Lamar County's 2026 population is estimated at 67,788, reflecting a 0.78% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Lamar County is the 10th largest county in Mississippi. The 2010 population was 56,109 and has grown 20.81% since 2010.
Data after 2023 is projected based on recent change
Overall: 37.7 years
Female: 38.8 years
Male: 37 years
There are 49,738 adults, (10,062 of whom are seniors) in Lamar County.
Female: 34,188 (52%)
Male: 31,525 (48%)
The racial composition of Lamar County includes 71.25% White, 21.77% Black or African American, and smaller percentages for other race, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 46,820 | 71.25% |
| Black or African American | 14,306 | 21.77% |
| Two or more races | 2,532 | 3.85% |
| Other race | 1,326 | 2.02% |
| Asian | 611 | 0.93% |
| Native American | 118 | 0.18% |
Lamar County 's average per capita income is $48,958. Household income levels show a median of $70,909. The poverty rate stands at 14.68%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $104,890 | - |
| Families | $90,473 | $116,606 |
| Households | $70,909 | $96,987 |
| Non Families | $38,219 | $48,543 |
Average Income
Median Household Income
Poverty Rate