La Presa (Spanish for "The Dam") is a census-designated place (CDP) in the East County region of San Diego County, California, United States. The population was 35,033 at the 2020 census, up from 34,169 at the 2010 census.
La Presa belonged to the neighboring Spring Valley CDP from its inception in 1970 through 1990. It is still considered part of Spring Valley in informal usage and addresses in the CDP continue to use the name Spring Valley. It was named after Sweetwater Dam.
La Presa is served by a 91977 ZIP Code, which is considered Spring Valley according to the USPS.
Geography
La Presa is located at (32.712057, -117.003862). According to the United States Census Bureau, the CDP has a total area of . of it is land and of it (8.67%) is water.