Sevier is an unincorporated community in southwestern Sevier County, Utah, United States. It lies in the valley of the Sevier River along U.S. Route 89 southwest of the city of Richfield, the county seat of Sevier County. Its elevation is 5,584 feet (1,702 m), and it is located at 38°35′11″N 112°15′30″W﻿ / ﻿38.58639°N 112.25833°W﻿ / 38.58639; -112.25833 (38.5863615, -112.2582612). Although Sevier is unincorporated, it has a post office, with the ZIP code of 84766. It has a population of about 80 people. Sevier has many farms.