Callahan County is in Crosstimbers Texas. Of the 254 counties in the state, 901-square-mile Callahan County ranks 164th by size. Callahan County, Texas, has nearly 1,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of land for sale here was $23 million. The average price of residential land for sale in Callahan County was $436,753. The economy here is mainly agricultural. 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.