County · Maryland · United States
Harford County ZIP codes
20 ZIP codes · 19 cities · FIPS 24025
Key facts
- State
- Maryland (MD)
- FIPS code
- 24025
- Population
- 262,509
- Median household income
- $111,317
- Median age
- 40.5
- Land area
- 437.1 sq mi (1,132.2 km²)
- Population density
- 601 / sq mi
- Area codes
- 410, 443, 667
Cities and ZIP codes in Harford 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.