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Company lists · Data refreshed September 2026

Top 25 Marketing outsourcing companies based in the United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 49,980 companies tracked

RevenueBase identified 49,980 marketing outsourcing companies headquartered in the United States as of September 2026 and tracks 339,765 professional contacts across them, including 92,014 with verified work emails and 113,365 with mobile numbers. New York is the largest hub.

This list covers marketing outsourcing companies 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
49,980Companies
339,765Contacts tracked
92,014Verified emails
113,365Mobile numbers
Unlock all 49,980 companies Free signup · no credit card · 500 free credits

The 25 largest marketing outsourcing companies based in the United States

Ranked by team size
Top 25 of 49,980 marketing outsourcing companies 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 outsourcing companies: 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
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
2
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
3
GREYIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 20265,001-10,0002,648

“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…”

Source: company website · checked Sep 5, 2026
4
Best Version MediaPartial evidence
Brookfield, WI, United StatesHQ checked Sep 5, 2026n/a2,416

“Best Version Media simplifies local marketing by offering small and midsize businesses a complete mix of solutions to keep them top-of-mind, from community magazine ads to digital…”

Source: company website · checked Sep 5, 2026
5
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
6
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
7
Power Digital MarketingPartial evidence
San Diego, CA, United StatesHQ checked Sep 5, 2026501-1,0001,570

“Power Digital is a growth marketing firm fueled by technology and driven by a talented team of consultative marketers, creatives, analysts and technologists.”

Source: company website · checked Sep 5, 2026
8
TBCIndirect evidence
Baltimore, MD, United StatesHQ checked Sep 5, 2026n/a1,255

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

Source: company website · checked Sep 5, 2026
9
ScorpionIndirect evidence
Draper, UT, United StatesHQ checked Sep 5, 2026501-1,0001,076

“Scorpion is the leader in helping local businesses succeed by focusing on what truly matters-driving revenue.”

Source: company website · checked Sep 5, 2026
10
Archway Marketing ServicesPartial evidence
Maple Grove, MN, United StatesHQ checked Sep 5, 20261,001-5,000929

“Archway is the preferred partner in marketing execution for well-known brands.”

Source: company website · checked Sep 5, 2026
11
Logical PositionIndirect evidence
Lake Oswego, OR, United StatesHQ checked Sep 5, 2026501-1,000899

“Logical Position (LP) is an Inc.”

Source: company website · checked Sep 5, 2026
12
WEBFXPartial evidence
Harrisburg, PA, United StatesHQ checked Sep 5, 2026501-1,000866

“We're here to be your digital marketing growth partner in the AI era.”

Source: company website · checked Sep 5, 2026
13
NP DigitalIndirect evidence
San Diego, CA, United StatesHQ checked Sep 5, 20261,001-5,000866

“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…”

Source: company website · checked Sep 5, 2026
14
SEO INCIndirect evidence
Carlsbad, CA, United StatesHQ checked Sep 5, 2026n/a825

“Since its inception in 1997, SEO Inc.”

Source: company website · checked Sep 5, 2026
15
EssenceIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 20261,001-5,000782

“Formerly Essence, we are now EssenceMediacom.”

Source: company website · checked Sep 5, 2026
16
Allied Global MarketingPartial evidence
Los Angeles, CA, United StatesHQ checked Sep 5, 2026201-500750

“In business for over 30 years, Allied has built upon its roots in film advertising and publicity to become a global leader in entertainment, culture, and lifestyle marketing.”

Source: company website · checked Sep 5, 2026
17
AnteriadIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 2026501-1,000740

“Data Driven.”

Source: company website · checked Sep 5, 2026
18
Abstrakt Marketing GroupIndirect evidence
St Louis, MO, United StatesHQ checked Sep 5, 2026501-1,000724

“We book the qualified meetings that fill your pipeline for any B2B company ready to grow.”

Source: company website · checked Sep 5, 2026
19
DONERPartial evidence
Southfield, MI, United StatesHQ checked Sep 5, 2026501-1,000708

“Doner unlocks all the tools of Modern marketing to build lasting connections with every day, Main Street consumers.”

Source: company website · checked Sep 5, 2026
20
Team ONEIndirect evidence
Los Angeles, CA, United StatesHQ checked Sep 5, 2026201-500698

“Team One was founded with one philosophical focus: to construct brands of elevated aspiration and worth by attracting affluent consumers like never before.”

Source: company website · checked Sep 5, 2026
21
SCIIndirect evidence
Miami, FL, United StatesHQ checked Sep 5, 2026501-1,000696

“SCI was merged and sold to WPP in 2010.”

Source: company website · checked Sep 5, 2026
22
Vertis CommunicationsIndirect evidence
Sussex, WI, United StatesHQ checked Sep 5, 202610001+605

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

Source: company website · checked Sep 5, 2026
23
CMDIndirect evidence
Portland, OR, United StatesHQ checked Sep 5, 2026n/a604

“Take command of every opportunity with a partner that gets results.”

Source: company website · checked Sep 5, 2026
24
Stream CompaniesIndirect evidence
Malvern, PA, United StatesHQ checked Sep 5, 2026501-1,000572

“Stream Companies is a full service advertising agency that specializes in launching, positioning, and long term management of brands on full service contracts and a…”

Source: company website · checked Sep 5, 2026
25
SGTPartial evidence
Houston, TX, United StatesHQ checked Sep 5, 2026201-500557

“After almost 2 years driving internal demand at one of Omnicom's lead Marketing strategy agencies I have returned to Lead to Market to lead our applied marketing practice.”

Source: company website · checked Sep 5, 2026

Showing 25 of 49,980 marketing outsourcing companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 92,014 reachable decision-makers.

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Marketing outsourcing companies based in the United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 2181 HQs
113,365Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
37,351
11-50
10,555
51-200
1,552
201-500
321
501-1,000
82
1,001-5,000
45
5,001-10,000
9
10001+
33

Verified emails by last verification

0–30
85,587
31–60
5,513
61–90
47
90–180
54
180+
813

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 outsourcing companies, 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 outsourcing companies”. 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 outsourcing companies, 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, 92,014 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 outsourcing companies by metro

Frequently asked

How many marketing outsourcing companies are there based in the United States?

RevenueBase identified 49,980 marketing outsourcing companies 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?

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

Which city has the most marketing outsourcing companies?

New York leads with 2181 headquartered companies, followed by Los Angeles (1612) and Miami (1088).

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 92,014 verified decision-maker contacts tracked across these 49,980 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 49,980 marketing outsourcing companies 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 outsourcing companies 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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