Tooele ( too-WIL-ə) is a city in Tooele County in the U.S. state of Utah. The population was 22,502 at the 2000 census, and 32,115 at the 2010 census. It is the county seat of Tooele County. About 30 minutes southwest of Salt Lake City, Tooele is known for Tooele Army Depot, for its views of the nearby Oquirrh Mountains and the Great Salt Lake.
The Tooele Valley had no permanent settlement when Mormon pioneers entered the Great Salt Lake Valley in July 1847; it was covered with abundant tall grass. The Mormons first used the valley as wintering grounds for their herds. In September 1849, three families settled on a small stream south of present-day Tooele City. Other families slowly joined them, and by 1853 Tooele City Corporation was organized.
During the nineteenth century, the town was primarily an agricultural community; by the century's end its population was about 1,200.
The 20th century brought more industrialization; in 1904 the Los Angeles and Salt Lake Railroad built a line through the city, and in 1909 the International Smelting and Refining Company smelter was built in Carr Fork/Pine Canyon east of the city .