Frio County is in Edwards Plateau South Texas. Of the 254 counties in the Lone Star State, Frio County is 50th in terms of its size (1,134 square miles). The most common type of land for sale by combined acreage in Frio County is recreational property. Browse all Frio County horse farms for sale on the Land Network to find the equestrian property that's right for your future needs, whether you're a horse breeder, equestrian business or simply horse lover looking for stable facilities, grooming pens or grazing pasture for your own horses. South Texas is typically classified as the area between the San Antonio metro area and south to the Rio Grande and Gulf of Mexico.