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Berkeley, CA Area Codes

Berkeley, California (population 121,911) uses area codes 510 and 341.

Area code510
Area code341
Time zonePacific
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Berkeley has no telephone exchange of its own in NANPA records; it is served by the Richmond exchange about 11.1 km away.

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Berkeley and nearby cities in area code 510

Carriers with Berkeley numbers

63 prefixes are assigned to the Richmond exchange: 22% mobile, 38% VoIP and cable, 40% landline.

CarrierPrefixes
AT&T (Pacific Bell)15
Bandwidth7
T-Mobile6
Lumen (Level 3)5
Onvoy (Sinch)5
Metropcs4
AT&T Mobility4
Verizon Wireless4

Area codes used in Berkeley

Area codePrefixes serving BerkeleyMain carriers in this code
51053AT&T (Pacific Bell), AT&T Mobility, T-Mobile
34110Fractel, Onvoy (Sinch), AT&T Mobility

Berkeley phone number prefixes

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

Nearby cities in area code 510

Questions

What is the area code for Berkeley, CA?
Berkeley 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 Berkeley in?
Berkeley is in the Pacific time zone.