Company lists · Data refreshed September 2026

Top 25 Media agencies and representatives based in the United States

RevenueBase identified 2,939 media agencies and representatives headquartered in the United States as of September 2026 and tracks 120,526 professional contacts across them, including 40,702 with verified work emails and 41,402 with mobile numbers. New York is the largest hub.

This list covers media agencies and representatives 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, 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
2,939Companies
120,526Contacts tracked
40,702Verified emails
41,402Mobile numbers
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The 25 largest media agencies and representatives based in the United States

Ranked by team size
Top 25 of 2,939 media agencies and representatives based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to media agencies and representatives: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSussex, WI, United StatesHQ checked Sep 5, 202610001+9,567 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
2Indirect evidenceNY, United StatesHQ checked Sep 5, 202610001+8,120 contacts →

Indirect evidence

“We’ve rebranded!”

Source: RevenueBase Database · checked Sep 5, 2026
3Partial evidenceChicago, IL, United StatesHQ checked Sep 5, 20265,001-10,0005,520 contacts →

Partial evidence

“With a history that dates back over 80 years, Starcom is a global communications planning and media leader.”

Source: RevenueBase Database · checked Sep 5, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 5, 202610001+4,963 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
5Indirect evidenceVentura, CA, United StatesHQ checked Sep 5, 20261,001-5,0004,307 contacts →

Indirect evidence

“It's more than just clicks.”

Source: RevenueBase Database · checked Sep 5, 2026
6Partial evidenceNew York, United StatesHQ checked Sep 5, 202610001+3,989 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
7Indirect evidenceNew York, NY, United StatesHQ checked Sep 5, 20265,001-10,0002,980 contacts →

Indirect evidence

“Initiative unlocks business growth for the world’s most ambitious brands.”

Source: RevenueBase Database · checked Sep 5, 2026
8Partial evidenceNY, United StatesHQ checked Sep 5, 20261,001-5,0002,822 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
9Partial evidenceNew York, NY, United StatesHQ checked Sep 5, 202610001+2,639 contacts →

Partial evidence

“OMD is the world’s largest media network, with more than people working across more than 100 countries.”

Source: RevenueBase Database · checked Sep 5, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,0002,368 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
11Indirect evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,981 contacts →

Indirect evidence

“Our Stand Against Bland approach creates limitless possibilities, making everything we do intelligently driven, diversely courageous, business- and brand-obsessed, and dedicated…”

Source: RevenueBase Database · checked Sep 5, 2026
12Partial evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,395 contacts →

Partial evidence

“VaynerMedia is a contemporary global creative and media agency with an expertise in driving relevance for clients and delivering impactful business results.”

Source: RevenueBase Database · checked Sep 5, 2026
13Partial evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,359 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
14Indirect evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,273 contacts →

Indirect evidence

“FreeWheel’s TV and video advertising technology is built for today’s ever-evolving multiscreen ecosystem.”

Source: RevenueBase Database · checked Sep 5, 2026
15Indirect evidenceBaltimore, MD, United StatesHQ checked Sep 5, 2026n/a1,255 contacts →

Indirect evidence

“TBC is an independently owned, full-service branding, advertising and strategic communications agency with headquarters in Baltimore, Maryland, USA.”

Source: RevenueBase Database · checked Sep 5, 2026
16Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 5, 20261,001-5,0001,236 contacts →

Partial evidence

“CMI Media Group, a WPP company, is a global, full-service media agency focused solely on health, wellness, life sciences and pharmaceutical marketing.”

Source: RevenueBase Database · checked Sep 5, 2026
17Partial evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,173 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
18Indirect evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,050 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 5, 2026
19Partial evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,0001,010 contacts →

Partial evidence

“Brainlabs is an independent, AI-native media agency built to grow client revenue and prove the impact of every dollar spent on media.”

Source: RevenueBase Database · checked Sep 5, 2026
20Indirect evidenceHudson Yards, NY, United StatesHQ checked Sep 5, 20261,001-5,000940 contacts →

Indirect evidence

“XR Extreme Reach is the leading platform for managing advertising operations.”

Source: RevenueBase Database · checked Sep 5, 2026
21Partial evidenceAtlanta, GA, United StatesHQ checked Sep 5, 2026501-1,000857 contacts →

Partial evidence

“Cox Media is your partner for marketing success, offering advanced cable and digital advertising products in 22 markets across the United States.”

Source: RevenueBase Database · checked Sep 5, 2026
22Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 5, 20261,001-5,000782 contacts →

Indirect evidence

“Formerly Essence, we are now EssenceMediacom.”

Source: RevenueBase Database · checked Sep 5, 2026
23Indirect evidenceNew York, NY, United StatesHQ checked Sep 5, 2026501-1,000738 contacts →

Indirect evidence

“We’re on a mission to clarify the digital universe.”

Source: RevenueBase Database · checked Sep 5, 2026
24Partial evidenceNew York, NY, United StatesHQ checked Sep 5, 20261,001-5,000706 contacts →

Partial evidence

“Mediahub is an award-winning global media agency and part of Omnicom Media.”

Source: RevenueBase Database · checked Sep 5, 2026
25Indirect evidenceNew York, NY, United StatesHQ checked Sep 5, 2026501-1,000640 contacts →

Indirect evidence

“Innovid is the leading independent ad tech platform, empowering marketers to create, deliver, measure, and optimize ad-supported experiences that people love.”

Source: RevenueBase Database · checked Sep 5, 2026

Showing 25 of 2,939 media agencies and representatives based in the United States

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Media agencies and representatives based in the United States at a glance

As of Sep 5, 2026
33.8%Verified-email coverage
34.4%Mobile-number coverage
41.0Average contacts per company
1-10Median size (employees)
10.9%Largest-city concentration · New York
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
1,617
11-50
935
51-200
251
201-500
70
501-1,000
19
1,001-5,000
26
5,001-10,000
5
10001+
14

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 media agencies and representatives, 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 the United States whose own description of what they do matches “media agencies and representatives”. 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 media agencies and representatives), 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 media agencies and representatives, 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 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, 40,702 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.

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 media agencies and representatives, 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 media agencies and representatives are there based in the United States?

RevenueBase identified 2,939 media agencies and representatives 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?

QUAD, headquartered in Sussex, tops this list with the largest team on record.

Which city has the most media agencies and representatives?

New York leads with 319 headquartered companies, followed by Los Angeles (156) and Chicago (73).

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 40,702 verified decision-maker contacts tracked across these 2,939 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.