County · Washington · United States
Franklin County ZIP codes
5 ZIP codes · 5 cities · FIPS 53021
Key facts
- State
- Washington (WA)
- FIPS code
- 53021
- Population
- 97,676
- Median household income
- $82,755
- Median age
- 30.8
- Land area
- 1,241.6 sq mi (3,215.7 km²)
- Population density
- 79 / sq mi
- Area codes
- 509
Cities and ZIP codes in Franklin County (5)
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.