North American Numbers Source-cited · ownership disclosed
Area code
369
In service
United States · since 2023

Santa Rosa / North Bay (overlay)

Area code 369 is an all-services overlay of area code 707, serving the same North Bay and North Coast territory. It went into service on February 1, 2023.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Santa Rosa / North Bay (overlay)
Type
geographic
Status
in service
In service since
2023
Projected exhaust
2070 Q2

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 369 is

Same as 707: North Bay and North Coast counties (Sonoma, Napa, Solano, part of Marin, Mendocino, Lake, Humboldt, Del Norte, Trinity)..

Communities served wholly or partly by 369:

Santa RosaVallejoNapaPetalumaFairfieldEurekaUkiah

Shares the 707 service area.

B · Relationships

How it relates to other codes

The codes 369 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Overlay · 2023 707 Santa Rosa / North Bay All-services overlay of the 707 numbering plan area, in service February 1, 2023.
What's changing. Active overlay of 707 since February 1, 2023; ten-digit dialing required (re-check against NANPA).
C · History

How 369 got here

2022
NANP Administrator set February 1, 2023 as the 369 overlay implementation date.
Source: Wikipedia
2023-02-01
Area code 369 became an active overlay of 707 (re-check against NANPA).
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
65
Prefixes available
735
Thousands-blocks assigned
364

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 369 with another code →
Sources
Wikipedia ↗
Area codes 707 and 369
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.