Coryell County is located in the U.S. state of Texas. In 2000, its population was 74,978. The seat of the county is Gatesville. Coryell County forms part of the Killeen–Temple–Fort Hood Metropolitan Statistical Area. It is named for James Coryell, a frontiersman who was killed by wild Indians.
There were 19,950 households out of which 47.70% had children under the age of 18 living with them, 64.80% were married couples living together, 11.00% had a female householder with no husband present, and 20.90% were non-families. 16.90% of all households were made up of individuals and 5.50% had someone living alone who was 65 years of age or older. The average household size was 2.91 and the average family size was 3.27.
In the county, the population was spread out with 26.20% under the age of 18, 17.90% from 18 to 24, 36.30% from 25 to 44, 13.80% from 45 to 64, and 5.70% who were 65 years of age or older. The median age was 28 years. For every 100 females there were 105.30 males. For every 100 females age 18 and over, there were 106.20 males.
The median income for a household in the county was $35,999, and the median income for a family was $38,307. Males had a median income of $24,236 versus $21,186 for females. The per capita income for the county was $14,410. About 7.80% of families and 9.50% of the population were below the poverty line, including 12.30% of those under age 18 and 9.00% of those age 65 or over.