Zip Code 48458 — Mount Morris, MI
48458 is a ZIP Code associated with Mount Morris, MI, located within Genesee. 48458 ranks #10 out of 23 ZIP codes in Genesee County by population (and #203 out of 992 in MI). The area supports an estimated population of 19,519 residents across Data Pending housing units, with a population density of 210.8 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (43.120900, -83.683080)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 48458 |
| Primary City | Mount Morris |
| State / Province | MI |
| County | Genesee |
| Total Population | 19,519 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 210.8 people/sq mi |
| Timezone | America/Detroit |
How 48458 Compares
| Metric | ZIP 48458 | Genesee County | MI State Average |
|---|
| Population | 19,519 | 380,439 (Total) | 10,077,716 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 210.8 /sq mi | -- | -- |
| County Pop Rank | #10 of 23 | -- | -- |
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 →