Borrego Springs is a census-designated place (CDP) in San Diego County, California. The population was 4,031 at the 2020 census and 3,429 at the 2010 census, up from 2,535 at the 2000 census, made up of both seasonal and year-round residents. Borrego Springs is surrounded by Anza-Borrego State Park, California's largest state park.

Anza-Borrego Desert State Park is a California State Park located within the Colorado Desert of southern California, United States. The park takes its name from 18th century Spanish explorer Juan Bautista de Anza and borrego, a Spanish word for sheep. With 585,930 acres (237,120 ha) that includes one-fifth of San Diego County, it is the largest state park in California and the third largest state park nationally.