Travis County, home of Austin and the fourth-largest Texas county by population, is in central Texas on the Colorado River. It was named after Lt. Colonel William Barret Travis, commander of the Texian forces at the Battle of the Alamo. It was created out of Bastrop County in 1840. Its original area included most of Blanco and Hays Counties and parts of Burnet, Comal, and Kendall Counties. Its present boundaries and size of 1,022 square miles were set on February 5, 1852. Copyright © TexasCounties.net. The boundary overlays are from the Newberry Library.