Knox County is in North Central Plains Texas. Of the 254 counties in the Lone Star State, Knox County is 193rd in terms of its size (547,507 acres). Recent listings of residential land for sale in Knox County, Texas, totals approximately 1,000 acres and a combined market value of roughly $2 million. The most common type of land for sale by combined acreage in Knox County is farms. The average price of residential land for sale in Knox County was $176,058. 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.