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Advertising agencies in Seattle, WA

160 advertising agencies listed in Seattle, Washington. 153 with a phone number and 150 with a website.

Seattle accounts for 35.2% of the advertising agencies listed in Washington.

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Quick answer

Seattle, WA has 160 advertising agencies listed on USA Business Search. 153 list a phone number and 150 list a website. The most listings are in ZIP codes 98101, 98104, 98121.

Updated November 2026
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How to choose an advertising agency in Seattle

  • 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.

Check the business: confirm a company's registration with the state in our Washington business lookup guide, and licensed trades in the contractor license lookup guide.

Common questions

How many advertising agencies are listed in Seattle, Washington?

USA Business Search shows 160 advertising agencies in Seattle. 153 list a phone number and 150 list a website.

Which ZIP codes do these listings cover?

They include ZIP codes 98101, 98104, 98121, 98109, 98134, 98122, 98119, 98103.

How do I choose an advertising agency in Seattle?

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. Check the license or registration through the Washington business lookup guide.

How do I add or fix a listing?

Listings are free. Use Add your business, or the Claim or fix link on any listing.

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