County · Missouri · United States
Franklin County ZIP codes
19 ZIP codes · 19 cities · FIPS 29071
Key facts
- State
- Missouri (MO)
- FIPS code
- 29071
- Population
- 105,316
- Median household income
- $71,973
- Median age
- 41.4
- Land area
- 922.6 sq mi (2,389.7 km²)
- Population density
- 114 / sq mi
- Area codes
- 573, 636
Cities and ZIP codes in Franklin County (19)
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.