Spring Valley is a census-designated place (CDP) in San Diego County, California. The population was 28,205 at the 2010 census. Spring Valley is served by the 91977 and 91978 ZIP codes.
The name “Spring Valley” may also refer to a wider area including the Spring Valley CDP, La Presa and part of the neighborhood of Casa de Oro (which extends into La Mesa). There are claims that the Greater Spring Valley area has over 100,000 residents although this claims large areas that are actually unincorporated parts of La Mesa and El Cajon.
Public high school education is provided by the Grossmont Union High School District. Elementary and middle schools are run by the La Mesa-Spring Valley School District.