Zip Code 48859 — Mount Pleasant, MI
48859 is a ZIP Code associated with Mount Pleasant, MI, located within Isabella. The postal region supports an estimated population of 2,228 residents across Data Pending housing units, with a population density of 4,224.2 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (43.586320, -84.773410)
| Data Metric | Local Statistic |
| Postal / Zip Code | 48859 |
| Primary City | Mount Pleasant |
| State / Province | MI |
| County | Isabella |
| Total Population | 2,228 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 4,224.2 people/sq mi |
| Timezone | America/Detroit |
How 48859 Compares
| Metric | ZIP 48859 | Isabella County | MI State Average |
| Population | 2,228 | 62,316 | 10,077,716 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 4,224.2 /sq mi | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →