Alameda County · California
Oakland, CA area codes and time zone
Quick answer
Oakland is served by area codes 415, 510, 628, 650, 707, 916, 925, keeps PST time (GMT-8), and sits in county FIPS 06001.
- Area codes
- 415 · 510 · 628 · 650 · 707 · 916 · 925Within 25 miles of the city centre
- Time zone
- PSTAmerica/Los_Angeles
- UTC offset
- GMT-8PDT in summer (UTCGMT-7)
- County FIPS
- 06001Alameda County
Dialling from and to Oakland
What this means when you pick up the phone.
Because more than one code covers this area, ten-digit dialling applies for local calls: area code plus number, every time. From abroad, dial +1 then the ten digits.
How Oakland came to have several area codes
Why one city can carry several codes.
Area codes are assigned to geography, then exhausted as demand grows. Oakland — population about 437k — is covered by codes 415, 510, 628, 650, 707, 916, 925, drawn from within 25 miles of the city centre. Because these 7 codes serve the same footprint, they are overlays: the number pool ran low and a new code was layered on top rather than splitting the city apart. All ten digits are required for every local call.
More Oakland data
Other Oakland datasets on this site.
- Oakland population and income
- Oakland sales tax rate
- Oakland property tax
- Oakland cost of living
- Oakland home values and rent
- Oakland crime rates
- Oakland public schools
- Oakland weather normals
- Oakland commute times
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