Alameda County

geographical name

county in western California bordering on San Francisco Bay and containing the cities of Oakland and Berkeley

Browse Nearby Words

Cite this Entry

“Alameda County.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Alameda%20County. Accessed 1 Sep. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!