County · Kentucky · United States
Union County ZIP codes
4 ZIP codes · 4 cities · FIPS 21225
Key facts
- State
- Kentucky (KY)
- FIPS code
- 21225
- Population
- 13,379
- Median household income
- $60,989
- Median age
- 41.3
- Land area
- 342.8 sq mi (887.8 km²)
- Population density
- 39 / sq mi
- Area codes
- 270, 364
Cities and ZIP codes in Union County (4)
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.