Warner Springs is a small unincorporated community in northern San Diego County, California. It is associated with two National Historic Landmarks, the Oak Grove Butterfield Stage Station and Warner's Ranch, both connected to the Butterfield Overland Mail stagecoach line. It is also near the Palomar Observatory and Warner Springs Ranch. It has a post office and the Zip code is 92086. Warner Springs is also a popular area for Gliding due to the topography of the area.