El Cajon is a city in San Diego County, California, United States. The population was 94,869 at the 2000 census. El Cajon is Spanish for 'the drawer', relating to it being a parcel of land granted out of the vast Mission San Diego de Alcala tract and used for farming by Spanish missionaries. El Cajon apartments for rent comparison page shows most up to date rent information on El Cajon apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.