Everything you need to know about area code 510 in California
QUICK FACTS
California
Pacific Time Zone
Split from existing code
Estimated residents served
California
Primary code for this region
ABOUT THIS AREA CODE
Area code 510 covers the East Bay region of the San Francisco Bay Area, including Oakland, Berkeley, and Fremont. It serves a diverse and culturally vibrant region across the bay from San Francisco.
Phone numbers with the 510 area code follow the format (510) XXX-XXXX, where the next three digits represent the local exchange. The 510 area code is part of the North American Numbering Plan (NANP) and is regulated by the Federal Communications Commission (FCC).
If you receive a call from a 510 number that you don't recognize, you can search it using the lookup tool above. While the 510 area code legitimately serves millions of residents and businesses in the Oakland area, scammers sometimes spoof local area codes to make their calls appear more trustworthy. Always verify unfamiliar numbers before returning calls or sharing personal information.
The Oakland region served by area code 510 is one of the most significant areas in California. As a primary geographic code, 510 has been the main identifier for this region since it was introduced in 1991.
For detailed information about any phone number in the 510 area code, including owner identification, carrier data, and spam reports, use our search tool above or visit one of our trusted lookup providers.
CITIES & COMMUNITIES
SPAM & SCAM ALERTS
These are frequently reported scam patterns from phone numbers using the 510 area code. Scammers often spoof area codes, so a call appearing to come from 510 may originate elsewhere.
Callers offer free medical devices or insurance plans to collect your Medicare ID and personal health information for identity theft.
You are told you have won a prize but must pay taxes or fees upfront. Legitimate sweepstakes never require advance payment.
Fake collectors threaten legal action over debts you don't owe. Real collectors must provide written validation within 5 days of first contact.
Stay Safe: Never share personal information with incoming callers. If suspicious, hang up and search the number above.
FREQUENTLY ASKED QUESTIONS
Area code 510 serves Oakland, California. Area code 510 covers the East Bay region of the San Francisco Bay Area, including Oakland, Berkeley, and Fremont. It serves a diverse and culturally vibrant region across the bay from San Francisco.
Area code 510 is in the Pacific timezone. Calls from 510 numbers originate from the Oakland region.
Not necessarily. Area code 510 serves many people in Oakland. However, scammers can spoof any area code. If you receive a suspicious call from a 510 number, search it above before calling back.
Area code 510 was created in 1991. It serves as the primary geographic code for its region.
RELATED AREA CODES
WHO CALLED ME
If you received an unknown call from a 510 number, use our dedicated lookup page to identify the caller and check for scam reports.
Who Called Me From 510? →