Farmington is a city in Davis County, Utah, United States. It is part of the Ogden–Clearfield, Utah Metropolitan Statistical Area. The population was 12,081 at the 2000 census. It is the county seat of Davis County. Lagoon Amusement Park is located in Farmington.
The city has made it onto the Money magazine's "Best Places to Live" index, and was ranked number 14 on the 2009 list.
Originally known as North Cottonwood, Farmington was permanently settled by Mormon pioneers in 1847. The Children's Primary Association of The Church of Jesus Christ of Latter-day Saints was organized here on 11 August 1878. It was the birthplace of one of the longest lived Latter-day Saint apostles, LeGrand Richards. His maternal great-grandfather, Joseph Lee Robinson, was the first bishop of what was then the North Cottonwood Ward. Lagoon Amusement Park was founded here in 1886 and occupies 100 acres (0.40 km2) of the city. Ezra T. Clark was an early settler of Farmington who later founded the Davis County Bank and built several houses in the area, some of which are located in the Clark Lane Historic District, listed on the National Register of Historic Places.