Monroe, MI metro area ZIP codes
The Monroe, MI metropolitan statistical area (CBSA 33780) covers 1 county in Michigan and 18 ZIP codes.
- ZIP codes
- 18
- Population
- 162,831
- Avg. median income
- $80,300population-weighted
- Counties
- 1
Click anywhere on the map to see which ZIP code it's in.
Counties in the Monroe, MI area
ZIP codes in the Monroe, MI area
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 48110 PO Box | Azalia | Monroe County | — | — | — |
| 48117 | Carleton | Monroe County | 10,262 | $78,942 | $335,100 |
| 48131 | Dundee | Monroe County | 8,637 | $85,747 | $296,400 |
| 48133 | Erie | Monroe County | 7,085 | $74,388 | $255,300 |
| 48140 | Ida | Monroe County | 3,664 | $109,257 | $326,500 |
| 48144 | Lambertville | Monroe County | 10,507 | $101,410 | $310,400 |
| 48145 | La Salle | Monroe County | 2,904 | $83,204 | $279,300 |
| 48157 | Luna Pier | Monroe County | 1,244 | $61,641 | $191,900 |
| 48159 | Maybee | Monroe County | 2,578 | $74,519 | $289,100 |
| 48160 | Milan | Monroe County | 13,972 | $103,453 | $308,300 |
| 48161 | Monroe | Monroe County | 26,304 | $67,414 | $202,500 |
| 48162 | Monroe | Monroe County | 28,156 | $67,876 | $238,700 |
| 48166 | Newport | Monroe County | 14,056 | $69,592 | $212,300 |
| 48177 | Samaria | Monroe County | 533 | $81,818 | $210,300 |
| 48179 | South Rockwood | Monroe County | 3,209 | $77,095 | $317,800 |
| 48182 | Temperance | Monroe County | 20,179 | $84,375 | $300,100 |
| 49267 | Ottawa Lake | Monroe County | 3,974 | $97,961 | $333,600 |
| 49270 | Petersburg | Monroe County | 5,567 | $94,840 | $314,500 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Frequently asked questions
How many ZIP codes are in the Monroe, MI metro area?
18 ZIP codes, based on each ZIP code's main county.
Which counties make up the Monroe, MI area?
Monroe County.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).