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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.

Area code 206: NANPA facts
ItemValue
StateWashington
In service sinceJanuary 1, 1947
OverlayYes, with 564
Time zonePacific
Local calls within the codeten digits (area code plus number)
Assigned central office codes752
Rate centers with codes5
Carriers holding codes52
Pooled codes414
Codes assigned since 202068
Relief planning in progressNo

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.

Most populous places with 206 exchanges
PlacePopulation (2024)Area codesExchangesCarriers
Seattle, WA780,99520667648
Des Moines, WA33,207206, 2534412
Bainbridge Island, WA24,6182062812

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.

Largest code holders in area code 206
Carrier (NANPA operating company)ExchangesShare
Qwest Corporation24332%
T-mobile USA, INC.9513%
Onvoy, LLC - Wa729.6%
New Cingular Wireless PCS, LLC587.7%
Cellco Partnership d/b/a Verizon Wireless - Wa577.6%
Level 3 Communications, LLC - Wa344.5%
Mcimetro Access Transmission Services LLC334.4%
Electric Lightwave LLC d/b/a Allstream253.3%
Spok, INC.233.1%
Teleport Communications America, LLC - Wa222.9%
Metropcs, INC.81.1%
Bandwidth.com CLEC, LLC - Wa70.93%

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 centers in area code 206 by assigned codes
Rate center (NANPA)PlaceCodes
SEATTLESeattle, WA676
BAINBDG ISBainbridge Island, WA28
DES MOINESDes Moines, WA21
RICHMNDBCHnot matched19
VASHONnot matched8

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.

Area code 206: central office codes by decade assigned
Decade assignedExchangesShare
2000s4620%
2010s11450%
2020s6830%

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.