Company lists · Data refreshed September 2026

Top 25 Industrial engineering firms based in the United States

RevenueBase identified 7,207 industrial engineering firms headquartered in the United States as of September 2026 and tracks 243,380 professional contacts across them, including 95,791 with verified work emails. Houston is the largest hub.

This list covers industrial engineering 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 17, 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 17, 2026 86% judged on-target in blind review
7,207Companies
243,380Contacts tracked
95,791Verified emails
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The 25 largest industrial engineering firms based in the United States

Ranked by team size
Top 25 of 7,207 industrial engineering firms based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial engineering firms: 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 evidenceNeenah, NC, United StatesHQ checked Sep 17, 202610001+8,149 contacts →

Indirect evidence

“Since 1979, Plexus has been partnering with companies to create the products that build a better world.”

Source: RevenueBase Database · checked Sep 17, 2026
2Partial evidenceOlathe, KS, United StatesHQ checked Sep 17, 20265,001-10,0006,113 contacts →

Partial evidence

“Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.”

Source: RevenueBase Database · checked Sep 17, 2026
3Indirect evidenceHailey, ID, United StatesHQ checked Sep 17, 20261,001-5,0004,013 contacts →

Indirect evidence

“POWER Engineers is now part of WSP.”

Source: RevenueBase Database · checked Sep 17, 2026
4Partial evidenceLisle, IL, United StatesHQ checked Sep 17, 20261,001-5,0002,966 contacts →

Partial evidence

“ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…”

Source: RevenueBase Database · checked Sep 17, 2026
5Partial evidenceJacksonville, FL, United StatesHQ checked Sep 17, 20261,001-5,0002,213 contacts →

Partial evidence

“Haskell delivers over $3 billion annually in Architecture, Engineering, Construction (AEC) and Consulting solutions to assure certainty of outcome for complex capital projects…”

Source: RevenueBase Database · checked Sep 17, 2026
6Partial evidenceChantilly, VA, United StatesHQ checked Sep 17, 20261,001-5,0002,210 contacts →

Partial evidence

“ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.”

Source: RevenueBase Database · checked Sep 17, 2026
7Indirect evidenceParsippany, NJ, United StatesHQ checked Sep 17, 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 17, 2026
8Partial evidenceRock Island, IL, United StatesHQ checked Sep 17, 20261,001-5,0001,985 contacts →

Partial evidence

“Leaders in Engineering and Innovation.”

Source: RevenueBase Database · checked Sep 17, 2026
9Partial evidenceReston, VA, United StatesHQ checked Sep 17, 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 17, 2026
10Partial evidenceAlbany, NY, United StatesHQ checked Sep 17, 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 17, 2026
11Indirect evidenceWoburn, MA, United StatesHQ checked Sep 17, 20261,001-5,0001,604 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
12Partial evidenceToledo, OH, United StatesHQ checked Sep 17, 20261,001-5,0001,603 contacts →

Partial evidence

“As an internationally ranked architecture and engineering firm, SSOE is known for delivering unparalleled client value that advances the AEC industry.”

Source: RevenueBase Database · checked Sep 17, 2026
13Partial evidenceHouston, TX, United StatesHQ checked Sep 17, 20261,001-5,0001,595 contacts →

Partial evidence

“alliant is the nation's premier consulting and management engineering firm.”

Source: RevenueBase Database · checked Sep 17, 2026
14Partial evidenceMenlo Park, CA, United StatesHQ checked Sep 17, 20261,001-5,0001,560 contacts →

Partial evidence

“In an era of accelerating change, Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most…”

Source: RevenueBase Database · checked Sep 17, 2026
15Indirect evidenceSt Louis, MO, United StatesHQ checked Sep 17, 20261,001-5,0001,555 contacts →

Indirect evidence

“BW Design Group is the only independent, fully integrated AEC firm powered by a Manufacturer's Mindset™.”

Source: RevenueBase Database · checked Sep 17, 2026
16Partial evidenceSeattle, WA, United StatesHQ checked Sep 17, 20261,001-5,0001,487 contacts →

Partial evidence

“KPFF is a multi-office, multi-discipline engineering firm.”

Source: RevenueBase Database · checked Sep 17, 2026
17Strong evidenceLexington, KY, United StatesHQ checked Sep 17, 20261,001-5,0001,477 contacts →

Strong evidence

“Founded by James Norris and Lois Howard Gray in 1960, Gray is a family-owned, fully integrated industrial design-builder specializing in engineering, architecture, construction…”

Source: RevenueBase Database · checked Sep 17, 2026
18Strong evidenceBaton Rouge, LA, United StatesHQ checked Sep 17, 20261,001-5,0001,384 contacts →

Strong evidence

“ISC is an industrial engineering and construction company specializing in comprehensive electrical, instrumentation, and controls solutions.”

Source: RevenueBase Database · checked Sep 17, 2026
19Indirect evidenceHouston, TX, United StatesHQ checked Sep 17, 20261,001-5,0001,298 contacts →

Indirect evidence

“Welcome to Walter P Moore!”

Source: RevenueBase Database · checked Sep 17, 2026
20Indirect evidenceCarmel, IN, United StatesHQ checked Sep 17, 20261,001-5,0001,262 contacts →

Indirect evidence

“Bastian Solutions, a Toyota Automated Logistics company, is a trusted supply chain integration partner committed to providing their clients a competitive advantage by designing…”

Source: RevenueBase Database · checked Sep 17, 2026
21Indirect evidenceMobile, AL, United StatesHQ checked Sep 17, 20261,001-5,0001,199 contacts →

Indirect evidence

“Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…”

Source: RevenueBase Database · checked Sep 17, 2026
22Indirect evidenceCumming, GA, United StatesHQ checked Sep 17, 2026501-1,0001,107 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
23Partial evidenceMinneapolis, MN, United StatesHQ checked Sep 17, 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 17, 2026
24Indirect evidenceElgin, IL, United StatesHQ checked Sep 17, 20261,001-5,0001,050 contacts →

Indirect evidence

“DGSTS, Inc.”

Source: RevenueBase Database · checked Sep 17, 2026
25Partial evidenceEast Peoria, IL, United StatesHQ checked Sep 17, 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 17, 2026

Showing 25 of 7,207 industrial engineering firms based in the United States

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Industrial engineering firms based in the United States at a glance

As of Sep 17, 2026
39.4%Verified-email coverage
33.8Average contacts per company
1-10Median size (employees)
2.8%Largest-city concentration · Houston
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
3,759
11-50
2,266
51-200
837
201-500
206
501-1,000
66
1,001-5,000
51
5,001-10,000
3
10001+
8

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 7,207 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 industrial engineering 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 “industrial engineering 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 industrial engineering 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 industrial engineering 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, 95,791 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 17, 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.

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 industrial engineering 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 industrial engineering firms are there based in the United States?

RevenueBase identified 7,207 industrial engineering 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?

Plexus Corp, headquartered in Raleigh, tops this list with the largest team on record.

Which city has the most industrial engineering firms?

Houston leads with 202 headquartered companies, followed by New York (110) and Atlanta (94).

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 95,791 verified decision-maker contacts tracked across these 7,207 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 17, 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.