Company lists · Data refreshed September 2026

Top 25 Marketing consultants based in the United States

Name: Marketing consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 57,131 companies tracked

RevenueBase identified 57,131 marketing consultants headquartered in the United States as of September 2026 and tracks 342,571 professional contacts across them, including 91,313 with verified work emails and 116,954 with mobile numbers. New York is the largest hub.

This list covers marketing consultants 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

57,131Companies

342,571Contacts tracked

91,313Verified emails

116,954Mobile numbers

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The 25 largest marketing consultants based in the United States

Ranked by team size

Top 25 of 57,131 marketing consultants 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 marketing consultants: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Digitas North America	Indirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,654 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 5, 2026
2	Frost & Sullivan	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,330 contacts →
	Indirect evidence “For over six decades, Frost & Sullivan has helped the world’s top companies toward transformational growth journeys that result in a stream of innovative growth opportunities.” Source: RevenueBase Database · checked Sep 5, 2026
3	Razorfish	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,763 contacts →
	Indirect evidence “Hi there!” Source: RevenueBase Database · checked Sep 5, 2026
4	Omnicom	Partial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	10001+	1,727 contacts →
	Partial evidence “Omnicom is the world’s leading marketing and sales company, built for intelligent growth in the next era.” Source: RevenueBase Database · checked Sep 5, 2026
5	Power Digital Marketing	Partial evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	501-1,000	1,570 contacts →
	Partial evidence “Power Digital is a growth marketing firm fueled by technology and driven by a talented team of consultative marketers, creatives, analysts and technologists.” Source: RevenueBase Database · checked Sep 5, 2026
6	W3global	Indirect evidence	Frisco, TX, United StatesHQ checked Sep 5, 2026	501-1,000	1,149 contacts →
	Indirect evidence “W3Global is a leading provider of end-to-end consulting services, empowering businesses to achieve their strategic goals and optimize their operations.” Source: RevenueBase Database · checked Sep 5, 2026
7	NP Digital	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	866 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 5, 2026
8	Essence	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	782 contacts →
	Indirect evidence “Formerly Essence, we are now EssenceMediacom.” Source: RevenueBase Database · checked Sep 5, 2026
9	Lucas Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	10001+	756 contacts →
	Partial evidence “Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Source: RevenueBase Database · checked Sep 5, 2026
10	Abstrakt Marketing Group	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 5, 2026	501-1,000	724 contacts →
	Indirect evidence “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Source: RevenueBase Database · checked Sep 5, 2026
11	SEI	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 5, 2026	501-1,000	618 contacts →
	Indirect evidence “SEI is a management consulting firm delivering fresh perspectives and reliable results.” Source: RevenueBase Database · checked Sep 5, 2026
12	Vertis Communications	Indirect evidence	Sussex, WI, United StatesHQ checked Sep 5, 2026	10001+	605 contacts →
	Indirect evidence “Vertis Communications was acquired by Quad/Graphics in January 2013.” Source: RevenueBase Database · checked Sep 5, 2026
13	Iquanti	Partial evidence	Jersey City, NJ, United StatesHQ checked Sep 5, 2026	501-1,000	538 contacts →
	Partial evidence “iQuanti was founded to deliver on the promise of high-performance digital marketing, combining deep analytics, proprietary technology, and a results-driven approach.” Source: RevenueBase Database · checked Sep 5, 2026
14	Allied Market Research	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 5, 2026	501-1,000	508 contacts →
	Indirect evidence “Driven by innovation and value addition approach, Allied Market Research is instrumental in market research and business consulting across various industry verticals since its…” Source: RevenueBase Database · checked Sep 5, 2026
15	Amsive	Partial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	501-1,000	488 contacts →
	Partial evidence “Amsive is a data-driven performance marketing agency that enhances marketing ROI through innovative customer acquisition and engagement solutions.” Source: RevenueBase Database · checked Sep 5, 2026
16	Mavlers	Partial evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	501-1,000	488 contacts →
	Partial evidence “At Mavlers, we’re more than just a digital marketing and technology partner-we’re your behind-the-scenes powerhouse.” Source: RevenueBase Database · checked Sep 5, 2026
17	Sg360	Indirect evidence	Wheeling, IL, United StatesHQ checked Sep 5, 2026	501-1,000	477 contacts →
	Indirect evidence “sg360° can help you identify and connect with your best prospects 1:1, both offline and on.” Source: RevenueBase Database · checked Sep 5, 2026
18	AMP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	501-1,000	450 contacts →
	Indirect evidence “Today’s best brands don’t just generate attention-they earn it, and they know how to convert it.” Source: RevenueBase Database · checked Sep 5, 2026
19	Product Connections	Partial evidence	Bentonville, AR, United StatesHQ checked Sep 5, 2026	10001+	387 contacts →
	Partial evidence “Product Connections (PCX) is a full-service marketing agency built to move fast and deliver.” Source: RevenueBase Database · checked Sep 5, 2026
20	marketing.com	Partial evidence	Eureka, MO, United StatesHQ checked Sep 5, 2026	1,001-5,000	309 contacts →
	Partial evidence “From click to print and everything in between, we’re not changing marketing, just how it’s done.” Source: RevenueBase Database · checked Sep 5, 2026
21	Front ROW	Indirect evidence	New York, CA, United StatesHQ checked Sep 5, 2026	501-1,000	292 contacts →
	Indirect evidence “Front Row is a growth partner that helps brands lead on marketplaces and win in commerce.” Source: RevenueBase Database · checked Sep 5, 2026
22	The Integer Group	Indirect evidence	Denver, CO, United StatesHQ checked Sep 5, 2026	1,001-5,000	234 contacts →
	Indirect evidence “We are the Growth Company.” Source: RevenueBase Database · checked Sep 5, 2026
23	Metasys Technologies	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	501-1,000	217 contacts →
	Partial evidence “Metasys is a global digital consulting firm that specializes in delivering solutions across a variety of business functions, including HR, Procurement, Marketing, Finance, and…” Source: RevenueBase Database · checked Sep 5, 2026
24	IVIE	Partial evidence	Flower Mound, TX, United StatesHQ checked Sep 5, 2026	501-1,000	147 contacts →
	Partial evidence “Ivie is a global marketing company existing to provide a higher level of service at a lower cost.” Source: RevenueBase Database · checked Sep 5, 2026
25	Knowledgebase Marketing	Partial evidence	Richardson, TX, United StatesHQ checked Sep 5, 2026	501-1,000	141 contacts →
	Partial evidence “KnowledgeBase Marketing is now KBM Group!” Source: RevenueBase Database · checked Sep 5, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: marketing consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names marketing consultants.
Partial evidence: Its own public description names part of marketing consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marketing consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 57,131 marketing consultants based in the United States

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Marketing consultants based in the United States at a glance

As of Sep 5, 2026

26.7%Verified-email coverage

34.1%Mobile-number coverage

6.0Average contacts per company

1-10Median size (employees)

4.5%Largest-city concentration · New York

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

44,174

11-50

10,948

51-200

1,548

201-500

281

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

84,9770–30

5,46231–60

3861–90

5090–180

786180+

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 consultants, 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 “marketing consultants”. 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 marketing consultants), 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 marketing consultants, 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, 91,313 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 consultants by metro

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 marketing consultants, 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 marketing consultants are there based in the United States?

RevenueBase identified 57,131 marketing consultants 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?

Digitas North America, headquartered in Boston, tops this list with the largest team on record.

Which city has the most marketing consultants?

New York leads with 2592 headquartered companies, followed by Los Angeles (1621) and Chicago (1180).

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 91,313 verified decision-maker contacts tracked across these 57,131 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.