Company lists · Data refreshed September 2026

Top 25 Engineering services marketing agencies based in the United States

RevenueBase identified 25,798 engineering services marketing agencies headquartered in the United States as of September 2026 and tracks 254,459 professional contacts across them, including 95,240 with verified work emails and 97,558 with mobile numbers. New York is the largest hub.

This list covers engineering services marketing agencies 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 29, 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 29, 2026 86% judged on-target in blind review
25,798Companies
254,459Contacts tracked
95,240Verified emails
97,558Mobile numbers
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The 25 largest engineering services marketing agencies based in the United States

Ranked by team size
Top 25 of 25,798 engineering services marketing agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to engineering services marketing agencies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceParsippany, NJ, United StatesHQ checked Sep 29, 20261,001-5,0002,177 contacts →

Indirect evidence

“Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.”

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidenceLincoln, NE, United StatesHQ checked Sep 29, 20261,001-5,0002,108 contacts →

Partial evidence

“Olsson is an engineering firm made up of people who craft expert solutions and designs that improve communities.”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceRock Island, IL, United StatesHQ checked Sep 29, 20261,001-5,0001,985 contacts →

Partial evidence

“Leaders in Engineering and Innovation.”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceHouston, TX, United StatesHQ checked Sep 29, 20261,001-5,0001,932 contacts →

Indirect evidence

“Employee-Owned.”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceReston, VA, United StatesHQ checked Sep 29, 20261,001-5,0001,666 contacts →

Partial evidence

“Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceAlbany, NY, United StatesHQ checked Sep 29, 20261,001-5,0001,639 contacts →

Partial evidence

“CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceWoburn, MA, United StatesHQ checked Sep 29, 20261,001-5,0001,604 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
8Partial evidenceOrlando, FL, United StatesHQ checked Sep 29, 20261,001-5,0001,595 contacts →

Partial evidence

“UES provides professional engineering, environmental, testing and inspection services to clients across the United States.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceKent, OH, United StatesHQ checked Sep 29, 20261,001-5,0001,395 contacts →

Indirect evidence

“Davey Resource Group, Inc.(DRG) provides innovative consulting and field services that support utility infrastructure and environmental stewardship.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceTorrance, CA, United StatesHQ checked Sep 29, 20261,001-5,0001,358 contacts →

Indirect evidence

“Partner Assessment Corp.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceBaltimore, MD, United StatesHQ checked Sep 29, 2026n/a1,255 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceMinneapolis, MN, United StatesHQ checked Sep 29, 20261,001-5,0001,088 contacts →

Partial evidence

“Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceEast Peoria, IL, United StatesHQ checked Sep 29, 20261,001-5,000979 contacts →

Partial evidence

“ARi is a global engineering firm headquartered in East Peoria, Illinois, USA offering services for: Embedded Software, Product Engineering, Manufacturing Engineering and Testing &…”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceLake Oswego, OR, United StatesHQ checked Sep 29, 2026501-1,000899 contacts →

Indirect evidence

“Logical Position (LP) is an Inc.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceHarrisburg, PA, United StatesHQ checked Sep 29, 2026501-1,000866 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 29, 20261,001-5,000866 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 29, 2026
17Indirect evidenceSeattle, WA, United StatesHQ checked Sep 29, 2026501-1,000859 contacts →

Indirect evidence

“The right team is more than an advantage.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceCarlsbad, CA, United StatesHQ checked Sep 29, 2026n/a825 contacts →

Indirect evidence

“Since its inception in 1997, SEO Inc.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceAkron, OH, United StatesHQ checked Sep 29, 2026501-1,000786 contacts →

Indirect evidence

“Founded in 1961, GPD Group (GPD) has grown from only a handful of people to over 870 professionals in 14 offices located in Akron, Atlanta, Cleveland, Columbus, Dallas…”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceRaleigh, NC, United StatesHQ checked Sep 29, 20261,001-5,000707 contacts →

Indirect evidence

“Tower Engineer Professionals was founded in 1997 by two tower-climbing engineers.”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidenceGolden, CO, United StatesHQ checked Sep 29, 2026201-500696 contacts →

Indirect evidence

“ME Engineers has earned a reputation as a global leader in the design of innovative MEPT systems that bring to life the world's most innovative sports and entertainment venues.”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceCedar Rapids, IA, United StatesHQ checked Sep 29, 2026501-1,000673 contacts →

Indirect evidence

“Founded in 1913, HR Green provides solutions that build communities and improve lives for our clients and the people they serve.”

Source: RevenueBase Database · checked Sep 29, 2026
23Partial evidenceSyracuse, NY, United StatesHQ checked Sep 29, 2026501-1,000657 contacts →

Partial evidence

“Founded in 1968, the C&S Companies are known nationwide for client-focused engineering, architecture, planning, environmental, and construction services.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceNormal, IL, United StatesHQ checked Sep 29, 2026501-1,000654 contacts →

Indirect evidence

“Farnsworth Group is a leading employee-owned full-service design firm, with 650-plus professionals across the United States.”

Source: RevenueBase Database · checked Sep 29, 2026
25Partial evidenceBaltimore, MD, United StatesHQ checked Sep 29, 2026501-1,000601 contacts →

Partial evidence

“Established in 1915, WRA is a nationally-recognized engineering, architectural and environmental planning firm with a reputation for delivering exceptional work on time and within…”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 25,798 engineering services marketing agencies based in the United States

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Engineering services marketing agencies based in the United States at a glance

As of Sep 29, 2026
37.4%Verified-email coverage
38.3%Mobile-number coverage
9.9Average contacts per company
1-10Median size (employees)
3.5%Largest-city concentration · New York
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
18,136
11-50
6,171
51-200
1,174
201-500
200
501-1,000
44
1,001-5,000
30
10001+
13

Freshness & accuracy

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

Email last verified

Median 31.0d

Company record updated

Median 92.0d

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 engineering services marketing agencies, 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 “engineering services marketing agencies”. 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 engineering services marketing agencies), 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 engineering services marketing agencies, 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, 95,240 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 29, 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.

Engineering services marketing agencies 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 engineering services marketing agencies, 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 engineering services marketing agencies are there based in the United States?

RevenueBase identified 25,798 engineering services marketing agencies 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?

Langan Engineering & Environmental Services, headquartered in Parsippany, tops this list with the largest team on record.

Which city has the most engineering services marketing agencies?

New York leads with 908 headquartered companies, followed by Los Angeles (532) and Houston (492).

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 95,240 verified decision-maker contacts tracked across these 25,798 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 29, 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.