Monmouth is a small census-designated place (CDP) located in Fresno County, California.
Situated approximately 7.25 miles west of Selma, it lies within the Fresno metropolitan area. The community was named by officials of the Atchison, Topeka and Santa Fe Railroad after Monmouth, Illinois, and a post office operated there from 1908 to 1919. As of the 2020 census, Monmouth had a population of 120 residents.
ZIP code: 93725
Elevation: 276 feet (84 meters) Population: 120 (2020 census)
Area code: 559