Company lists · Data refreshed September 2026

Top 25 Big six advertising agencies based in the United States

Name: Big six advertising agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 9,033 companies tracked

RevenueBase identified 9,033 company matches for big six advertising agencies associated with the United States as of September 2026 and tracks 245,518 professional contacts across them, including 71,348 with verified work emails and 72,793 with mobile numbers. New York is the largest hub.

This list covers company matches for big six advertising agencies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 23, 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 RevenueBase SmartSearch · Exact Recorded Sep 23, 2026 How this list was built

9,033Companies

245,518Contacts tracked

71,348Verified emails

72,793Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest big six advertising agencies based in the United States

Ranked by team size

Top 25 of 9,033 company matches for big six advertising agencies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	VML	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	15,338 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2	Ogilvy	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	12,165 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	QUAD	Exact match	Sussex, WI, United StatesHQ recorded Sep 23, 2026	10001+	9,567 contacts →
	Exact match “Quad (NYSE: QUAD) is a global marketing experience company that helps brands make direct consumer connections, from household to in-store to online.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	Starcom	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	5,520 contacts →
	Exact match “With a history that dates back over 80 years, Starcom is a global communications planning and media leader.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	LEO Burnett	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	5,385 contacts →
	Exact match “Leo Burnett is a communications agency powered by its HumanKind operating system, with the belief that creativity, data and technology work together to transform human behavior…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	IPG Mediabrands	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	4,963 contacts →
	Exact match “IPG Mediabrands is the media and marketing solutions division of Interpublic Group (NYSE: IPG).” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7	Omnicom Media Group	Exact match	New York, United StatesHQ recorded Sep 23, 2026	10001+	3,989 contacts →
	Exact match “Omnicom Media Group (OMG), the media services division of Omnicom Group Inc, delivers transformational experiences for consumers, clients, and talent.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	Mccann Worldgroup	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	3,874 contacts →
	Exact match “McCann Worldgroup, part of the Interpublic Group (NYSE: IPG), is the irrefutable leader in the business of creativity.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	SGK	Exact match	Des Plaines, IL, United StatesHQ recorded Sep 23, 2026	5,001-10,000	3,587 contacts →
	Exact match “SGK, part of the Propelis Group, is a global brand and content production agency.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	Thompson	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	5,001-10,000	3,574 contacts →
	Exact match “J.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	Initiative	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	5,001-10,000	2,980 contacts →
	Exact match “Initiative unlocks business growth for the world’s most ambitious brands.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Spark Foundry	Exact match	NY, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,822 contacts →
	Exact match “As one of the fastest-growing global media agency networks, Spark Foundry is not beholden to legacy.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	Digitas North America	Exact match	Boston, MA, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,654 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	GREY	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	5,001-10,000	2,648 contacts →
	Exact match “Grey’s mission is to create Famously Effective ideas that move people, business, and the world forward-harnessing the power of creativity to solve business problems and deliver…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	OMD	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	2,639 contacts →
	Exact match “OMD is the world’s largest media network, with more than people working across more than 100 countries.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	Publicis	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,531 contacts →
	Exact match “You can either adapt to change, ignore it or lead it.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Horizon Media	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,368 contacts →
	Exact match “Horizon Media is a leader in driving business-based outcomes for marketers.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	Assembly Global	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,313 contacts →
	Exact match “Assembly is a global omnichannel agency built for brands that want a more modern approach to building brands that perform.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	R GA	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,189 contacts →
	Exact match “R/GA is an independent creative innovation company for the intelligence age.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	UM Worldwide	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,981 contacts →
	Exact match “Our Stand Against Bland approach creates limitless possibilities, making everything we do intelligently driven, diversely courageous, business- and brand-obsessed, and dedicated…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	Wunderman Thompson	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	1,870 contacts →
	Exact match “Part creative agency, part consultancy and part technology company, we inspire growth for ambitious brands.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	Omnicom	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	1,727 contacts →
	Exact match “Omnicom is the world’s leading marketing and sales company, built for intelligent growth in the next era.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	Wieden Kennedy	Exact match	Portland, OR, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,711 contacts →
	Exact match “Wieden+Kennedy is an independent, global creative company that has built and transformed some of the world’s most well-known, exciting brands for over forty years.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	TMS	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,688 contacts →
	Exact match “tms unites technology and marketing and sourcing to drive transformational change for the world’s leading brands.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25	Young & Rubicam	Exact match	New York, NY, United StatesHQ recorded Sep 23, 2026	10001+	1,602 contacts →
	Exact match “Y&R is a leading global marketing communications company, with more than 189 offices in 90+ countries.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “big six advertising agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 9,033 big six advertising agencies based in the United States

See the full list, filter by size, metro and specialty, and access 71,348 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Big six advertising agencies based in the United States at a glance

As of Sep 23, 2026

29.1%Verified-email coverage

29.6%Mobile-number coverage

27.2Average contacts per company

1-10Median size (employees)

10.0%Largest-city concentration · New York

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

5,671

11-50

2,597

51-200

533

201-500

117

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 25.0d

53,9240–30

15,82331–60

1,00661–90

5190–180

544180+

Company record updated

Median 86.0d

00–30

60,55631–60

105,54961–90

63,93790–180

15,476180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “big six advertising agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 71,348 professional contacts with verified work emails across the full matched dataset. 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 23, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Big six advertising agencies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “big six advertising agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many big six advertising agencies are there based in the United States?

RevenueBase identified 9,033 company matches for big six advertising agencies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

VML tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most big six advertising agencies?

New York leads with 901 company records, followed by Los Angeles (499) and Miami (229).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 71,348 professional contacts with verified work emails tracked across these 9,033 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 23, 2026.

Ready to reach these companies? Verified emails and direct dials for all 9,033 big six advertising agencies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Big six advertising agencies by geography

Browse the directory

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.