Casa de Oro-Mount Helix, California

Casa de Oro-Mount Helix
Location in San Diego County and the state of California
Casa de Oro-Mount Helix
Location in the United States
Coordinates: 32°45′48″N 116°58′39″W / 32.76333°N 116.97750°W / 32.76333; -116.97750
Country United States
State California
County San Diego
Area
 • Total
6.85 sq mi (17.74 km2)
 • Land6.85 sq mi (17.74 km2)
 • Water0 sq mi (0.00 km2)  0%
Population
 (2020)
 • Total
19,576
 • Density2,857.4/sq mi (1,103.25/km2)
Time zoneUTC-8 (Pacific)
 • Summer (DST)UTC-7 (PDT)
ZIP codes
91941, 91977, 92020
Area code619
FIPS code06-11691
GNIS feature ID2407979

Casa de Oro-Mount Helix is a census-designated place (CDP) in the East County region of San Diego County, California. As of the 2020 census, Casa de Oro-Mount Helix had a population of 19,576.

The CDP encompasses several unincorporated neighborhoods near the cities of El Cajon and La Mesa and the CDP of Spring Valley. Locations in the northern (Mount Helix) part of the CDP use La Mesa addresses, while locations in the southern (Casa de Oro) part use Spring Valley addresses. Informally, Casa de Oro is often considered to be a part of Spring Valley.