Located in Rio Grande Plains Texas, 3,375-square-mile Webb County is one of the ten biggest counties in the state. The total value of nearly 1,000 acres of residential land and property recently listed for sale in Webb County, Texas, was roughly $15 million. The average price of residential land for sale in Webb County was $1 million. 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.