Mapleton is a city in Utah County, Utah, United States. It is part of the Provo–Orem, Utah Metropolitan Statistical Area. The population was 5,809 at the 2000 census.
According to the United States Census Bureau, the city has a total area of 9.2 square miles (23.9 km²), all of it land. Its elevation is 4,700 feet (1,400 m) above sea level.
The City is dominated by 10,193-foot (3,107 m) Maple Mountain to the southeast and Ether Peak (7,533 ft) to the northeast. Between the two mountains is Maple Canyon, which is home to Whiting Campground in the Uinta National Forest. Mapleton residents continue to call Spanish Fork Peak “Maple Mountain” despite the USGS having opted for the name favoring the city to the west. The Mountain has also been informally referred to as Sierra Bonita and Monument Peak. There are several official Maple Mountains in Utah, none of them in Utah County. The City is bounded to the north by Hobble Creek, and extends southward to the Ensign-Bickford plant in Spanish Fork. The Mapleton Lateral Canal crosses the eastern side of the city, and the Bureau of Reclamation began piping it in 2007.