Borrego Springs is an unincorporated community in San Diego County, California. The Borrego Springs census-designated place (CDP) had a population of 2,535 at the 2000 census. Because of frequent summer daytime temperatures over 100°F, many residents are seasonal. The Anza-Borrego Desert State Park visitor's center is located west of town. A local landmark is the traffic roundabout between the airport and downtown, known as Christmas Circle. The town includes a branch of the San Diego County Library.