County · Montana · United States
Granite County ZIP codes
3 ZIP codes · 3 cities · FIPS 30039
Key facts
- State
- Montana (MT)
- FIPS code
- 30039
- Population
- 3,419
- Median household income
- $54,646
- Median age
- 53.9
- Land area
- 1,727.2 sq mi (4,473.3 km²)
- Population density
- 2 / sq mi
- Area codes
- 406
Cities and ZIP codes in Granite 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.