McMullen County is in Rio Grande Plains Texas. Of the 254 counties in the Lone Star State, McMullen County is 46th in terms of its size (1,156 square miles). The total value of nearly 1,000 acres of undeveloped land recently listed for sale in Texas's McMullen County was $900,000. The average price of undeveloped land for sale in McMullen County was $274,833. Some suggested uses for undeveloped land currently for sale in McMullen County include for hunting/fishing, commercial, and homestead use. Some common wildlife species to be found on undeveloped land for sale in McMullen County include whitetail deer, dove, pig, turkey and deer. Current commercial applications for commercial property for sale in McMullen County include for hunting/fishing, commercial and homestead use. Browse all Texas undeveloped acreage for sale on the Land Network to find your next commercial property or land investment.