Juab County (/ˈdʒuːæb/ JOO-ab) is a county in western Utah, United States. As of the 2010 United States Census, the population was 10,246. Its county seat and largest city is Nephi.
Juab County lies on the west side of Utah. Its west border abuts the east border of the state of Nevada. Its planar areas consist of rugged arid semi-arable fine-grain soil, interrupted with hills and low mountains. Its eastern border is loosely defined by the ridgeline of an arm of the Wasatch Mountains. The terrain generally slopes to the north, with its highest point on Mount Ibapah, a crest of the East Central Great Basin Range in northwest Juab County. The listed elevation of Mt. Ibapah is 12,087′ (3684m) ASL. The county has a total area of 3,406 square miles (8,820 km), of which 3,392 square miles (8,790 km) is land and 14 square miles (36 km) (0.4%) is water.
As of July 1, 2015, the US Census Bureau estimates that there were 10,594 people and 3,557 housing units in the county. The population density was 3.12/sqmi (1.21/km²). There were 3,066 households. The racial makeup of the county was 96.4% White, 0.4% Black or African American, 1.0% Native American, 0.4% Asian, 0.2% Pacific Islander, and 1.5% from two or more races. 4.7% of the population were Hispanic or Latino of any race.
In 2010, there were 3,093 households out of which 47.8% had children under the age of 18 living with them, 68.50% were married couples living together, 8.80% had a female householder with no husband present, and 19.40% were non-families. 17.30% of all households the householder lived alone. The average household size was 3.27 and the average family size was 3.74.
The county population contained 40.1% 19 and younger, 5.0% from 20 to 24, 24.80% from 25 to 44, 20.1% from 45 to 64, and 10.2% who were 65 years of age or older. The median age was 29.3 years. 51% of the population was male and 49% was female.
The median income for a household in the county was $56,976. The per capita income for the county was $18,503 and 11.4% of the population were below the poverty line.