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Oakland, CA Area Codes

Oakland, California (population 440,838) uses area codes 510 and 341.

Area code510
Area code341
Time zonePacific
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Oakland and nearby cities in area code 510

Carriers with Oakland numbers

459 prefixes are assigned to the Oakland exchange: 25% mobile, 22% VoIP and cable, 53% landline.

CarrierPrefixes
AT&T (Pacific Bell)158
AT&T Mobility42
T-Mobile37
Verizon Wireless36
Metropcs27
Onvoy (Sinch)24
Verizon Business (MCImetro)22
Lumen (Level 3)20

Area codes used in Oakland

Area codePrefixes serving OaklandMain carriers in this code
510416AT&T (Pacific Bell), AT&T Mobility, T-Mobile
34143Fractel, Onvoy (Sinch), AT&T Mobility

Oakland phone number prefixes

Numbers starting with these first six digits were originally assigned to the Oakland exchange.

Nearby cities in area code 510

Questions

What is the area code for Oakland, CA?
Oakland uses 2 area codes: 510 and 341. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is Oakland in?
Oakland is in the Pacific time zone.