Lamar County's 2026 population is estimated at 21,230, reflecting a 1.29% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Lamar County is the 88th largest county in Georgia. The 2010 population was 18,260 and has grown 16.27% since 2010.
Data after 2023 is projected based on recent change
Overall: 39.2 years
Female: 39.7 years
Male: 37 years
There are 15,571 adults, (3,456 of whom are seniors) in Lamar County.
Female: 10,141 (51.8%)
Male: 9,430 (48.2%)
The racial composition of Lamar County includes 68.38% White, 27.1% Black or African American, and smaller percentages for Asian, other race, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 13,382 | 68.38% |
| Black or African American | 5,304 | 27.1% |
| Two or more races | 625 | 3.19% |
| Asian | 140 | 0.72% |
| Other race | 104 | 0.53% |
| Native American | 16 | 0.08% |
Lamar County 's average per capita income is $51,981. Household income levels show a median of $67,062. The poverty rate stands at 9.59%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $110,598 | - |
| Families | $86,944 | $102,715 |
| Households | $67,062 | $86,227 |
| Non Families | $48,904 | $49,503 |
Average Income
Median Household Income
Poverty Rate