Cahuilla is an unincorporated community

Unincorporated area

In law, an unincorporated area is a region of land that is not a part of any municipality.To "incorporate" in this context means to form a municipal corporation, a city, town, or village with its own government. An unincorporated community is usually not subject to or taxed by a municipal government...

 in Riverside County

Riverside County, California

Riverside County is a county in the U.S. state of California. One of 58 California counties, it covers in the southern part of the state, and stretches from Orange County to the Colorado River, which forms the state border with Arizona. The county derives its name from the city of Riverside,...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. It lies at an elevation of 3642 feet (1110 m). Cahuilla is located 14 miles (22.5 km) south of Idylwild.

The Cahuilla post office opened in 1888, moved in 1889 and 1895, closed in 1903, reopened in 1909, closed for a time in 1919, closed again in 1921, reopened in 1924 before closing for good in 1926.