Carlsbad is an affluent seaside resort city occupying a 7-mile stretch of Pacific coastline in northern San Diego County, California.  The southeast quadrant (ZIP code 92009) features several newer master-planned communities set among hillsides, golf courses, Alga Norte Community Park and open spaces. Residents here are served by the Carlsbad Unified School District, San Marcos Unified School District and the Encinitas School District. It is located east of El Camino Real and south of Palomar Airport Road. It includes the La Costa neighborhood, which in 1965 gave its name to the Gold Medal Golf Resort, La Costa Resort and Spa, now known as the Omni La Costa Resort and Spa.