Company lists · Data refreshed September 2026

Top 20 Integrated marketing agencies based in Boston, United States

Name: Integrated marketing agencies based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 272 companies tracked

RevenueBase identified 272 integrated marketing agencies headquartered in Boston, United States as of September 2026 and tracks 6,948 professional contacts across them, including 2,555 with verified work emails. New York is the largest hub.

This list covers integrated marketing agencies headquartered in Boston, 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 4, 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 4, 2026 86% judged on-target in blind review

272Companies

6,948Contacts tracked

2,555Verified emails

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The 20 largest integrated marketing agencies based in Boston, United States

Ranked by team size

Top 20 of 272 integrated marketing agencies based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names integrated marketing agencies: 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.
#	Company	Headquarters	Employees	Contacts
1	Digitas North AmericaIndirect evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	1,001-5,000	2,692
	“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 4, 2026
2	829 StudiosPartial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	201-500	256
	“We are your partner in performance, delivering tech-enabled, full-service digital marketing solutions optimized to elevate your business.” Source: company website · checked Sep 4, 2026
3	Hill HollidayIndirect evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	201-500	247
	“At Hill Holliday, we help our clients fight the daily share battle with ideas that win.” Source: company website · checked Sep 4, 2026
4	Gupta MediaIndirect evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	51-200	207
	“We are problem solvers by nature.” Source: company website · checked Sep 4, 2026
5	Text100 NOW ArchetypeIndirect evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	501-1,000	206
	“Text100 & Bite are now Archetype.” Source: company website · checked Sep 4, 2026
6	GroupeconnectIndirect evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	201-500	153
	“We’re a team of top talent from across Publicis Groupe, bringing our unique perspectives, skills and problem-solving styles together to work as one powerful, full-service…” Source: company website · checked Sep 4, 2026
7	360prplusIndirect evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	51-200	80
	“We are a team of sophisticated marketers, savvy storytellers and passionate brand fans who work across every platform online and off, all in an agency that’s built for today’s…” Source: company website · checked Sep 4, 2026
8	Belfort GroupStrong evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	11-50	80
	“Belfort Group is a Boston-based integrated marketing, PR, and creative agency.” Source: company website · checked Sep 4, 2026
9	GenuinePartial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	51-200	78
	“Genuine is a digital marketing agency that lives up to its name.” Source: company website · checked Sep 4, 2026
10	451 AgencyStrong evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	51-200	72
	“451 Agency is an award-winning, fully integrated marketing, advertising, and communications agency that specializes in creative design, advertising, public relations, digital…” Source: company website · checked Sep 4, 2026
11	OverdriveIndirect evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	51-200	67
	“Overdrive is a full-service digital agency built for brands that need more than vendor support-they need strategic firepower and operational efficiency.” Source: company website · checked Sep 4, 2026
12	Greenough CommunicationsPartial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	11-50	56
	“Greenough provides brand marketing and communications for the moments that matter and specializes in creating the moments in between.” Source: company website · checked Sep 4, 2026
13	TribalvisionPartial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	51-200	44
	“TribalVision is a full-service digital marketing agency that provides outsourced marketing services to organizations looking to accelerate top-line growth.” Source: company website · checked Sep 4, 2026
14	TidesmartStrong evidence	Boston, United StatesHQ checked Sep 4, 2026	51-200	30
	“TideSmart Global is one of the nation’s largest and most respected independent integrated marketing groups.” Source: company website · checked Sep 4, 2026
15	Marlo MarketingPartial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	11-50	30
	“Integrated.” Source: company website · checked Sep 4, 2026
16	CM CommunicationsPartial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	1-10	27
	“Founded in 1986 and recognized as a leading marketing and public relations agency in Boston, CM Communications is a full-service marketing agency providing marketing consulting…” Source: company website · checked Sep 4, 2026
17	The ImaginariumPartial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	11-50	26
	“The Imaginarium is a full-service strategy, customer experience, creative, and digital marketing agency driven by hospitality, excellence, and accountability.” Source: company website · checked Sep 4, 2026
18	Zozimus AgencyIndirect evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	11-50	24
	“We understand that you can’t jam a prescriptive service down someone’s throat just because it fits your agenda.” Source: company website · checked Sep 4, 2026
19	Three Rings INCPartial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	11-50	22
	“Three Rings provides a full spectrum of PR, marketing and digital services to B2B technology clients worldwide.” Source: company website · checked Sep 4, 2026
20	Wave CollectivePartial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	11-50	20
	“Wave Collective, based in South Boston, operates through four key divisions: Media Relations, Influencer Marketing, Paid + Organic Social Media Management, and Creative Services.” Source: company website · checked Sep 4, 2026

Showing 20 of 272 integrated marketing agencies based in Boston, United States

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Integrated marketing agencies based in Boston, United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 1603 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

171

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 272 companies.

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 integrated marketing agencies, 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 Boston, United States whose own description of what they do matches “integrated marketing agencies”. 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 integrated marketing agencies, and records with no verified work email. Companies headquartered outside Boston 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, 2,555 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 4, 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.

Integrated marketing agencies by metro in the United States

Frequently asked

How many integrated marketing agencies are there based in Boston, United States?

RevenueBase identified 272 integrated marketing agencies headquartered in Boston, 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 integrated marketing agencies?

New York leads with 1603 headquartered companies, followed by Los Angeles (1032) and Miami (670).

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 2,555 verified decision-maker contacts tracked across these 272 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 4, 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.