County · Virginia · United States
Loudoun County ZIP codes
17 ZIP codes · 13 cities · FIPS 51107
Key facts
- State
- Virginia (VA)
- FIPS code
- 51107
- Population
- 427,082
- Median household income
- $178,707
- Median age
- 37.8
- Land area
- 515.7 sq mi (1,335.8 km²)
- Population density
- 828 / sq mi
- Area codes
- 540, 571, 703, 826
Cities and ZIP codes in Loudoun County (13)
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.