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Advertising agencies in Washington

454 advertising agencies listed across 83 cities in Washington.

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Quick answer

USA Business Search lists 454 advertising agencies in Washington. The most are in Seattle (160), Spokane (41), Vancouver (24).

Updated November 2026

Advertising agencies by city

Well-documented advertising agencies in Washington

A sample of listings with a street address, phone number and website, one per city.

How to choose an advertising agency in Washington

  • Ask how they track ads to real calls, forms and sales, not just clicks.
  • Make sure your ad accounts are in your name, not the agency's.
  • Ask what the management fee is and what the ad spend is, separately.

Common questions

How many advertising agencies are listed in Washington?

USA Business Search lists 454 advertising agencies in Washington, in 83 cities and towns.

Which Washington cities have the most advertising agencies?

Seattle (160), Spokane (41), Vancouver (24), Bellevue (16), Tacoma (13).

How do I verify a Washington business?

Use the state's official business search and licensing boards, linked in our Washington business lookup guide.

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