Company lists · Data refreshed September 2026
Top 25 Direct marketing firms based in the United States
RevenueBase identified 3,766 direct marketing firms headquartered in the United States as of September 2026 and tracks 48,604 professional contacts across them, including 11,559 with verified work emails. New York is the largest hub.
This list covers direct marketing firms 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 21, 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.
The 25 largest direct marketing firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,359 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 866 contacts → | ||||
Partial evidence “IWCO has served the needs of North American direct marketers for more than 50 years.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 750 contacts → | ||||
Partial evidence “In an ERA of new and emerging digital mediums, we align our core expertise of today’s ever-changing technology with a clear understanding of traditional marketing methods without…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 740 contacts → | ||||
Indirect evidence “Data Driven.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 696 contacts → | ||||
Indirect evidence “SCI was merged and sold to WPP in 2010.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 557 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 539 contacts → | ||||
Indirect evidence “Founded in 1978, ALC has grown to become one of the industry's leading privately-held providers of first-party data, mailer and catalog services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 491 contacts → | ||||
Partial evidence “We help companies grow their business, drive brand awareness and achieve their marketing goals.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 442 contacts → | ||||
Partial evidence “Mspark is a results-driven marketing partner built for accountability.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 426 contacts → | ||||
Partial evidence “At Smart Circle, our goal is to provide our clients with access to customized face-to- face marketing and sales solutions by connecting our clients with a dynamic network of…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 379 contacts → | ||||
Strong evidence “Money Mailer is recognized as a leader in the direct marketing industry, delivering local deals to neighborhoods since 1979.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 315 contacts → | ||||
Partial evidence “Targetbase is a precision marketing agency obsessed with performance-our clients’ and our own.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 297 contacts → | ||||
Partial evidence “UnboundB2B is a marketing agency that caters to Enterprise and Technology companies across the globe to improve ROI on their marketing spend and shorten sales cycle with its…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 285 contacts → | ||||
Strong evidence “PostcardMania is a full-service postcard direct mail marketing company and the leader in innovation in the postcard marketing industry.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 279 contacts → | ||||
Indirect evidence “For more than 30 years, The Lacek Group has been perfecting the art and algorithms of brand devotion.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 261 contacts → | ||||
Indirect evidence “Our clients navigate increasingly complex multi-channel communication environments.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 251 contacts → | ||||
Partial evidence “Great marketing takes so much more than just delivering the right message at the right time - it’s about making real connections with real people.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 245 contacts → | ||||
Partial evidence “ENPOINTE works with some of the most impactful brands across industries helping them create marketing solutions that drive results and solve business problems.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 221 contacts → | ||||
Partial evidence “At Brunner, we only believe in one kind of marketing, the kind that drives results.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 212 contacts → | ||||
Strong evidence “TPG Direct We are experts in multi-channel customer acquisition who help our clients make complex targeting decisions, optimize marketing investment and generate profitable growth.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 211 contacts → | ||||
Partial evidence “PlusOne Company is a unique sales center, providing the highest conversion rates in the competitive Direct Response industry.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 209 contacts → | ||||
Indirect evidence “Note: Grand no longer exists.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 208 contacts → | ||||
Partial evidence “Marketing that Drives Results!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: direct marketing firms. 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 direct marketing firms.
- Partial evidence
- Its own public description names part of direct marketing firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name direct marketing firms. 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 3,766 direct marketing firms based in the United States
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Direct marketing firms based in the United States at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,766 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 direct marketing firms, 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 “direct marketing firms”. 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 direct marketing firms), 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 direct marketing firms, 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, 11,559 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 21, 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.
Direct marketing firms by metro
- Direct marketing firms in New York109
- Direct marketing firms in Chicago67
- Direct marketing firms in Los Angeles65
- Direct marketing firms in Houston53
- Direct marketing firms in Miami53
- Direct marketing firms in Atlanta48
- Direct marketing firms in Dallas47
- Direct marketing firms in Tampa42
- Direct marketing firms in San Diego41
- Direct marketing firms in Austin39
- Direct marketing firms in Charlotte38
- Direct marketing firms in Denver38
- Direct marketing firms in Phoenix33
- Direct marketing firms in Orlando32
- Direct marketing firms in Las Vegas29
- Direct marketing firms in San Francisco29
- Direct marketing firms in Wilmington27
- Direct marketing firms in Portland25
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 direct marketing firms, 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 direct marketing firms are there based in the United States?
RevenueBase identified 3,766 direct marketing firms 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?
Hearts & Science, headquartered in New York, tops this list with the largest team on record.
Which city has the most direct marketing firms?
New York leads with 109 headquartered companies, followed by Chicago (67) and Los Angeles (65).
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 11,559 verified decision-maker contacts tracked across these 3,766 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 21, 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.
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