Aransas County is a county located in the U.S. state of Texas. It is part of the Corpus Christi Metropolitan Statistical Area. As of 2000, the population was 22,497. Its county seat is Rockport. (See List of Texas county name etymologies.) Aransas County was formed in 1871 from Refugio County.
There were 9,132 households out of which 27.00% had children under the age of 18 living with them, 57.00% were married couples living together, 9.40% had a female householder with no husband present, and 29.90% were non-families. 25.30% of all households were made up of individuals and 11.60% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 2.90.
In the county, the population was spread out with 23.80% under the age of 18, 6.20% from 18 to 24, 23.20% from 25 to 44, 27.10% from 45 to 64, and 19.70% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 98.90 males. For every 100 females age 18 and over, there were 95.50 males.
The median income for a household in the county was $30,702, and the median income for a family was $34,915. Males had a median income of $31,597 versus $20,289 for females. The per capita income for the county was $18,560. About 15.50% of families and 19.90% of the population were below the poverty line, including 31.00% of those under age 18 and 10.20% of those age 65 or over.
Some residents (including the city of Aransas Pass, which is actually outside of the county) are served by the Aransas Pass Independent School District.