Trinity County is in Piney Woods South Texas. Of the 254 counties in the state, 713-square-mile Trinity County ranks 216th by size. Recent Land Network data shows around 1,000 acres of residential land for sale in Texas's Trinity County, which is valued at a combined $45 million. The average price of residential acreage for sale in Trinity County was $336,406. Browse all residential land and rural property for sale in Texas to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.