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County ProfileCA

San Diego County

Population: 3,298,634 · 176 ZIP codes

Demographics

Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.

People
Total population
3,298,634
People
Median age
37.3
Housing
Total households
1,171,278
Income
Median household income
$106,268
Housing
Total housing units
1,250,641
Employment
Employment rate
59.2%
Education
Bachelor’s degree or higher
43.2%
Healthcare
Insured population
93.6%
County details
Local time 01:31:49(PT)
NameSan Diego
Total ZIP codes176total
ZIP codes (by type)
94 Standard66 PO Box16 Unique
Area code442, 619, 760, 858, 951
TimezonePacific Time (PT)
Coordinates33.0236041, -116.7761174
Land area4,210.9 sq miles(10,906.1 km²)

Map of San Diego county, California with ZIP codes

Map of San Diego County, California and ZIP codes

Cities and Communities in San Diego County

Compare the largest cities in San Diego County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.

CityPopulation
Median incomeHousehold
ZIP codes
San Diego1,386,932$111,03275ZIPs
Chula Vista275,487$105,1018ZIPs
Oceanside174,068$104,8097ZIPs
Escondido151,038$91,9677ZIPs
Carlsbad114,746$142,7486ZIPs
El Cajon106,215$67,5114ZIPs
Vista98,381$94,9754ZIPs
San Marcos94,833$109,3774ZIPs
Encinitas62,007$162,2292ZIPs
La Mesa61,121$95,0284ZIPs
Santee60,037$113,3942ZIPs
National City56,173$66,8412ZIPs
La Jolla51,587—5ZIPs
Poway48,841$148,3592ZIPs
Fallbrook32,267$96,3942ZIPs
San Ysidro29,703—2ZIPs
Lemon Grove27,627$88,0092ZIPs
Imperial Beach26,137$86,1112ZIPs
Ramona21,468$107,4271ZIPs
Coronado20,192$134,5342ZIPs
Alpine14,696$108,6602ZIPs
Solana Beach12,941$152,1671ZIPs
Bonita12,917$118,6742ZIPs
Cardiff by the Sea10,981—1ZIPs
Valley Center10,087$132,3611ZIPs
Camp Pendleton9,684—1ZIPs
Jamul6,179$152,7481ZIPs
Bonsall4,546$113,5371ZIPs
Del Mar3,954$199,1521ZIPs
Rancho Santa Fe3,156$175,7922ZIPs
Borrego Springs3,073$86,0781ZIPs
Campo2,955$79,3271ZIPs
Pauma Valley2,246—1ZIPs
Julian1,768$77,8031ZIPs
Pine Valley1,645$132,7721ZIPs
Descanso1,499$110,1321ZIPs
Pala1,490$106,2501ZIPs
Warner Springs1,490—1ZIPs
Dulzura1,126—1ZIPs
Santa Ysabel1,093—1ZIPs
Lakeside843$55,7591ZIPs
Potrero648$10,3541ZIPs
Jacumba540—1ZIPs
Guatay481—1ZIPs
Boulevard359$78,2171ZIPs
Ranchita330—1ZIPs
Palomar Mountain288—1ZIPs
Tecate145—2ZIPs
Mount Laguna74$55,0661ZIPs

— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.

ZIP Codes in San Diego County

Review the most populated postal areas across San Diego County. Use the ranking below to compare resident density and demographic scales between the county's major zones.

ZIPCity
Median incomeHousehold
Population (ZIP)
91911Chula Vista$79,33485,442
92154San Diego$90,03584,027
91910Chula Vista$87,70579,613
92126San Diego$123,23274,788
92021El Cajon$74,01370,584
92105San Diego$65,17466,579
92114San Diego$90,17166,248
92115San Diego$75,17864,251
92130San Diego$201,73161,595
92020El Cajon$76,03260,454
92071Santee$113,61860,163
91950National City$66,42657,849
92057Oceanside$106,42157,844
92027Escondido$93,33856,840
91913Chula Vista$129,41255,923
92056Oceanside$102,57053,750
92026Escondido$104,56152,797
92129San Diego$152,62652,415
92078San Marcos$120,26852,347
92127San Diego$179,22052,274

Data Sources & Citations

The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:

  • United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
  • United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS