San Diego County, California
San Diego County: founded in 1850, is one of 58 counties in the US state of California.
About
San Diego County is a county located in the U.S. state of California. As of the 2010 census, the population was 3,095,313 and a population density of 264 people per km². After 10 years in 2020 county had an estimated population of 3,332,427 inhabitants. Its county seat is San Diego. The county was created 176 years ago in 1849.
County Snapshot
San Diego County at a glance
San Diego County currently has 38 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
38
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
California counties
58
Open related pagesLargest city
San DiegoPopulation 1,422,420
Top linked places
Quick Facts about San Diego County
| Population | 3,332,427 (2020) |
| Country | United States of America |
| State | California (United States) |
| Twitter username | sandiegocounty |
| Area | 11721 km2 |
| Water as percent of area | 7.05% |
| Land as percent of area | 92.95% |
| Latitude & Longitude | 33.0282,-116.7702 |
| Named for | San Diego |
| Altitude | 6,535 feet / 1992 meters |
| Capital | San Diego |
| Establishment | January 01, 1850 |
| Time Zone | Pacific Time Zone |
| Local time | 17:25:24 (17th April 2026) |
| Density | 284 Pop. per km² as of 2020 |
| Population growth | 7.12% (2010-2020) |
| Weather | 48℉ Mostly Cloudy 7-days weather |
Geography
San Diego County is located at 33°1'42"N 116°46'13"W (33.0282000, -116.7702100). It has 4 neighbors: Estado de Baja California, Imperial County, Orange County and Riverside County.
San Diego County map
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The largest city of San Diego County is San Diego with a population of 1,422,420. Other cities include, Chula Vista population 272,979, Oceanside population 174,648, Escondido population 149,943 and Carlsbad population 115,599. See all San Diego County cities & populated places.
San Diego County Populated Places (more)
Cities, towns, neighborhoods & other populated places in San Diego County.
| City Name | Population | Title |
|---|---|---|
| San Diego | 1,422,420 | The eighth most populous city in the United States and the center of the San Diego metropolitan area. |
| Chula Vista | 272,979 | The second most populous city in San Diego County, California. |
| Oceanside | 174,648 | The second most populous city in San Diego County, California. |
| Escondido | 149,943 | The second most populous city in San Diego County, California. |
| Carlsbad | 115,599 | The most populous city in San Diego County, California. |
| El Cajon | 102,401 | The second most populous city in San Diego County, California. |
| Vista | 100,636 | The most populous city in San Diego County, California. |
| San Marcos | 97,477 | The second most populous city in San Diego County, California. |
| Encinitas | 62,671 | The most populous city in San Diego County, California. |
| National City | 61,394 | The most populous city in San Diego County, California. |
| La Mesa | 59,724 | The most populous city in San Diego County, California. |
| Santee | 57,770 | A city in San Diego County, California. |
| Poway | 49,246 | A city in San Diego County, California. |
| La Presa | 34,169 | Census designated place |
| Fallbrook | 30,534 | Unincorporated community in San Diego County, California, United States |
| Spring Valley | 28,205 | Town in San Diego County, California, United States |
Weather
Mostly cloudy, with a low around 48. Southeast wind 0 to 5 mph.
7-Day ForecastDemographics
The population of San Diego County increased by 7.12% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 3,095,313 | - | census |
| 2011 | 3,137,156 | 1.33% | estimation process |
| 2012 | 3,174,335 | 1.17% | estimation process |
| 2013 | 3,209,768 | 1.1% | estimation process |
| 2014 | 3,248,877 | 1.2% | estimation process |
| 2015 | 3,280,850 | 0.97% | estimation process |
| 2016 | 3,306,089 | 0.76% | estimation process |
| 2017 | 3,321,237 | 0.46% | estimation process |
| 2018 | 3,333,861 | 0.38% | estimation process |
| 2019 | 3,338,330 | 0.13% | estimation process |
| 2020 | 3,332,427 | -0.18% | estimation process |
People born in San Diego County (15)
People born in San Diego County, including US actress Kristen Dalton, tennis player James Brink, writer Patricia Geary, .
More notable people
- Bob Biggs (American football player and coach, Canadian football player) he was born in 20/02/1951
- Brian Leung (Asian American writer)
- Ann Millikan (American composer) she was born in 10/06/1963
- James C. Swan he was born in 10/12/1963
- Taylor Steele (surf film producer and director) he was born in 07/06/1982
- Stephen the Levite (musician) he was born in 02/07/1981
- Ash Thorp he was born in 01/01/1983
- Dave Ross (American-football player (1938-)) he was born in 01/02/1938
- Franc Ross (actor) he was born in 06/04/1954
- Rebecca Boldrick (David Hoggs' mother)
- Randy Crenshaw (American actor and singer) he was born in 24/12/1955
- Carrie Cabelka (American political advisor) she was born in 27/04/1976
California Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Los Angeles County | 9,943,046 | County in California, United States of America |
| Los Angeles | 3,970,219 | The second most populous city in the United States and the center of the Los Angeles metropolitan area. |
| Orange County | 3,166,857 | County in California, United States |
| Riverside County | 2,489,188 | County in California, United States |
| San Bernardino County | 2,189,183 | County in California, United States |
| Santa Clara County | 1,907,105 | County in California, United States |
| Alameda County | 1,662,323 | County in California, United States |
| Sacramento County | 1,559,146 | County in California, United States |
| San Diego | 1,422,420 | The eighth most populous city in the United States and the center of the San Diego metropolitan area. |
| Laguna | 1,370,232 | A city located in Orange County, California. |
| Contra Costa County | 1,152,333 | County in California, United States |
| San Jose | 1,013,616 | The tenth most populous city in the United States and the center of the San Jose metropolitan area. |
| Fresno County | 1,000,918 | County in California, United States |
| Kern County | 901,362 | This county is located in the southern San Joaquin Valley, extending eastward over the Tehachapi Mountains to the Mojave Desert. |
| San Francisco County | 866,606 | County, coextensive with the city of San Francisco, California, United States |
| San Francisco | 866,606 | The seventeenth most populous city in the United States and the center of the San Francisco Bay Area. |