Karnes County's 2026 population is estimated at 15,303, reflecting a 0.55% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Karnes County is the 139th largest county in Texas. The 2010 population was 14,886 and has grown 2.8% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.1 years
Female: 40.1 years
Male: 37.7 years
There are 12,060 adults, (2,268 of whom are seniors) in Karnes County.
Female: 6,176 (41.3%)
Male: 8,792 (58.7%)
The racial composition of Karnes County includes 50.98% White, 10.56% other race, 9.51% Black or African American, and smaller percentages for Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 7,630 | 50.98% |
| Two or more races | 4,253 | 28.41% |
| Other race | 1,581 | 10.56% |
| Black or African American | 1,424 | 9.51% |
| Asian | 45 | 0.3% |
| Native American | 28 | 0.19% |
| Native Hawaiian or Pacific Islander | 7 | 0.05% |
Karnes County 's average per capita income is $43,937. Household income levels show a median of $60,214. The poverty rate stands at 19.15%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $106,910 | - |
| Families | $81,548 | $109,514 |
| Households | $60,214 | $95,318 |
| Non Families | $24,852 | $64,215 |
Average Income
Median Household Income
Poverty Rate