Cobb County Flag

Cobb County

State:
Georgia
County Seat:
Marietta

Cobb County's estimated 2026 population is 800,198 with a growth rate of 0.8% in the past year according to the most recent United States census data. Cobb County is the 3rd largest county in Georgia. The 2010 population was 689,542 and has seen a growth of 16.05% since that time.

800,198
Total Population
2,354
Population Density (mi²)
3
Population Rank (State)
6.3K 0.8%
Annual Population Growth

Cobb County Population

Demographics

Economics and Income Statistics