
Bel Air
- County:
- Harford County
- County Seat:
- Yes
- Area (mi²):
- 3.031
- State:
- Maryland
Bel Air is a town located in Harford County, Maryland. Bel Air has a 2025 population of 10,352. It is also the county seat of Harford County. Bel Air is currently declining at a rate of -0.66% annually and its population has decreased by -3.23% since the most recent census, which recorded a population of 10,697 in 2020.
The average household income in Bel Air is $91,577 with a poverty rate of 15.37%. The median age in Bel Air is 41.1 years: 39.1 years for males, and 43.6 years for females.