codes
- 3
- Land area
- 549 sq mi
Every ZIP code in Monroe County
| ZIP code | City |
|---|---|
| 48110 | Azalia |
| 48117 | Carleton |
| 48131 | Dundee |
| 48133 | Erie |
| 48140 | Ida |
| 48144 | Lambertville |
| 48145 | La Salle |
| 48157 | Luna Pier |
| 48159 | Maybee |
| 48160 | Milan |
| 48161 | Monroe |
| 48162 | Monroe |
| 48166 | Newport |
| 48177 | Samaria |
| 48179 | South Rockwood |
| 48182 | Temperance |
| 49267 | Ottawa Lake |
| 49270 | Petersburg |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Monroe County codes above are listed without a column we would have to invent.
Cities and towns in Monroe County
A further 9 places in Monroe County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.
Area codes covering Monroe County
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.
Where Monroe County's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope every ZIP code recorded in Monroe County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.