Harford County, Maryland
Harford County  | |
|---|---|
Harford County Courthouse  | |
Location within the U.S. state of Maryland  | |
Maryland's location within the U.S.  | |
| Coordinates: 39°32′N 76°18′W / 39.54°N 76.30°W | |
| Country | United States | 
| State | Maryland | 
| Founded | December 17, 1773 | 
| Named after | Henry Harford | 
| Seat | Bel Air | 
| Largest city | Aberdeen | 
| Area | |
 • Total  | 527 sq mi (1,360 km2) | 
| • Land | 437 sq mi (1,130 km2) | 
| • Water | 90 sq mi (200 km2) 17% | 
| Population  (2020)  | |
 • Total  | 260,924 | 
 • Estimate  (2023)  | 264,644 | 
| • Density | 500/sq mi (190/km2) | 
| Time zone | UTC−5 (Eastern) | 
| • Summer (DST) | UTC−4 (EDT) | 
| Congressional district | 1st | 
| Website | www | 
Harford County is a county located in the U.S. state of Maryland. As of the 2020 census, the population was 260,924. Its county seat is Bel Air. Harford County is included in the Washington-Baltimore-Arlington, DC-MD-VA-WV-PA Combined Statistical Area. The county is part of the Central Maryland region of the state.