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Regulated Industries > Telecommunications >
Maps for Washington Telecommunications Companies
The UTC uses several different kinds of maps to track and regulate telephone service in Washington, and we're always working on improving our mapping information.
2009 map of local exchange areas by company.
1997 map of local exchange areas by company.
Telecommunications companies file Form 477 annually with the Federal Communications Commission (FCC) identifying the zip code areas where they provide particular services. Commission staff used the January 2004 information to create maps showing the concentration of companies in zip code areas around the state. These maps are only as accurate as the base data from which they were created. Currently, there are two maps available, showing Broadband service and Local telephone service.
Links to other maps
Area code map. Area code maps are maintained by the North American Numbering Plan Administrator. This link takes you to it's website.
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