NULL Of 254 counties in the state, Castro County is 169th in terms of its size (899 square miles). Castro County is in Panhandle Texas. The total value of almost 1,000 acres of hunting land recently listed for sale in Texas's Castro County was almost $1 million. Browse all Castro County hunting land for sale on the Land Network to find the hunting acreage that suits your hunting and outdoor-recreation interests, whether you're an individual looking to invest in hunting land for future use or commercial operation looking for land on which to expand your hunting business. The most common type of land for sale by combined acreage in Castro County is farms.