Zip Code 48028 — Harsens Island, MI
48028 is a ZIP Code associated with Harsens Island, MI, located within St. Clair. The postal region supports an estimated population of 1,272 residents across Data Pending housing units, with a population density of 27.7 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (42.589470, -82.619480)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 48028 |
| Primary City | Harsens Island |
| State / Province | MI |
| County | St. Clair |
| Total Population | 1,272 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 27.7 people/sq mi |
| Timezone | America/Detroit |
How 48028 Compares
| Metric | ZIP 48028 | St. Clair County | MI State Average |
|---|
| Population | 1,272 | 161,718 | 10,077,716 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 27.7 /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 →