2020 census
Karnes County, Texas – Racial and ethnic composition
Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.| Race / Ethnicity (NH = Non-Hispanic) | Pop 2000 [8] | Pop 2010 [9] | Pop 2020 [10] | % 2000 | % 2010 | % 2020 |
|---|
| White alone (NH) | 6,309 | 5,956 | 5,388 | 40.85% | 40.18% | 36.63% |
| Black or African American alone (NH) | 1,603 | 1,351 | 1,116 | 10.38% | 9.11% | 7.59% |
| Native American or Alaska Native alone (NH) | 37 | 37 | 26 | 0.24% | 0.25% | 0.18% |
| Asian alone (NH) | 62 | 25 | 145 | 0.40% | 0.17% | 0.99% |
| Pacific Islander alone (NH) | 2 | 2 | 1 | 0.01% | 0.01% | 0.01% |
| Other race alone (NH) | 7 | 18 | 61 | 0.05% | 0.12% | 0.41% |
| Mixed race or Multiracial (NH) | 102 | 59 | 239 | 0.66% | 0.40% | 1.62% |
| Hispanic or Latino (any race) | 7,324 | 7,376 | 7,734 | 47.42% | 49.76% | 52.58% |
| Total | 15,446 | 14,710 | 14,710 | 100.00% | 100.00% | 100.00% |
As of the 2020 United States census, there were 14,710 people, 4,552 households, and 3,156 families residing in the county.
As of the census [11] of 2000, there were 15,446 people, 4,454 households, and 3,246 families residing in the county. The population density was 21 people per square mile (8.1 people/km2). There were 5,479 housing units at an average density of 7 units per square mile (2.7/km2). The racial makeup of the county was 68.55% White, 10.79% Black or African American, 0.68% Native American, 0.43% Asian American, 0.06% Pacific Islander, 17.23% of other races, and 2.26% of two or more races. 47.42% of the population were Hispanic or Latino American of any race.
There were 4,454 households, out of which 34.00% had children under the age of 18 living with them, 53.60% were married couples living together, 13.70% had a female householder with no husband present, and 27.10% were non-families. 24.40% of all households were made up of individuals, and 13.60% had someone living alone who was 65 years of age or older. The average household size was 2.66 and the average family size was 3.15.
In the county, the population was spread out, with 21.80% under the age of 18, 11.50% from 18 to 24, 34.20% from 25 to 44, 18.20% from 45 to 64, and 14.40% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 146.20 males. For every 100 females age 18 and over, there were 162.50 males.
The median income for a household in the county was $26,526, and the median income for a family was $30,565. Males had a median income of $27,260 versus $19,367 for females. The per capita income for the county was $13,603. About 18.50% of families and 21.90% of the population were below the poverty line, including 29.10% of those under age 18 and 20.50% of those age 65 or over.
United States
Texas 
