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Marketing agencies in Seattle, WA

249 marketing agencies listed in Seattle, Washington. 232 with a phone number and 224 with a website.

Seattle accounts for 27% of the marketing agencies listed in Washington.

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Quick answer

Seattle, WA has 249 marketing agencies listed on USA Business Search. 232 list a phone number and 224 list a website. The most listings are in ZIP codes 98104, 98109, 98101.

Updated November 2026
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How to choose a marketing agency in Seattle

  • Ask who will actually do the work and how you'll see results each month.
  • Be wary of anyone who guarantees rankings. No one can promise a spot in Google.
  • Make sure you own your website, ad accounts and Google Business Profile, not the agency.

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 marketing agencies are listed in Seattle, Washington?

USA Business Search shows 249 marketing agencies in Seattle. 232 list a phone number and 224 list a website.

Which ZIP codes do these listings cover?

They include ZIP codes 98104, 98109, 98101, 98122, 98107, 98121, 98134, 98103.

How do I choose a marketing agency in Seattle?

Ask who will actually do the work and how you'll see results each month. Be wary of anyone who guarantees rankings. No one can promise a spot in Google. Make sure you own your website, ad accounts and Google Business Profile, not the agency. 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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