Area Code 369
California
Area code 369 serves California, primarily Santa Rosa, in the Pacific Time (PT) time zone. It is an overlay area code sharing territory with area code 707.
Overlay Area Code
This area code is part of an overlay region, meaning the same geographic area is served by multiple area codes. Overlay codes were introduced to meet growing demand for phone numbers without requiring existing customers to change their numbers.
This area code shares its geographic region with: area code 707 (Santa Rosa).
In service since: 01-Feb-2023
Demographics & Economics
- Total Population
- 1,632,822
- Population Density
- 36 people/sq mibelow U.S. average (U.S.: 93 people/sq mi)
- Median Household Income
- $73,313near U.S. median (U.S.: $75,144)
- Poverty Rate
- 13.5%above U.S. average (U.S.: 11.5%)
- Unemployment Rate
- 6.2%above U.S. average (U.S.: 3.6%)
- Education Attainment
- Bachelor's Degree+29.4%below U.S. average (U.S.: 33.7%)High School or Lower28.5%
Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.
See how this area code compares to all US area codes in the income ranking and density ranking.
Time Zone
- Pacific Time (PT)
NANPA Relief Status
According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.
Source: NANPA NPA Relief Planning Reports · See all relief planning statuses
Current Time
Prefix Utilization
Geographic Coverage
State
CA
Major Cities
- Santa Rosa
- Vallejo
- Fairfield
- Vacaville
- Napa
- Petaluma
- Rohnert Park
- Benicia
- Eureka
- Windsor
- American Canyon
- Dixon
- Arcata
- McKinleyville
- Clearlake
- Ukiah
- Fortuna
- Healdsburg
- Sonoma
- Rio Vista
- Cloverdale
- Larkfield-Wikiup
- University of California-Davis
- Cotati
and 123 more cities
Historical Timeline of Area Code 369
Area code 369 was originally approved as a geographic split of area code 707 in 1999, but the split was cancelled in 2000 when thousand-block number pooling conservation measures succeeded. Twenty-three years later, 369 was revived and implemented as an all-services overlay on February 1, 2023, after the 707 NPA was declared in jeopardy with only 29 usable prefixes remaining out of 754 total. (Source: CPUC Decision 22-06-031)
Key milestones in the 707/369 story:
- 1959: Area code 707 created by split from 707, covering Solano County and north as California's 8th area code. (Source: NANPA PL-599)
- 1999: CPUC Decision D.99-12-049 approved a three-way split of 707 that would have created codes 369 and 627. This was the first time 369 was designated as an area code. (Source: CPUC Decision 22-06-031)
- 2000: CPUC Decision D.00-07-053 (July 20) cancelled the 369/627 split due to success of thousand-block number pooling conservation measures.
- 2007: CPUC Decision D.07-05-011 dismissed all pending 707 relief requests; NANPA rescinded jeopardy.
- 2021: NANPA Planning Letter PL-556 mandated 1+10-digit local dialing in 707 NPA effective July 15, 2022, due to the FCC's 988 National Suicide Prevention Hotline implementation. (Source: NANPA PL-599)
- 2022: January 4: NANPA declared a "jeopardy situation" for the 707 NPA with only 29 usable prefixes remaining out of 754 total. June 23: CPUC issued Decision 22-06-031 approving all-services distributed overlay, selecting 369 as the new code. August 1: NANPA Planning Letter PL-599 issued, setting the implementation schedule. (Source: CPUC Decision 22-06-031)
- 2023: February 1: Area code 369 put in service as overlay to 707 NPA. New customers may receive 369 numbers. May 4: First 369 prefix activated, 369-200 assigned to Dixon, California. (Source: NANPA PL-599)
The 23-year gap between the original split approval in 1999 and the overlay implementation in 2023 reflects the success of number conservation measures in the late 1990s and early 2000s, which extended the life of the 707 NPA by over two decades.
Regulatory History
The 707/369 area code overlay was shaped by four major CPUC regulatory decisions spanning 23 years, from the original split approval in 1999 through its cancellation, a period of stability, and the final overlay approval in 2022. NANPA Planning Letters PL-556 and PL-599 governed the implementation timeline. (Source: CPUC Decision 22-06-031)
| Year | Event | Docket | Regulatory Action & Impact |
|---|---|---|---|
| 1999 | Three-Way Split Approved | D.99-12-049 | CPUC approved a three-way split of 707 that would have created codes 369 and 627. This was the first time 369 was designated as an area code. (Source: CPUC) |
| 2000 | Split Cancelled | D.00-07-053 | CPUC cancelled the 369/627 split implementation on July 20, 2000, after thousand-block number pooling conservation measures proved sufficient to extend the life of the 707 NPA. |
| 2007 | Relief Requests Dismissed | D.07-05-011 | CPUC dismissed all pending 707 NPA relief requests. NANPA rescinded the jeopardy declaration, stabilizing the 707 NPA for another 15 years. |
| 2021 | 988 Dialing Mandate | NANPA PL-556 | NANPA mandated 1+10-digit local dialing in the 707 NPA effective July 15, 2022, required by the FCC's 988 Suicide and Crisis Lifeline transition. (Source: NANPA PL-599) |
| 2022 | Overlay Approved | D.22-06-031 | CPUC approved all-services distributed overlay for 707 NPA, selecting 369 as the new code. Only 29 usable prefixes remained out of 754 total. Jeopardy declared January 4, 2022. Implementation required within 6 months. (Source: CPUC Decision 22-06-031) |
| 2022 | Implementation Schedule Set | NANPA PL-599 | NANPA issued Planning Letter PL-599 setting the implementation schedule: customer education August 2022 through February 2023; in-service date February 1, 2023; test number 369-369-1369. (Source: NANPA PL-599) |
| 2023 | 369 Goes In Service | Area code 369 put in service on February 1, 2023 as overlay to 707 NPA. New customers may receive 369 numbers. First prefix activated: 369-200 (Dixon, May 4, 2023). (Source: CPUC Press Release) |
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 369).
| County | Population | Share |
|---|---|---|
| Sonoma, CA | 501,019 | 31.2% |
| Solano, CA | 471,260 | 29.3% |
| Napa, CA | 230,024 | 14.3% |
| Humboldt, CA | 132,015 | 8.2% |
| Mendocino, CA | 106,209 | 6.6% |
| Lake, CA | 69,642 | 4.3% |
| Marin, CA | 33,878 | 2.1% |
| Del Norte, CA | 27,240 | 1.7% |
| Yolo, CA | 22,971 | 1.4% |
| Sacramento, CA | 10,973 | 0.7% |
| Trinity, CA | 1,627 | 0.1% |
Area Code 369 Family Tree
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Area code 369 was originally assigned in 01-Feb-2023 to serve CA.
Call Context
This area code covers a metropolitan region in CA with moderate to high population density, centered on Santa Rosa and surrounding communities.
Nearby Area Codes
Area codes geographically closest to 369.
Other Area Codes in California
Area codes that also serve California, linked for easy comparison.