Geographic Regions and Area Codes in San Diego

San Diego, located in Southern California, is a vibrant city along the Pacific Ocean at San Diego Bay, just north of the international border with Mexico. The city covers an area of 372 square miles (963 square km) and is surrounded by several communities, including Escondido to the north, La Mesa and El Cajon to the east, National City and Chula Vista between the northern and southern portions of the city, Imperial Beach to the southwest, and Coronado to the west.

San Diego operates in the Pacific Time Zone. The primary area codes serving San Diego are 619 and 858. The 619 area code was introduced in 1982 and serves the central and southern parts of the city, while the 858 area code, created in 1999, serves the northern neighborhoods and coastal areas.

Key regions and their area codes include:

  • Central and Southern San Diego: 619
  • Northern neighborhoods and coastal areas: 858