Park. It also includes the unincorporated area of Rossmoor. The Third Supervisorial District consists of the cities of Orange, Tustin, Villa Park, and Yorba Linda, most of the City of Irvine, as well as the Anaheim Hills area in the city of Anaheim. It also includes the unincorporated areas of El Modena, MCAS El Toro, Modjeska Canyon, Olive, Orange Park Acres, Santiago Canyon, Silverado, Trabuco Canyon, and Tustin Foothills. The Fourth Supervisorial District consists of the cities of Brea, Fullerton, La Habra, Placentia, the portions of the city of Anaheim outside of Anaheim Hills, and most of Buena Park. The Fifth Supervisorial District consists of the cities of Aliso Viejo, Dana Point, Laguna Beach, Laguna Hills, Laguna Niguel, Laguna Woods, Lake Forest, Mission Viejo, Rancho Santa Margarita, San Clemente, and San Juan Capistrano, along with small southwestern portions of the City of Irvine, as well as the unincorporated areas of Coto de Caza, Ladera Ranch, and Las Flores. 2002–2012 The First Supervisorial District consisted of the cities of Santa Ana and Westminster, as well as the eastern half of the city of Garden Grove. The Second Supervisorial District consisted of the cities of Costa Mesa, Cypress, Fountain Valley, Huntington Beach, La Palma, Los Alamitos, Newport Beach, Seal Beach, and Stanton, as well as the western half of the city of Garden Grove. It also includes the unincorporated areas of Rossmoor, Sunset Beach, and Surfside. The Third Supervisorial District consisted of the cities of Brea, Irvine, Orange, Tustin, Villa Park, and Yorba Linda, as well as the Anaheim Hills area in the city of Anaheim. It also includes the unincorporated areas of El Modena, MCAS El Toro, Modjeska Canyon, Olive, Orange Park Acres, Santiago Canyon, Silverado, Trabuco Canyon, and Tustin Foothills. The Fourth Supervisorial District consisted of the cities of Buena Park, Fullerton, La Habra, Placentia, as well as the portions of the city of Anaheim outside of Anaheim Hills. The Fifth Supervisorial District consisted of the cities of Aliso Viejo, Dana Point, Laguna Beach, Laguna Hills, Laguna Niguel, Laguna Woods, Lake Forest, Mission Viejo, Rancho Santa Margarita, San Clemente, San Juan Capistrano, as well as the unincorporated areas of Coto de Caza, Ladera Ranch, and Las Flores. Special elections Since voters adopted Measure V, the creation of the county charter, in March 2002, vacancies on the Board of Supervisors have been filled by special election. January 28, 2003, Third District