Baxter County is a county in the Ozark Mountains of Arkansas. Created as Arkansas's 66th county on March 24, 1873, the county has eight incorporated municipalities, including Mountain Home, its largest city and county seat. The county is named for Elisha Baxter, the tenth governor of Arkansas. It is coterminal with the Mountain Home Micropolitan Statis…Baxter County is a county in the Ozark Mountains of Arkansas. Created as Arkansas's 66th county on March 24, 1873, the county has eight incorporated municipalities, including Mountain Home, its largest city and county seat. The county is named for Elisha Baxter, the tenth governor of Arkansas. It is coterminal with the Mountain Home Micropolitan Statistical Area.