Area code 369
Where 369 is, how it is dialed, which carriers hold its numbers and how many of its codes are in use, from NANPA's 10/01/2026 files.
- State
- CA
- In service
- 2023
- Assigned codes
- 51of 800 possible
- Carriers
- 13
Where area code 369 is
369 is one of 41 geographic area codes serving California; NANPA records its in-service date as February 1, 2023. It is an overlay: 369 and 707 cover the same territory, so neighbors on the same street can have different area codes. It is in the Pacific time zone. The places with the most assigned exchanges include Santa Rosa, Dixon, Healdsburg, Sonoma, and Benicia. By population, its largest named places are Santa Rosa, Vallejo, Vacaville, Napa, and Benicia.
| Item | Value |
|---|---|
| State | California |
| In service since | February 1, 2023 |
| Assigned by NANPA | June 23, 2022 |
| Overlay | Yes, with 707 |
| Parent area code (NANPA) | 707 |
| Time zone | Pacific |
| Local calls within the code | 1 plus ten digits |
| Assigned central office codes | 51 |
| Rate centers with codes | 32 |
| Carriers holding codes | 13 |
| Pooled codes | 49 |
| Codes assigned since 2020 | 51 |
| Relief planning in progress | No |
Source: NANPA NPA report and utilized central office code file, both dated 10/01/2026.
Cities and towns in area code 369
369 holds 0.23% of the 22,087 central office codes assigned in California, the 38th most of the state's 41 codes. 18 Census places could be matched to rate centers with 369 exchanges; the most populous are Santa Rosa (178,000), Vallejo (123,000), Vacaville (104,000), and Napa (76,921). For a storefront or service area inside 369, the place pages show which prefixes are rated local there.
| Place | Population (2024) | Area codes | Exchanges | Carriers |
|---|---|---|---|---|
| Santa Rosa, CA | 177,524 | 369, 707 | 154 | 26 |
| Vallejo, CA | 123,475 | 369, 707 | 51 | 15 |
| Vacaville, CA | 103,994 | 369, 707 | 38 | 12 |
| Napa, CA | 76,921 | 369, 707 | 44 | 16 |
| Benicia, CA | 26,477 | 369, 707 | 23 | 11 |
| Windsor, CA | 25,846 | 369, 707 | 11 | 7 |
| Eureka, CA | 25,412 | 369, 707 | 38 | 15 |
| Dixon, CA | 20,296 | 369, 707 | 10 | 9 |
| Arcata, CA | 18,748 | 369, 707 | 11 | 4 |
| Ukiah, CA | 16,067 | 369, 707 | 23 | 10 |
| Fortuna, CA | 12,114 | 369, 707 | 6 | 5 |
| Healdsburg, CA | 11,231 | 369, 707 | 10 | 6 |
| Sonoma, CA | 10,606 | 369, 707 | 18 | 11 |
| Crescent City, CA | 6,209 | 369, 707 | 9 | 6 |
| Lakeport, CA | 5,104 | 369, 707 | 12 | 7 |
Population: Census Vintage 2024 estimates for the matched place. Exchanges and carriers: NANPA utilized code file.
Dialing 369 numbers
According to NANPA's dialing-plan data, local calls within 369 are dialed as 1 plus ten digits and toll calls as 1 plus ten digits. Ten-digit local dialing means the area code is part of how customers save and recognize your number, so print it in full everywhere.
Who holds 369 exchanges
13 carriers hold the 51 central office codes assigned in 369. New Cingular Wireless PCS, LLC has the most, with 11 (22%). 49 of the codes (96%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. Numbers can move between carriers through porting, so a code's holder tells you where the block started, not where every number lives now.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| New Cingular Wireless PCS, LLC | 11 | 22% |
| T-mobile USA, INC. | 9 | 18% |
| Onvoy, LLC - CA | 8 | 16% |
| Commio, LLC | 7 | 14% |
| Wide Voice, LLC - CA | 4 | 7.8% |
| Cellco Partnership d/b/a Verizon Wireless - CA | 3 | 5.9% |
| Shelcomm | 2 | 3.9% |
| Onvoy Spectrum, LLC | 2 | 3.9% |
| Boost Subscriberco L.l.c. | 1 | 2.0% |
| Teleport Communications America, LLC - CA | 1 | 2.0% |
| Metropcs, INC. | 1 | 2.0% |
| Paetec Itel, LLC | 1 | 2.0% |
Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.
Where 369 numbers are rated
NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 369 has codes in 32 rate centers. The table lists the rate centers with the most codes, with the matching Census place where the abbreviation could be matched.
| Rate center (NANPA) | Place | Codes |
|---|---|---|
| SANTA ROSA | Santa Rosa, CA | 10 |
| FRFLD-SUIS | not matched | 3 |
| LOWER LAKE | not matched | 3 |
| DIXON | Dixon, CA | 2 |
| MIRANDA | not matched | 2 |
| HEALDSBURG | Healdsburg, CA | 2 |
| SONOMA | Sonoma, CA | 2 |
| BENICIA | Benicia, CA | 2 |
| EUREKA | Eureka, CA | 2 |
| BRIDGEVL | not matched | 1 |
| CLERLAOAKS | not matched | 1 |
| GUERNEVL | not matched | 1 |
| TRINIDAD | Trinidad, CA | 1 |
| NAPA | Napa, CA | 1 |
| UKIAH | Ukiah, CA | 1 |
| VALLEJO | Vallejo, CA | 1 |
| VACAVILLE | Vacaville, CA | 1 |
| WINDSOR | Windsor, CA | 1 |
| ARCATA | Arcata, CA | 1 |
| POINTARENA | Point Arena, CA | 1 |
| CRESCENTCY | Crescent City, CA | 1 |
| LAKEPORT | Lakeport, CA | 1 |
| FORTUNA | Fortuna, CA | 1 |
| PTLM SWIFT | not matched | 1 |
| PTLM MAIN | not matched | 1 |
Top 25 of 32 rate centers.
369 code assignments over time
An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 51 are assigned in 369, 6.4% of 800. 51 were assigned in 2020 or later.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2020s | 51 | 100% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Using area code 369 for business calls
Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.
If you already have a number in area code 369, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.
Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.
Frequently asked questions
Where is area code 369?
369 is a geographic area code in California. Places with the most assigned exchanges include Santa Rosa, Dixon, Healdsburg, and Sonoma.
What time zone is area code 369 in?
NANPA lists 369 in the Pacific time zone.
When did area code 369 go into service?
NANPA records an in-service date of February 1, 2023. The code was assigned on June 23, 2022.
Is 369 an overlay area code?
Yes. It shares its territory with 707.
Can my business get a 369 phone number?
Callata includes up to 3 local numbers on its $99/month plan (5 users included). Which 369 numbers are open depends on carrier inventory when you choose, and you can port an existing number for free.