Washington Area Codes

There are total six area codes reserved for the state of Washington (WA). The capital of the state is Olympia while Seattle is the largest city. The state of Washington is the 18th largest state by size. The Standard Time Zone implemented in the state is Pacific Time Zone.
Washington area codes providing telephone services in state are:

• Area Code 206
• Area Code 253
• Area Code 360
• Area Code 425
• Area Code 509
• Area Code 564

Major companies providing telephone services in Washington are:

• BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
• BROADWING COMMUNICATINS. LLC - CA
• CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ
• CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
• GLOBAL CROSSING LOCAL SERVICES, INC.-CA
• LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.
• LEVEL 3 COMMUNICATIONS, LLC - CA
• MPOWER COMMUNICATIONS CORP. - CA
• NETWORK SERVICES LLC
• NEW CINGULAR WIRELESS PCS, LLC
• NEW CINGULAR WIRELESS PCS, LLC - GA
• NEW CINGULAR WIRELESS PCS, LLC - IL
• O1 COMMUNICATIONS, INC. - CA
• PACIFIC BELL
• PAETEC COMMUNICATIONS, INC. - CA
• QWEST CORPORATION
• SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA
• SOUTHERN TELCOM NETWORK, INC. - AR
• SOUTHWESTERN BELL
• USA MOBILITY WIRELESS, INC.
• VERIZON CALIFORNIA INC.-CA (GTE)

A brief description of Washington Area Codes is given below:

It was assigned to entire State of Washington in 1947 by NANP (North American Numbering Plan). The Code 206 served the state without going through any change until 1957 when it was split into area code 509. 

It was created on 27th April as a result in split of area code 206. The Code 253 was formed for providing numbering relief to area code 206. Some of the counties served by the code are KING, KITSAP, PIERCE and THURSTON.

This area code is allocated to the areas located in western Washington but outside of the greater Seattle metropolitan area. Previously all the areas that fall under western Washington region were part of the original code 206.

This area code was created on April 27, 1997 as a result in split of area code 206. It was assigned to the regions including Seattle, the islands of Mercer, Bainbridge and Vashon, and parts of the Seattle metro area from Des Moines to Wood way.

This area code was created as a result in split of area code 206 on 1 January 1957. The 206 afterwards was split into; 360 (1995), 245 (1997) and 253 (1997).

It was proposed in 1999 and was planned first to overlay area code 360. However, it was expended in May 2000.