County · Indiana · United States
Martin County ZIP codes
3 ZIP codes · 3 cities · FIPS 18101
Key facts
- State
- Indiana (IN)
- FIPS code
- 18101
- Population
- 9,854
- Median household income
- $65,345
- Median age
- 41.8
- Land area
- 335.8 sq mi (869.6 km²)
- Population density
- 29 / sq mi
- Area codes
- 812, 930
Cities and ZIP codes in Martin County (3)
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.