Frontier, MI zip code
Frontier, Michigan uses one zip code: 49239. Most of it is in Hillsdale County.
Zip codes
1
Population
—
All zips combined
Zip codes in Frontier
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 49239 · PO box | — | — |
Frontier, Michigan uses one zip code: 49239. Most of it is in Hillsdale County.
| Zip | Type | Population | IncomeMedian income |
|---|---|---|---|
| 49239 · PO box | — | — |