High Quality Content by WIKIPEDIA articles! American Fork is a city in Utah County, Utah, United States, at the foot of Mount Timpanogos in the Wasatch Range, north of Utah Lake. It is part of the Provo–Orem, Utah Metropolitan Statistical Area. The population was 26,263 at the 2010 census, nearly a 20% growth since the 2000 census. It has been rapidly growing since the 1970s.