Alameda County, California

Alameda County: County in California, United States

About

Alameda County is a county located in the U.S. state of California. As of the 2010 census, the population was 1,510,271 and a population density of 710 people per km². After 10 years in 2020 county had an estimated population of 1,662,323 inhabitants. Its county seat is Oakland. The county was created 170 years ago in 1853.

Alameda County locator map
Location of Alameda County on California map.

Quick Facts about Alameda County

Population : 1,662,323 (2020)
Country : United States of America
State : California (United States)
Twitter username : AlamedaCounty
Phone Area Codes : 510, 925
Area : 2127 km2
Water as percent of area : 10.02%
Land as percent of area : 89.98%
Named for : Rancho Arroyo de la Alameda
Altitude : 331 feet / 101 meters
Capital : Oakland
Establishment : March 03, 1853
Time Zone : Pacific Time Zone
Local time : 21:39:49 (30th November 2023)
Density : 782 Pop. per km² as of 2020
Population growth : 9.15% (2010-2020)
Weather : 41℉ Partly Cloudy 7-days weather
Seal of Alameda County  California seal image
Seal of Alameda County California
Seal of Alameda County  California seal image

Geography

Alameda County is located at 37°39'2"N 121°55'4"W (37.6505500, -121.9178900). It has 5 neighbors: Contra Costa County, San Joaquin County, San Mateo County, Santa Clara County and Stanislaus County.

Alameda County map

The largest city of Alameda County is Oakland with a population of 424,891. Other cities include, Fremont population 234,569, Hayward population 157,966, Berkeley population 122,726 and Livermore population 91,617. See all Alameda County cities & populated places.

Alameda County Populated Places (more)

Cities, towns, neighborhoods & other populated places in Alameda County.

City Name Population Title
Oakland 424,891 The third most populous city in California, Oakland is a major center for business, manufacturing, and culture.
Fremont 234,569 The fifth most populous city in California.
Hayward 157,966 The seventh most populous city in Alameda County, California.
Berkeley 122,726 The fourth most populous city in Alameda County, California.
Livermore 91,617 A city in Alameda County, California.
San Leandro 89,161 A city in Alameda County, California.
Pleasanton 80,247 A city in Alameda County, California.
Alameda 78,841 A city in Alameda County, California.
Union City 74,107 A city in Placer County, California.
Dublin 66,936 The most populous city in Alameda County, California.
Castro Valley 61,388 A city in Alameda County, California.
Newark 49,699 A city in Alameda County, California.
Ashland 21,925 City in Boyd County, Kentucky, United States
Albany 20,031 City in Alameda County, California, United States
Cherryland 14,728 Census designated place
Emeryville 11,875 City in the United States state of California

Weather

Alameda County forecast: Partly cloudy, with a low around 41. West wind 5 to 8 mph. more

Alameda County has 5 neighbours.

  • Oakland

Demographics

The population of Alameda County increased by 9.15% in 10 years.

Year Population % Change Method
1900 130,197 - estimation process
1910 246,131 47.1% estimation process
2010 1,510,271 83.7% census
2011 1,530,915 1.35% estimation process
2012 1,553,764 1.47% estimation process
2013 1,579,593 1.64% estimation process
2014 1,607,792 1.75% estimation process
2015 1,634,538 1.64% estimation process
2016 1,650,950 0.99% estimation process
2017 1,660,196 0.56% estimation process
2018 1,666,756 0.39% estimation process
2019 1,671,329 0.27% estimation process
2020 1,662,323 -0.54% estimation process

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People born in Alameda County (56)

People born in Alameda County, including actor, producer, director, and screenwriter Vin Diesel, football player and coach Keith Millard, murder victim Meredith Hunter, .

List

  • Thomas Pridgen (American musician) he was born in 23/11/1983
  • Will Forte (American actor, comedian, writer) he was born in 17/06/1970
  • John Brillhart (American mathematician) he was born in 13/11/1930
  • Greig McRitchie (American composer) he was born in 28/09/1914
  • John Seely (American composer) he was born in 23/08/1923
  • Jonathan Hall Kovacs (child actor) he was born in 20/10/1969
  • Michael Edwards (actor) he was born in 24/11/1944
  • Mike Bouchet (American painter, draftsman, and installation artist) he was born in 01/01/1970
  • Adam Steltzner (American aerospace engineer) he was born in 10/06/1963
  • Alli Abrew (American football player) he was born in 03/07/1974
  • Bob Burton (American basketball coach) he was born in 30/09/1945
  • Bridgid Coulter (American actress) she was born in 02/08/1968
  • Charles Scott Haley (American mining author of Gold placers of California) he was born in 08/11/1884
  • Christopher DeFaria (American child actor/singer; now production manager and film producer) he was born in 20/05/1959
  • Cordell Crockett (American musician) he was born in 21/01/1965
  • Darian Leader (British psychoanalyst) he was born in 01/01/1965
  • David Immerglück (American musician) he was born in 03/05/1961
  • Dudley Manlove (actor, radio announcer (1914-1996)) he was born in 11/06/1914

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.
San Diego County 3,332,427 San Diego County, founded in 1850, is one of 58 counties in the US state of California.
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
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
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.