Tridell (also Liberty) is an unincorporated community in western Uintah County, Utah, United States. It lies along local roads north of State Route 121, north of the city of Vernal, the county seat of Uintah County. Its elevation is 5,636 feet (1,718 m), and it is located at 40°27′13″N 109°51′0″W (40.4535682, -109.8498700). Although Tridell is unincorporated, it has a post office, with the ZIP code of 84076.