San Diego County, California

115 ZIP codes · 4,210.46 sq mi of land · FIPS 06073

Population	3,288,774
State	California
FIPS code	06073
Time zone	Pacific
Land area	4,210.46 sq mi
Center (lat, long)	33.0236, -116.7761

Area codes in this area

858 949 951

These are the area codes that most often serve San Diego County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Cities and towns (largest first)

Chula Vista · 276,375 Oceanside · 172,242 Escondido · 149,668 Carlsbad · 114,373 El Cajon · 104,449 San Marcos · 94,882 Encinitas · 61,480 La Mesa · 60,797 Santee · 59,332 National City · 58,893 Poway · 48,713 Fallbrook · 32,112 Spring Valley · 31,969 Lemon Grove · 27,686 Imperial Beach · 25,764 Ramona · 22,634 Lakeside · 22,447 Alpine · 15,180BonitaBoulevardCampoDescansoDulzuraGuatayJacumbaJamulMount LagunaPine ValleyPotreroTecate

ZIP codes in San Diego County

91901 Alpine 91902 Bonita 91905 Boulevard 91906 Campo 91910 Chula Vista 91911 Chula Vista 91913 Chula Vista 91914 Chula Vista 91915 Chula Vista 91916 Descanso 91917 Dulzura 91931 Guatay 91932 Imperial Beach 91934 Jacumba 91935 Jamul 91941 La Mesa 91942 La Mesa 91945 Lemon Grove 91948 Mount Laguna 91950 National City 91962 Pine Valley 91963 Potrero 91977 Spring Valley 91978 Spring Valley 91980 Tecate 92003 Bonsall 92004 Borrego Springs 92007 Cardiff By The Sea 92008 Carlsbad 92009 Carlsbad 92010 Carlsbad 92011 Carlsbad 92014 Del Mar 92019 El Cajon 92020 El Cajon 92021 El Cajon 92024 Encinitas 92025 Escondido 92026 Escondido 92027 Escondido 92028 Fallbrook 92029 Escondido 92036 Julian 92037 La Jolla 92040 Lakeside 92054 Oceanside 92055 Camp Pendleton 92056 Oceanside 92057 Oceanside 92058 Oceanside 92059 Pala 92060 Palomar Mountain 92061 Pauma Valley 92064 Poway 92065 Ramona 92066 Ranchita 92067 Rancho Santa Fe 92069 San Marcos 92070 Santa Ysabel 92071 Santee

Showing 60 of 115. See all CA ZIP codes.

Population: U.S. Census Bureau, ACS 5-year estimates, 2024.