Farmington is a city in the northeast corner of Fulton County, Illinois, United States. It is north of Canton and Lewistown, west of Peoria and Bloomington, and east of Galesburg and Macomb. The population was 2,601 at the 2000 census. The public school system is Farmington Central Community Unit School District 265, which includes Farmington Central High School. Bcause it is in Fulton County, it is a part of the Canton Micropolitan Area and the wider Peoria Consolidated Statistical Area.
Farmington is located at 40°41′56″N 90°0′13″W / 40.69889°N 90.00361°W / 40.69889; -90.00361 (40.698855, -90.003673).
According to the United States Census Bureau, the city has a total area of 1.2 square miles (3.2 km²), all of it land.