San Mateo County , California

San Mateo County: County in California, United States

San Mateo County, CA locator map
Location of San Mateo County, CA on California map.

About

San Mateo County is a county located in the U.S. state of California. As of the 2010 census, the population was 718,451 and a population density of 374 people per km². After 9 years in 2019 county had an estimated population of 766,573 inhabitants. Its county seat is Redwood City. The county was created 165 years ago in 1855.

San Mateo County has a total area of 740.93 square miles (1919 km2).

San Mateo County map

San Mateo County, CA Quick Facts

Population : 766,573 (2019)
Country : United States of America
State : California
Twitter username : sanmateoco
Area : 1919 km2
Water as percent of area : 39.48%
Land as percent of area : 60.52%
Named for : Matthew the Apostle
Altitude : 1,601 feet / 488 meters
Capital : Redwood City
Establishment : January 01, 1856
Time Zone : UTC−08:00
Local time : 14:22:42 (19th April 2021)
Density : 399 Pop. per km² as of 2019
Population growth : 6.28% (2010-2019)
Weather : 50℉ Mostly Clear 7-days weather

San Mateo County, CA has 4 neighbors .

  • Redwood City

The population of San Mateo County increased by 6.28% in 9 years.

Year Population Method
2010 718,451 census
2011 728,344 estimation process
2012 739,224 estimation process
2013 748,661 estimation process
2014 757,204 estimation process
2015 765,055 estimation process
2016 767,906 estimation process
2017 768,901 estimation process
2018 768,681 estimation process
2019 766,573 estimation process

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People born in San Mateo County, CA (13)

People born in San Mateo County, CA, including fencer Janice Romary, biotech analyst, biologist, businesswoman, and co-founder of 23andMe Anne Wojcicki, writer Nicholas Guild, you can see a list of people who born in San Mateo County, CA.

  • Jonah Blechman (American actor)
  • Aaron Rapoport (American photographer)
  • Anna Turner (U.S. radio and record producer)
  • J.B. Pritzker (American businessman, philanthropist, and 43rd Governor of Illinois)
  • Rich Gordon (American politician)
  • Sally Dryer (American actress)
  • Danny Barrett (American rugby union player (1990-))
  • Jordy Ranft (American storyboard artist, animator, director, producer, screenwriter, poet, performer and voice actor)
  • Emma Chamberlain (American YouTuber, Podcaster and TikToker)
  • Danya Taymor (Director Female)

San Mateo County, CA Populated Places (more)

Cities, Towns, Neighborhoods & Other Populated Places in San Mateo County, CA.

City Name Population Title
Daly City 106,280 City in San Mateo County, California, US
San Mateo 104,430 City in San Mateo County, California, United States
Redwood City 85,925 City in California, United States of America
South San Francisco 67,789 City in San Mateo County, California
San Bruno 42,807 City in San Mateo County, California, US
Pacifica 38,546 City in San Mateo County, California, USA
Menlo Park 34,698 City at the eastern edge of San Mateo County, in the San Francisco Bay Area of California
Foster City 33,901 City in San Mateo County, California, United States
Burlingame 30,889 City in the U.
San Carlos 30,185 City in San Mateo County, California, USA
East Palo Alto 29,314 City in San Mateo County, California, United States
Belmont 26,941 Town in Middlesex County, Massachusetts, United States
Millbrae 22,394 City in California
Half Moon Bay 12,932 City in San Mateo County, California
Hillsborough 11,387 City in California
Atherton 7,137 City in California

California Other Counties (more counties)

County Name Population Title
Los Angeles County 10,039,107 County in California, United States of America
Los Angeles 3,979,576 County seat of Los Angeles County, California; second largest city in the United States by population
San Diego County 3,338,330 San Diego County, founded in 1850, is one of 58 counties in the US state of California.
Orange County 3,175,692 County in California, United States
Riverside County 2,470,546 County in California, United States
San Bernardino County 2,180,085 County in California, United States
Santa Clara County 1,927,852 County in California, United States
Alameda County 1,671,329 County in California, United States
Sacramento County 1,552,058 County in California, United States
San Diego 1,423,851 City in San Diego County, California, United States, eighth largest city in the country by population
Laguna 1,370,232 Former census-designated place
Contra Costa County 1,153,526 County in California, United States
San Jose 1,021,795 County seat of Santa Clara County, California; tenth largest city in the United States by population
Fresno County 999,101 County in California, United States
City and County of San Francisco 883,869 Consolidated city-county in California, United States
San Francisco 881,549 Consolidated city-county in California, United States

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