Harford County Flag

Harford County

State:
Maryland
County Seat:
Bel Air

Harford County's estimated 2025 population is 266,302 with a growth rate of 0.31% in the past year according to the most recent United States census data. Harford County is the 8th largest county in Maryland. The 2010 population was 245,236 and has seen a growth of 8.59% since that time.

266,302
Total Population
609
Population Density (mi²)
8
Population Rank (State)
829 0.31%
Annual Population Growth

Harford County Population

Demographics

Economics and Income Statistics