206 Area Code

Area Code 206 Location: Washington

Area code 206 covers Seattle and its innermost suburbs. This includes suburbs such as Shoreline and Lake Forest Park; Mercer, Bainbridge, and Vashon Islands; and portions of metropolitan Seattle from Des Moines to Woodway.

Counties Served by Area Code 206:

• King County (implicit, as Eastside is mentioned)

Major Cities in the 206 Service Area:

• Seattle

Other Cities and Towns:

• Bainbridge Island
• Des Moines
• Lake Forest Park
• Mercer Island
• Shoreline
• Vashon Island
• Woodway

Overlay System

Area code 206 will be converted to an overlay complex with area code 564 on June 10, 2025. Area code 564 also overlays 360. Ten-digit dialing has been mandatory for all of Washington west of the Cascades since 2017.

Area Code 206 Location Map

Area code 206 is a general purpose code which was placed in service on January 1, 1947.

206 Area Code Prefixes

Our Washington phone number lookup service will analyze the three-digit prefix of any 206 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Washington geographic region, and local calling area associated with the phone number.

Phone numbers follow the following structure under the North American Numbering Plan:

• NPA- area code (where the number was originally assigned)
• NXX - Central office code that locates the specific neighborhood and identifies the service provider
• XXXX - Subscriber number identifies the individual phone line within that local exchange

Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.

Prefixes by Company

Company	Number of Prefixes
QWEST CORPORATION	237
T-MOBILE USA, INC.	79
NEW CINGULAR WIRELESS PCS, LLC	52
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	50
ONVOY, LLC - WA	46
ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	24
LEVEL 3 COMMUNICATIONS, LLC - WA	24
USA MOBILITY WIRELESS, INC.	20
TELEPORT COMMUNICATIONS AMERICA, LLC - WA	18
XO WASHINGTON, INC.	16
MCIMETRO ACCESS TRANSMISSION SERVICES LLC	13
GLOBAL CROSSING LOCAL SERVICES, INC. - WA	8
METROPCS, INC.	7
PEERLESS NETWORK OF WASHINGTON, LLC - WA	6
AMERICAN MESSAGING SERVICES, LLC	5
LEVEL 3 TELECOM OF WASHINGTON, LLC - WA	5
COMCAST IP PHONE, LLC	4
MCLEODUSA TELECOMMUNICATION SERVICES, INC. - WA	4
ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER	4
BANDWIDTH.COM CLEC, LLC - WA	3
MAGNA5 LLC	3
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA	3
AT&T - LOCAL	2
CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK	2
YMAX COMMUNICATIONS CORP. - WA	2
AIRUS, INC. - WA	1
CENTURYLINK COMMUNICATIONS, LLC	1
ELTOPIA COMMUNICATIONS, LLC - WA	1
INTRADO COMMUNICATIONS, LLC	1
NUSO, LLC	1
ONVOY SPECTRUM, LLC	1
RCLEC, INC. - WA	1
TELNYX LLC	1
TELTRUST CORPORATION - WA	1
VONAGE AMERICA LLC	1

Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.

Prefixes by Rate Center

Rate Center	Number of Prefixes
SEATTLE	594
BAINBDG IS	18
DES MOINES	17
RICHMNDBCH	13
VASHON	5

Other Washington Area Codes

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