Area code 206
Where 206 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
- WA
- In service
- 1947
- Assigned codes
- 752of 800 possible
- Carriers
- 52
Area code 206 at a glance
NANPA lists 206 as an in-service geographic area code for Washington, first put into service on January 1, 1947. It is an overlay: 206 and 564 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 Seattle, Bainbridge Island, and Des Moines. By population, its largest named places are Seattle, Des Moines, and Bainbridge Island.
| Item | Value |
|---|---|
| State | Washington |
| In service since | January 1, 1947 |
| Overlay | Yes, with 564 |
| Time zone | Pacific |
| Local calls within the code | ten digits (area code plus number) |
| Assigned central office codes | 752 |
| Rate centers with codes | 5 |
| Carriers holding codes | 52 |
| Pooled codes | 414 |
| Codes assigned since 2020 | 68 |
| Relief planning in progress | No |
Source: NANPA NPA report and utilized central office code file, both dated 10/01/2026.
Places served by 206
206 holds 21% of the 3,531 central office codes assigned in Washington, the 3rd most of the state's 6 codes. 3 Census places could be matched to rate centers with 206 exchanges; the most populous are Seattle (781,000), Des Moines (33,207), and Bainbridge Island (24,618). For a storefront or service area inside 206, the place pages show which prefixes are rated local there.
| Place | Population (2024) | Area codes | Exchanges | Carriers |
|---|---|---|---|---|
| Seattle, WA | 780,995 | 206 | 676 | 48 |
| Des Moines, WA | 33,207 | 206, 253 | 44 | 12 |
| Bainbridge Island, WA | 24,618 | 206 | 28 | 12 |
Population: Census Vintage 2024 estimates for the matched place. Exchanges and carriers: NANPA utilized code file.
How calls are dialed in 206
According to NANPA's dialing-plan data, local calls within 206 are dialed as ten digits (area code plus number) 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. NANPA's dialing-plan note for this code reads: "1+10-digit dialing permissible at service provider discretion"
Phone companies in area code 206
52 carriers hold the 752 central office codes assigned in 206. Qwest Corporation has the most, with 243 (32%). 414 of the codes (55%) 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 |
|---|---|---|
| Qwest Corporation | 243 | 32% |
| T-mobile USA, INC. | 95 | 13% |
| Onvoy, LLC - Wa | 72 | 9.6% |
| New Cingular Wireless PCS, LLC | 58 | 7.7% |
| Cellco Partnership d/b/a Verizon Wireless - Wa | 57 | 7.6% |
| Level 3 Communications, LLC - Wa | 34 | 4.5% |
| Mcimetro Access Transmission Services LLC | 33 | 4.4% |
| Electric Lightwave LLC d/b/a Allstream | 25 | 3.3% |
| Spok, INC. | 23 | 3.1% |
| Teleport Communications America, LLC - Wa | 22 | 2.9% |
| Metropcs, INC. | 8 | 1.1% |
| Bandwidth.com CLEC, LLC - Wa | 7 | 0.93% |
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 206 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. 206 has codes in 5 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 |
|---|---|---|
| SEATTLE | Seattle, WA | 676 |
| BAINBDG IS | Bainbridge Island, WA | 28 |
| DES MOINES | Des Moines, WA | 21 |
| RICHMNDBCH | not matched | 19 |
| VASHON | not matched | 8 |
206 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). 752 are assigned in 206, 94% of 800. 68 were assigned in 2020 or later.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 46 | 20% |
| 2010s | 114 | 50% |
| 2020s | 68 | 30% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Using area code 206 for business calls
Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.
If you already have a number in area code 206, 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 206?
206 is a geographic area code in Washington. Places with the most assigned exchanges include Seattle, Bainbridge Island, and Des Moines.
What time zone is area code 206 in?
NANPA lists 206 in the Pacific time zone.
When did area code 206 go into service?
NANPA records an in-service date of January 1, 1947.
Is 206 an overlay area code?
Yes. It shares its territory with 564.
Can my business get a 206 phone number?
Callata includes up to 3 local numbers on its $99/month plan (5 users included). Which 206 numbers are open depends on carrier inventory when you choose, and you can port an existing number for free.