Mount San Jacinto State Park is in the San Jacinto Mountains, of the Peninsular Ranges system, in Riverside County, California, United States. A majority of the park is within the Santa Rosa and San Jacinto Mountains National Monument. The park is near the Greater Los Angeles and San Diego metropolitan areas.
Location: Riverside County, California, United States
Established: 1933
Nearest city: Idyllwild, California
Area: 14,000 acres (5,700 ha)
Governing body: California Department of Parks and Recreation