Tulia is a city in, and county seat of, Swisher County, Texas, United States. The population was 4,967 at the 2010 census; in the 2013 census estimate, it had fallen to 4,903. The city is at the junction of U.S. Route 87 and Texas State Highway 86, approximately two miles east of Interstate 27. Tulia is a center for farming and agribusiness activities.