Borrego Springs is a census-designated place (CDP) in San Diego County, California. The population was 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 completely surrounded by Anza-Borrego State Park, the largest California State Park.The village of Borrego Springs is recognized as a designated International Dark Sky Community by the International Dark-Sky Association (IDA). There are no stop lights in Borrego Springs and nighttime lighting is kept to a minimum to protect the views of the night sky. Borrego Springs is approximately 90 miles (140 km) from downtown San Diego and the lights of the highly developed California coast. Borrego Springs was designated as California's first International Dark-Sky Community by the International Dark-Sky Association. It is a center for public astronomy activities throughout the year.
Borrego Springs has pueblo-style, modern architecture and ranch-style house architecture. 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.