Cobb County's 2026 population is estimated at 800,198, reflecting a 0.8% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Cobb County is the 3rd largest county in Georgia. The 2010 population was 689,542 and has grown 16.05% since 2010.
Data after 2023 is projected based on recent change
Overall: 37.5 years
Female: 38.5 years
Male: 36.6 years
There are 600,241 adults, (105,818 of whom are seniors) in Cobb County.
Female: 397,279 (51.2%)
Male: 377,929 (48.8%)
The racial composition of Cobb County includes 48.98% White, 26.72% Black or African American, 7.83% other race, 5.49% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 379,724 | 48.98% |
| Black or African American | 207,116 | 26.72% |
| Two or more races | 80,882 | 10.43% |
| Other race | 60,692 | 7.83% |
| Asian | 42,571 | 5.49% |
| Native American | 3,827 | 0.49% |
| Native Hawaiian or Pacific Islander | 396 | 0.05% |
Cobb County 's average per capita income is $61,579. Household income levels show a median of $102,738. The poverty rate stands at 8.74%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $146,820 | $183,314 |
| Families | $124,044 | $159,440 |
| Households | $102,738 | $136,477 |
| Non Families | $66,588 | $85,345 |
Average Income
Median Household Income
Poverty Rate
