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Company lists · Data refreshed September 2026

Top 25 Marketing and advertising agencies based in the United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 58,993 companies tracked

RevenueBase identified 58,993 marketing and advertising agencies headquartered in the United States as of September 2026 and tracks 608,769 professional contacts across them, including 177,971 with verified work emails and 196,958 with mobile numbers. New York is the largest hub.

This list covers marketing and advertising agencies headquartered in the 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, how directly it supports the match, 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 SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
58,993Companies
608,769Contacts tracked
177,971Verified emails
196,958Mobile numbers
Unlock all 58,993 companies Free signup · no credit card · 500 free credits

The 25 largest marketing and advertising agencies based in the United States

Ranked by team size
Top 25 of 58,993 marketing and advertising agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names marketing and advertising agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
VMLIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+15,338

“VML is a global powerhouse born from the unification of Wunderman Thompson and VMLY & R, two of the world's most powerful and accomplished creative agencies with complementary…”

Source: company website · checked Sep 5, 2026
2
OgilvyIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+12,165

“Ogilvy has been creating impact for brands through iconic, culture-changing, value-driving ideas since the company was founded by David Ogilvy 75 years ago.”

Source: company website · checked Sep 5, 2026
3
QUADPartial evidence
Sussex, WI, United StatesHQ checked Sep 5, 202610001+9,567

“Quad (NYSE: QUAD) is a global marketing experience company that helps brands make direct consumer connections, from household to in-store to online.”

Source: company website · checked Sep 5, 2026
4
IPG MediabrandsPartial evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+4,963

“IPG Mediabrands is the media and marketing solutions division of Interpublic Group (NYSE: IPG).”

Source: company website · checked Sep 5, 2026
5
Omnicom Media GroupIndirect evidence
New York, United StatesHQ checked Sep 5, 202610001+3,989

“Omnicom Media Group (OMG), the media services division of Omnicom Group Inc, delivers transformational experiences for consumers, clients, and talent.”

Source: company website · checked Sep 5, 2026
6
Mccann WorldgroupIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+3,874

“McCann Worldgroup, part of the Interpublic Group (NYSE: IPG), is the irrefutable leader in the business of creativity.”

Source: company website · checked Sep 5, 2026
7
Spark FoundryIndirect evidence
NY, United StatesHQ checked Sep 5, 20261,001-5,0002,822

“As one of the fastest-growing global media agency networks, Spark Foundry is not beholden to legacy.”

Source: company website · checked Sep 5, 2026
8
Digitas North AmericaIndirect evidence
Boston, MA, United StatesHQ checked Sep 5, 20261,001-5,0002,654

“Digitas is the Networked Experience Agency, built on the vision that we create magnetic experiences that earn the right for brands to exist in human networks.”

Source: company website · checked Sep 5, 2026
9
PublicisIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0002,531

“You can either adapt to change, ignore it or lead it.”

Source: company website · checked Sep 5, 2026
10
Horizon MediaIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0002,368

“Horizon Media is a leader in driving business-based outcomes for marketers.”

Source: company website · checked Sep 5, 2026
11
Assembly GlobalIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0002,313

“Assembly is a global omnichannel agency built for brands that want a more modern approach to building brands that perform.”

Source: company website · checked Sep 5, 2026
12
R GAIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0002,189

“R/GA is an independent creative innovation company for the intelligence age.”

Source: company website · checked Sep 5, 2026
13
Wunderman ThompsonIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+1,870

“Part creative agency, part consultancy and part technology company, we inspire growth for ambitious brands.”

Source: company website · checked Sep 5, 2026
14
RazorfishIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,763

“Hi there!”

Source: company website · checked Sep 5, 2026
15
OmnicomPartial evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+1,727

“Omnicom is the world’s leading marketing and sales company, built for intelligent growth in the next era.”

Source: company website · checked Sep 5, 2026
16
TMSPartial evidence
Chicago, IL, United StatesHQ checked Sep 5, 20261,001-5,0001,688

“tms unites technology and marketing and sourcing to drive transformational change for the world’s leading brands.”

Source: company website · checked Sep 5, 2026
17
Young & RubicamPartial evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+1,602

“Y&R is a leading global marketing communications company, with more than 189 offices in 90+ countries.”

Source: company website · checked Sep 5, 2026
18
Hearts & ScienceIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,359

“Hearts & Science, an Omnicom Media Group agency, transforms data signals into meaningful connections between brands and consumers that drive exponential growth.”

Source: company website · checked Sep 5, 2026
19
Momentum WorldwideIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,320

“People are no longer satisfied with simply "hearing" a brand's message.”

Source: company website · checked Sep 5, 2026
20
Tbwa WorldwideIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+1,252

“TBWA is The Disruption Company®.”

Source: company website · checked Sep 5, 2026
21
MccannIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+1,207

“We build enduring brands that move people and markets through the radical creativity of Truth Well Told™.”

Source: company website · checked Sep 5, 2026
22
TinuitiIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,173

“Tinuiti is a media agency that not only builds brands, but architects business outcomes.”

Source: company website · checked Sep 5, 2026
23
FCB Health NEW YorkPartial evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,173

“Part of Omnicom Health, FCB Health New York is a full-service agency with more than 40 years of experience marketing to healthcare professionals, patients and consumers.”

Source: company website · checked Sep 5, 2026
24
GTBPartial evidence
Detroit, MI, United StatesHQ checked Sep 5, 20261,001-5,0001,064

“GTB is a global performance marketing agency, creating ideas that inspire people to act.”

Source: company website · checked Sep 5, 2026
25
MediaoceanStrong evidence
New York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,050

“Mediaocean is powering the future of the advertising ecosystem with technology that empowers brands and agencies to deliver impactful omnichannel marketing experiences.”

Source: company website · checked Sep 5, 2026

Showing 25 of 58,993 marketing and advertising agencies based in the United States

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Marketing and advertising agencies based in the United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 3720 HQs
196,958Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
42,357
11-50
13,742
51-200
2,201
201-500
403
501-1,000
106
1,001-5,000
89
10001+
44

Verified emails by last verification

0–30
165,675
31–60
10,635
61–90
85
90–180
89
180+
1,487

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 marketing and advertising agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “marketing and advertising agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among marketing and advertising agencies, and records with no verified work email. Companies headquartered outside United States 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 an evidence 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, 177,971 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.

Marketing and advertising agencies by metro

  • Marketing and advertising agencies in New York3720
  • Marketing and advertising agencies in Los Angeles2504
  • Marketing and advertising agencies in Miami1400
  • Marketing and advertising agencies in Chicago1242
  • Marketing and advertising agencies in Atlanta1151
  • Marketing and advertising agencies in Houston945
  • Marketing and advertising agencies in Austin876

Frequently asked

How many marketing and advertising agencies are there based in the United States?

RevenueBase identified 58,993 marketing and advertising agencies headquartered in the 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?

VML, headquartered in New York, tops this list with the largest team on record.

Which city has the most marketing and advertising agencies?

New York leads with 3720 headquartered companies, followed by Los Angeles (2504) and Miami (1400).

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 177,971 verified decision-maker contacts tracked across these 58,993 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.

Ready to reach these companies? Verified emails and direct dials for all 58,993 marketing and advertising agencies based in the United States. Start with a free account, no credit card.

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Related lists

Browse: Companies home · All United States lists · All Marketing and advertising agencies lists · New lists

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 SmartSearch, 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.

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