California · Pacific Time
369 Area Code
Area code 369 is in California, serving north Bay wine country and the North Coast of California, from Vallejo to Crescent City. It is in the Pacific Time zone. It shares its territory with overlay code 707, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 369 area code?
369 is a California area code covering north Bay wine country and the North Coast of California, from Vallejo to Crescent City. In the wider directory it sits in the West region.
Cities in the 369 area code
- Santa Rosa
- Vallejo
- Fairfield
- Vacaville
- Napa
- Petaluma
- Rohnert Park
- Eureka
- Benicia
- Ukiah
- Healdsburg
- Arcata
- Crescent City
Counties served by 369
Sonoma County, Solano County, Napa County, Humboldt County, Mendocino County, Lake County and Del Norte County.
369 overlay codes and dialing
The 369 territory is covered by an overlay of 2 area codes: 369, 707. All of them serve the same geographic area, and the original code is 707. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 369 area code
369 went into service on February 1, 2023 as an overlay of 707, relieving number exhaustion in the Santa Rosa area. Rather than splitting the region, the overlay lets existing customers keep their numbers while new lines draw from the added code. Learn more in our overlay guide.
Is 369 a scam or spam risk?
369 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 369 number on your screen is no guarantee the caller is in Santa Rosa, CA or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other California area codes
Explore more
See every code in California, compare codes across the West region, or view all Pacific Time codes. You can also browse the 3XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
369 area code FAQ
Where is the 369 area code?
The 369 area code is in California, covering north Bay wine country and the North Coast of California, from Vallejo to Crescent City, in the West region.
What cities are in the 369 area code?
Cities in the 369 area code include Santa Rosa, Vallejo, Fairfield, Vacaville, Napa, Petaluma, Rohnert Park, Eureka, Benicia and Ukiah.
What time zone is 369 in?
369 is in the Pacific Time zone.
What is the overlay for the 369 area code?
369 shares its territory with 707. Both codes (369, 707) serve the same area, so 10-digit dialing is required for every call.
When did the 369 area code start?
369 went into service on February 1, 2023 as an overlay of 707.
Do I have to dial 10 digits for 369?
Yes. Because 369 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 369 a toll-free or premium code?
No. 369 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.