Company lists · Data refreshed October 2026

Top 23 Internal marketing agencies based in the United States

RevenueBase identified 52,536 company matches for internal marketing agencies associated with the United States as of October 2026 and tracks 410,986 professional contacts across them, including 118,553 with verified work emails and 142,139 with mobile numbers. New York is the largest hub.

This list covers company matches for internal marketing 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 October 1, 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 Oct 1, 2026 How this list was built
52,536Companies
410,986Contacts tracked
118,553Verified emails
142,139Mobile numbers
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The 23 largest internal marketing agencies based in the United States

Ranked by team size
Top 23 of 52,536 company matches for internal marketing agencies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNew York, NY, United StatesHQ recorded Oct 1, 202610001+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 · Oct 1, 2026 · View company records in RevenueBase
2Exact matchBoston, MA, United StatesHQ recorded Oct 1, 20261,001-5,0002,654 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 · Oct 1, 2026 · View company records in RevenueBase
3Exact matchNew York, NY, United StatesHQ recorded Oct 1, 20261,001-5,0002,368 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Oct 1, 20261,001-5,0001,763 contacts →

Exact match

“Hi there!”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchNew York, NY, United StatesHQ recorded Oct 1, 202610001+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 · Oct 1, 2026 · View company records in RevenueBase
6Exact matchNew York, NY, United StatesHQ recorded Oct 1, 202610001+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 · Oct 1, 2026 · View company records in RevenueBase
7Exact matchNew York, NY, United StatesHQ recorded Oct 1, 202610001+1,207 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchNew York, NY, United StatesHQ recorded Oct 1, 20261,001-5,000903 contacts →

Exact match

“1300+ People.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchSan Diego, CA, United StatesHQ recorded Oct 1, 20261,001-5,000866 contacts →

Exact match

“Neil Patel has been recognized by the Wall Street Journal, Forbes, and the United Nations, to name a few, as one of the most influential and successful marketers and entrepreneurs…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchSan Francisco, CA, United StatesHQ recorded Oct 1, 20261,001-5,000782 contacts →

Exact match

“Formerly Essence, we are now EssenceMediacom.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchLos Angeles, CA, United StatesHQ recorded Oct 1, 202610001+756 contacts →

Exact match

“Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchSussex, WI, United StatesHQ recorded Oct 1, 202610001+605 contacts →

Exact match

“Vertis Communications was acquired by Quad/Graphics in January 2013.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchBentonville, AR, United StatesHQ recorded Oct 1, 202610001+387 contacts →

Exact match

“Product Connections (PCX) is a full-service marketing agency built to move fast and deliver.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Oct 1, 20261,001-5,000366 contacts →

Exact match

“We are now KINESSO.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15Exact matchDenver, CO, United StatesHQ recorded Oct 1, 20261,001-5,000234 contacts →

Exact match

“We are the Growth Company.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchNew York, NY, United StatesHQ recorded Oct 1, 20261,001-5,00069 contacts →

Exact match

“Unreasonable Studios delivers a full spectrum of creative capabilities – from original and branded entertainment to live-action commercials, editorial photography, full-funnel…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchCincinnati, OH, United StatesHQ recorded Oct 1, 20261,001-5,00066 contacts →

Exact match

“We make companies more successful by connecting them with our network of over mid and high-level associates.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18Exact matchNew York, NY, United StatesHQ recorded Oct 1, 2026n/a63 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 · Oct 1, 2026 · View company records in RevenueBase
19Exact matchNew York, NY, United StatesHQ recorded Oct 1, 20261,001-5,00055 contacts →

Exact match

“Informa Engage is the global digital marketing services organization behind Informa’s prominent portfolio of trusted B2B brands.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20Exact matchUnited StatesHQ recorded Oct 1, 20261,001-5,00024 contacts →

Exact match

“Evoke Mind+Matter US is now Inizio Evoke Drive, delivering full-service marketing and creative capabilities to accelerate brands, business and patient experiences.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Oct 1, 20261,001-5,00017 contacts →

Exact match

“About Foundry9 Founded in 2004, Foundry9 is a best in class, full-service agency that offers marketing and advertising services, analytics, creative design, information…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchBoston, MA, United StatesHQ recorded Oct 1, 20261,001-5,00013 contacts →

Exact match

“Boston, USA-based Wunderman Thompson Studios, a great place to work certified organization, offers inspiring growth of all marketing investments through the intelligent…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23Exact matchKansas City, MO, United StatesHQ recorded Oct 1, 2026n/a12 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 23 of 52,536 internal marketing agencies based in the United States

See the full list, filter by size, metro and specialty, and access 118,553 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internal marketing agencies based in the United States at a glance

As of Oct 1, 2026
28.8%Verified-email coverage
34.6%Mobile-number coverage
7.8Average contacts per company
1-10Median size (employees)
5.4%Largest-city concentration · New York
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
38,958
11-50
11,440
51-200
1,669
201-500
285
501-1,000
74
1,001-5,000
46
10001+
29

Freshness & accuracy

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

Email last verified

Median 34.0d

Company record updated

Median 94.0d

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 “internal marketing 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 118,553 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 October 1, 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.

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 “internal marketing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 52,536 company matches for internal marketing agencies associated with the United States as of October 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?

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

Which city has the most internal marketing agencies?

New York leads with 2838 company records, followed by Los Angeles (2022) and Miami (1188).

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 118,553 professional contacts with verified work emails tracked across these 52,536 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 October 1, 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 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.