ZIP code · Harsens Island · Michigan · United States
ZIP code 48028 — Harsens Island
ZIP code 48028 serves Harsens Island, Michigan.
- Postal code
- 48028Single source Value from one source, not cross-checked.
- City
- Harsens Island
- County
- St. Clair
- State
- Michigan
- Country
- United States
- Coordinates
- 42.5850, -82.5860 — precision precise (locality)
View on OpenStreetMap - Population
- 1,058 (ZCTA, ACS 5-year)
- Median household income
- $106,765
- Median age
- 63.4
- Time zone
- America/Detroit (UTC−5 / UTC−4 DST)
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page