United High School, or UHS, is a public four-year high school located near Monmouth, Illinois.

[3] Despite the Alexis United misnomer sometimes used to describe the high school, the campus is actually located 2 miles east of Monmouth, IL, though the district's north campus and one of the elementary schools is located in Alexis, Illinois.

The misnomer is due to the district office previously being located in Alexis, Illinois.

The school serves a mixed city fringe, village, and rural residential community on the outskirts of the city of Monmouth, in the villages of Alexis, Kirkwood, Little York, North Henderson, and the unincorporated communities of Cameron and Gerlaw.

[4] Much of the school district is within the Galesburg micropolitan statistical area.