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 171 years ago in 1853.
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 : | 00:50:47 (22nd February 2025) |
| Density : | 782 Pop. per km² as of 2020 |
| Population growth : | 9.15% (2010-2020) |
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
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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 |
- Official Website
Official website of Alameda County
Alameda County has 5 neighbours.
- Contra Costa County county in California, United States
- San Joaquin County county in California, United States
- San Mateo County county in California, United States
- Santa Clara County county in California, United States
- Stanislaus County county in California, United States
- 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. |
