Mount Pleasant, MI ZIP codes
Mount Pleasant (also written Mt. Pleasant), Michigan has 3 ZIP codes, including 1 PO Box ZIP. They are in Isabella County.
- Population in these ZIPs
- 44,454
- Avg. median income
- $51,300population-weighted
- Typical home value
- $226,700population-weighted
- Metro area
- Mount Pleasant, MI
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Mount Pleasant, MI ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 48804 PO Box | Isabella County | — | — | — |
| 48858 | Isabella County | 42,226 | $51,267 | $226,700 |
| 48859 | Isabella County | 2,228 | — | — |
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
Cities near Mount Pleasant
Frequently asked questions
What is the ZIP code for Mount Pleasant, MI?
What county is Mount Pleasant, Michigan in?
Mount Pleasant ZIP codes are in Isabella County.
Which Mount Pleasant ZIP codes are PO Boxes?
48804 is a PO Box or single-organization ZIP code; it has no residential delivery area.