What is the area code for Grass Valley, CA?

Grass Valley uses 2 area codes: 530 and 837. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.

What time zone is Grass Valley in?

Grass Valley is in the Pacific time zone.

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Grass Valley, California (population 14,035) uses area codes 530 and 837.

Area code530

Area code837

Time zonePacific

Local time now…

Grass Valley has no telephone exchange of its own in NANPA records; it is served by the Nevada City exchange about 4.7 km away.

Grass Valley and nearby cities in area code 530

10 prefixes are assigned to the Nevada City exchange: 10% mobile, 30% VoIP and cable, 60% landline.

Area code	Prefixes serving Grass Valley	Main carriers in this code
530	9	AT&T (Pacific Bell), Onvoy (Sinch), AT&T Mobility
837	1	Onvoy (Sinch), Exiant Communications, Wide Voice

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

What is the area code for Grass Valley, CA?: Grass Valley uses 2 area codes: 530 and 837. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is Grass Valley in?: Grass Valley is in the Pacific time zone.