Alameda County, California

Alameda County is a <a href="/facts/List_of_counties_in_California/xCj7sLrL">county</a> located in the U.S. state of <a href="/facts/California/zLW2vdQJ">California</a>. As of the <a href="/facts/2020_United_States_census/dTEm5TRr">2020 census</a>, the population was 1,682,353, making it the 7th-most populous county in the state and <a href="/facts/List_of_the_most_populous_counties_in_the_United_States/BfdVRIQV">21st</a> most populous nationally. The <a href="/facts/County_seat/ItAWPoWw">county seat</a> is <a href="/facts/Oakland%2c_California/84tfrNlx">Oakland</a>. Alameda County is in the <a href="/facts/San_Francisco_Bay_Area/MG53NJ36">San Francisco Bay Area</a>, occupying much of the <a href="/facts/East_Bay_(San_Francisco_Bay_Area)/I0wDzgD6">East Bay</a> region.
The <a href="/facts/Spanish_language/95BgYNfv">Spanish</a> word alameda means either "a grove of poplars...or a tree lined street". The name was originally used to describe the Arroyo de la Alameda; the <a href="/facts/Willow/F66Xvslm">willow</a> and <a href="/facts/Sycamore/wfSvwFja">sycamore</a> trees along the banks of the river reminded the early Spanish explorers of a road lined with trees. Although a strict translation to English might be "Poplar Grove Creek", the name of the principal stream that flows through the county is now simply "<a href="/facts/Alameda_Creek/KTIx9JHJ">Alameda Creek</a>".
Alameda County is part of the <a href="/facts/San_Francisco%25E2%2580%2593Oakland%25E2%2580%2593Berkeley%2c_CA_Metropolitan_Statistical_Area/MG53NJ36">San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area</a>, and the <a href="/facts/San_Jose%25E2%2580%2593San_Francisco%25E2%2580%2593Oakland%2c_CA_Combined_Statistical_Area/MG53NJ36">San Jose–San Francisco–Oakland, CA Combined Statistical Area</a>.

Alameda County, California open-in-new

Alameda County, California