Area code 510

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Map of California area codes in blue (and border states) with 510 in red

North American area code 510 is a California telephone area code which covers eastern Bay Area cities such as Hayward, Castro Valley, San Leandro, San Lorenzo, Alameda, Berkeley, Oakland, Richmond, Union City, and Fremont.

[edit] See also

• List of California area codes
• List of North American area codes
• North American Numbering Plan
• North American Numbering Plan Administration
• Map

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