Tulia is a city in, and county seat of, Swisher County, Texas, United States. The population was 5,117 at the 2000 census; in the 2005 census estimate, it had fallen to 4,714. The city is at the Junction of U.S. Route 87 and Texas State Highway 86, approximately two miles east Interstate 27. Tulia is a Center for farming and agribusiness activities. Its site was originally on the acreage of the Tule Ranch division of the JA Ranch. In 1887 a Post office was established in James A. Parrish's dugout on Middle Tule Draw nine miles west of what is now the site of Tulia. Evidently the name Tule, after the nearby creek, had been selected for this post office, but at some point a clerk's error changed the name to Tulia.