Churchill County is a county in the western U.S. state of Nevada. As of the 2020 census, the population was 25,516. Its county seat is Fallon. Named for Mexican–American War hero brevet Brigadier General Sylvester Churchill, the county was formed in 1861. Churchill County comprises the Fallon, NV Micropolitan Statistical Area. It is in northwestern Nevada. Churchill County is noteworthy in that it owns and operates the local telephone carrier, Churchill County Communications.

Fallon is a city in Churchill County in the U.S. state of Nevada. The population was 9,327 at time of the 2020 census. Fallon is the county seat of Churchill County and is located in the Lahontan Valley. Fallon is known for being home to Naval Air Station Fallon, located southeast of town.