Trinity County is a county located in the U.S. state of Texas. As of the 2010 census, the population was 14,585. Its county seat is Groveton. The county is named for the Trinity River.
According to the U.S. Census Bureau, the county has a total area of 714 square miles (1,850 km), of which 694 square miles (1,800 km) is land and 20 square miles (52 km) (2.9%) is water.
As of the census of 2000, there were 13,779 people, 5,723 households, and 4,000 families residing in the county. The population density was 20 people per square mile (8/km²). There were 8,141 housing units at an average density of 12 per square mile (5/km²). The racial makeup of the county was 83.75% White, 11.92% Black or African American, 0.41% Native American, 0.23% Asian, 0.01% Pacific Islander, 2.66% from other races, and 1.01% from two or more races. 4.85% of the population were Hispanic or Latino of any race.
There were 5,723 households out of which 25.70% had children under the age of 18 living with them, 55.10% were married couples living together, 11.20% had a female householder with no husband present, and 30.10% were non-families. 26.80% of all households were made up of individuals and 14.60% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.85.
In the county, the population was spread out with 22.90% under the age of 18, 7.00% from 18 to 24, 22.30% from 25 to 44, 25.80% from 45 to 64, and 22.00% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 93.60 males. For every 100 females age 18 and over, there were 90.70 males.
The median income for a household in the county was $27,070, and the median income for a family was $32,304. Males had a median income of $27,518 versus $21,696 for females. The per capita income for the county was $15,472. About 13.20% of families and 17.60% of the population were below the poverty line, including 23.80% of those under age 18 and 13.90% of those age 65 or over.
Trinity County Texas neighborhoods include: Barnes Switch, Creekside, Glen Haven / The Landing, Harbor Point, Jungle Village, Lake L Acres, Main Drive, Port Adventure, Timber Bay, Trinity Plantation, Westwood Shores