Uintah County is a county in the U.S. state of Utah. As of the 2020 United States Census the population was 35,620. Its county seat and largest city is Vernal. The county was named for the portion of the Ute Indian tribe that lived in the basin.

Vernal, the county seat and largest city in Uintah County, is in northeastern Utah, approximately 175 miles (280 km) east of Salt Lake City and 20 miles (32 km) west of the Colorado border. As of the 2020 census, the city population was 10,079. The population has since grown to 10,432 as of the 2022 population estimate.