Trinity County is included in the Huntsville, TX Micropolitan Statistical Area.

[3] As of the census[9] of 2000, there were 13,779 people, 5,723 households, and 4,000 families residing in the county.

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.

[10] Union Pacific operates a freight line running north–south through Trinity County.

[11] Media related to Trinity County, Texas at Wikimedia Commons