FCS offices are located in each family law location throughout the county as follows: o San Diego, (619) 844-2888 1100 Union Street, San Diego, CA 92101 o El Cajon, (619) 456-4181 250 E. Main St. El Cajon, CA 92020 o Vista, (760) 201-8300 325 S. Melrose Drive, Vista, CA 92081 o South County, (619) 746-6097 500 Third Ave., Chula Vista, CA 91910