It is part of the Salt Lake City, Utah Metropolitan Statistical Area.

[5] According to the United States Census Bureau, the town has a total area of 18.3 square miles (47.5 km2), all land.

In 1934, a large area of some 33 square miles (85 km2), comprising the settlements of Clover, St. John, and Vernon, was incorporated into a town called Onaqui.

The incorporation was essentially a bureaucratic tactic to secure federal aid for development of municipal infrastructure, including from the Rural Electrification Administration.

When the people of Vernon were granted a petition to incorporate separately on February 22, 1972, the remaining town was renamed Rush Valley.