Company lists · Data refreshed September 2026

Top 25 Online advertising agencies based in Seattle, United States

Name: Online advertising agencies based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 196 companies tracked

RevenueBase identified 196 online advertising agencies headquartered in Seattle, United States as of September 2026 and tracks 875 professional contacts across them, including 236 with verified work emails. Across the United States, New York is the largest hub for this category (1,111 companies); Seattle has 196.

This list covers online advertising agencies headquartered in Seattle, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

196Companies

875Contacts tracked

236Verified emails

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The 25 largest online advertising agencies based in Seattle, United States

Ranked by team size

Top 25 of 196 online advertising agencies based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to online advertising agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Add3	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	51-200	50 contacts →
	Partial evidence “Add3 is a digital agency that delivers integrated digital marketing campaigns across paid search, SEO, social & display advertising, helping our clients reach their marketing…” Source: RevenueBase Database · checked Sep 5, 2026
2	Voglio Marketing	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	39 contacts →
	Indirect evidence “VOGLIO Digital Marketing is a performance marketing agency that helps businesses maximize their ROI through best-in-class data integration and rigorous execution.” Source: RevenueBase Database · checked Sep 5, 2026
3	Bonsai Media Group	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	29 contacts →
	Partial evidence “Bonsai Media Group is a digital advertising agency headquartered in Seattle.” Source: RevenueBase Database · checked Sep 5, 2026
4	Mockingbird Marketing	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	28 contacts →
	Indirect evidence “Mockingbird provides data-driven solutions to help solo attorneys and multi-state law firms create, measure and refine all aspects of their digital marketing.” Source: RevenueBase Database · checked Sep 5, 2026
5	ODD DOG Media	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	23 contacts →
	Indirect evidence “We’re a Seattle-founded marketing agency with established teams in Portland and Salt Lake City, dedicated to serving small and mid-sized businesses.” Source: RevenueBase Database · checked Sep 5, 2026
6	Actuate Media	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	18 contacts →
	Partial evidence “Actuate Media is a results-driven, industry-leading advertising agency known for 100% transparency, performance-driven strategies, and client success.” Source: RevenueBase Database · checked Sep 5, 2026
7	Logic Inbound	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	16 contacts →
	Indirect evidence “Logic Inbound identifies and executes on growth opportunities.” Source: RevenueBase Database · checked Sep 5, 2026
8	Marketeering Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	16 contacts →
	Indirect evidence “Marketeering Group is the digital marketing agency delivering flexible solutions to complex problems with strategic and impact-driven SEO implementation.” Source: RevenueBase Database · checked Sep 5, 2026
9	Fujisan Marketing	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	15 contacts →
	Indirect evidence “We help businesses achieve their desired results by creating fully transparent, customized digital marketing strategies and tactics.” Source: RevenueBase Database · checked Sep 5, 2026
10	Realdrseattle	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	15 contacts →
	Indirect evidence “Founded by medical experts, our multidisciplinary approach to medical marketing has proven so effective, our strategies have been adopted to an array of industries.” Source: RevenueBase Database · checked Sep 5, 2026
11	Nectr Social	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	14 contacts →
	Partial evidence “The advertising landscape has forever changed.” Source: RevenueBase Database · checked Sep 5, 2026
12	Adorbix	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	14 contacts →
	Indirect evidence “AdOrbix, a pioneering digital marketing agency, specializes in crafting tailored strategies to propel brands to new heights in the digital landscape.” Source: RevenueBase Database · checked Sep 5, 2026
13	Portent	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	13 contacts →
	Indirect evidence “Since 1995, Portent has been delivering business-changing growth for brands in tech, travel, physical retail, e-commerce, publishing, and more.” Source: RevenueBase Database · checked Sep 5, 2026
14	Full Speed Advertising	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	11 contacts →
	Partial evidence “Full Speed Advertising is a boutique digital marketing agency based in Seattle, WA.” Source: RevenueBase Database · checked Sep 5, 2026
15	Activities & Tours Marketing TRK Creative Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	11 contacts →
	Indirect evidence “We are a digital marketing agency focused 100% on the Activities, Tours and Travel sector.” Source: RevenueBase Database · checked Sep 5, 2026
16	Cxglobals	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	9 contacts →
	Indirect evidence “Full-service offerings to assess digital capability while providing comprehensive BI and Analytics with Channel focus expertise.” Source: RevenueBase Database · checked Sep 5, 2026
17	Keychain Social	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	9 contacts →
	Indirect evidence “Keychain Social is a strategic social media & digital marketing firm founded in January 2010 by a team of creative, strategic, and seasoned marketing professionals.” Source: RevenueBase Database · checked Sep 5, 2026
18	Bizango	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	8 contacts →
	Partial evidence “We're a full-service web design and online marketing agency dedicated to serving businesses, bestselling authors, startups and e-commerce.” Source: RevenueBase Database · checked Sep 5, 2026
19	Triad Media, INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	8 contacts →
	Partial evidence “Triad Media was founded on a simple belief: that the best advertising happens when real relationships exist between brands and publishers.” Source: RevenueBase Database · checked Sep 5, 2026
20	Johnfschuster Ecommerce	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	6 contacts →
	Indirect evidence “Our team helps you grow your revenue and leads using ecommerce marketing and ecommerce development based out of Seattle, WA.” Source: RevenueBase Database · checked Sep 5, 2026
21	Double Z Media	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	6 contacts →
	Indirect evidence “Your organization has big goals you are expected to hit but when it comes to truly knowing whether you're effective you end up with the following: Not enough time internally to do…” Source: RevenueBase Database · checked Sep 5, 2026
22	Engine Interactive	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	11-50	6 contacts →
	Indirect evidence “As one of the most established interactive agencies on the West Coast, Engine has been creating high performance interactive media for 17 years.” Source: RevenueBase Database · checked Sep 5, 2026
23	Clarity Online SEO	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	4 contacts →
	Indirect evidence “Seattle's SEO Agency” Source: RevenueBase Database · checked Sep 5, 2026
24	Lazar Marketing Consulting	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	4 contacts →
	Indirect evidence “At Lazar Marketing Consulting, we are about results, ROI, and optimizing key metrics that drive our clients' business forward for the long haul.” Source: RevenueBase Database · checked Sep 5, 2026
25	Northwest Media Partners	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	1-10	4 contacts →
	Partial evidence “NW Media Partners is a boutique digital marketing company specializing in managed service programmatic advertising for agencies & brands of all sizes.” Source: RevenueBase Database · checked Sep 5, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: online advertising agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names online advertising agencies.
Partial evidence: Its own public description names part of online advertising agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name online advertising agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 196 online advertising agencies based in Seattle, United States

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Online advertising agencies based in Seattle, United States at a glance

As of Sep 5, 2026

27.0%Verified-email coverage

4.5Average contacts per company

1-10Median size (employees)

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

153

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 196 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among online advertising agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Seattle, United States whose own description of what they do matches “online advertising agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names online advertising agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among online advertising agencies, and records with no verified work email. Companies headquartered outside Seattle are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 236 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Online advertising agencies by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names online advertising agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many online advertising agencies are there based in Seattle, United States?

RevenueBase identified 196 online advertising agencies headquartered in Seattle, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Add3, headquartered in Seattle, tops this list with the largest team on record.

Which city in the United States has the most online advertising agencies?

New York leads the United States with 1,111 headquartered companies, followed by Los Angeles (769) and Miami (613). Seattle has 196.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 236 verified decision-maker contacts tracked across these 196 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.