Rancho San Diego, California

Rancho San Diego
Rancho San Diego Library view of San Miguel Mountain.
Location in San Diego County and the state of California
Rancho San Diego
Location in the United States
Coordinates: 32°45′58″N 116°55′17″W / 32.76611°N 116.92139°W / 32.76611; -116.92139
Country United States
State California
CountySan Diego
County service area established1970
Area
 • Total
8.697 sq mi (22.524 km2)
 • Land8.697 sq mi (22.524 km2)
 • Water0 sq mi (0 km2)  0%
Elevation
360 ft (110 m)
Population
 • Total
21,858
 • Density2,513.4/sq mi (970.43/km2)
Time zoneUTC-8 (Pacific)
 • Summer (DST)UTC-7 (PDT)
ZIP codes
91941, 91978, 92019
Area code619
FIPS code06-59550
GNIS feature ID1867053

Rancho San Diego is a census-designated place (CDP) in the East County region of San Diego County, California. The population was 21,858 at the 2020 census, up from 21,208 at the 2010 census. The area was developed as subdivisions beginning in the 1970s.