Company lists · Data refreshed September 2026

Top 25 Infrastructure policy consulting firms based in the United States

RevenueBase identified 4,830 infrastructure policy consulting firms headquartered in the United States as of September 2026 and tracks 382,336 professional contacts across them, including 169,147 with verified work emails. Washington is the largest hub.

This list covers infrastructure policy consulting 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 28, 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 28, 2026 86% judged on-target in blind review
4,830Companies
382,336Contacts tracked
169,147Verified emails
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The 25 largest infrastructure policy consulting firms based in the United States

Ranked by team size
Top 25 of 4,830 infrastructure policy consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure policy consulting 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
1Partial evidenceDallas, TX, United StatesHQ checked Sep 28, 202610001+63,914 contacts →

Partial evidence

“AECOM is the global infrastructure leader, committed to delivering a better world.”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidenceDallas, TX, United StatesHQ checked Sep 28, 202610001+46,351 contacts →

Indirect evidence

“At Jacobs, we're challenging today to reinvent tomorrow – delivering outcomes and solutions for the world's most complex challenges.”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidencePasadena, CA, United StatesHQ checked Sep 28, 202610001+12,999 contacts →

Partial evidence

“Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceOverland Park, KS, United StatesHQ checked Sep 28, 202610001+10,851 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 202610001+9,318 contacts →

Indirect evidence

“What if you could shape built and natural environments – and the future of those that use them?”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 28, 202610001+7,706 contacts →

Indirect evidence

“URS Corporation operations are now affiliated with AECOM.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceKansas City, MO, United StatesHQ checked Sep 28, 20265,001-10,0007,469 contacts →

Partial evidence

“For over a century, HNTB has shaped the built environment with distinctive expertise across a full spectrum of infrastructure solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceWindsor, CT, United StatesHQ checked Sep 28, 20265,001-10,0007,017 contacts →

Indirect evidence

“TRC, a member of WSP, stands for adaptability.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceOlathe, KS, United StatesHQ checked Sep 28, 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 28, 2026
10Strong evidencePittsburgh, PA, United StatesHQ checked Sep 28, 20265,001-10,0004,362 contacts →

Strong evidence

“Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceBethesda, MD, United StatesHQ checked Sep 28, 20265,001-10,0003,741 contacts →

Partial evidence

“DAI is an integrated professional services and advisory firm that provides project design and delivery, management consulting, and financial services to companies, investors, and…”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20261,001-5,0003,556 contacts →

Partial evidence

“STV offers professional services for the infrastructure that powers our lives.”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 28, 20261,001-5,0003,067 contacts →

Partial evidence

“As a global engineering firm, we design infrastructure solutions that connect and elevate communities.”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceBaton Rouge, LA, United StatesHQ checked Sep 28, 20261,001-5,0002,639 contacts →

Indirect evidence

“APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living.”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceBoca Raton, FL, United StatesHQ checked Sep 28, 20261,001-5,0002,393 contacts →

Partial evidence

“Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 28, 20261,001-5,0002,344 contacts →

Indirect evidence

“At Kleinfelder, we have been connecting great people to the best work since 1961.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceSparks, NC, United StatesHQ checked Sep 28, 20261,001-5,0002,207 contacts →

Partial evidence

“KCI is a 100-percent employee-owned engineering, consulting and construction firm serving clients throughout the United States and beyond.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceLincoln, NE, United StatesHQ checked Sep 28, 20261,001-5,0002,108 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceRock Island, IL, United StatesHQ checked Sep 28, 20261,001-5,0001,985 contacts →

Indirect evidence

“Leaders in Engineering and Innovation.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceMorristown, NJ, United StatesHQ checked Sep 28, 20261,001-5,0001,892 contacts →

Indirect evidence

“Louis Berger was acquired by WSP.”

Source: RevenueBase Database · checked Sep 28, 2026
21Strong evidenceServing Clients Across The Us, MD, United StatesHQ checked Sep 28, 20261,001-5,0001,688 contacts →

Strong evidence

“Johnson, Mirmiran & Thompson is an employee owned, multi-disciplined firm offering a full array of planning, design, and construction phase consulting services for infrastructure…”

Source: RevenueBase Database · checked Sep 28, 2026
22Partial evidenceReston, VA, United StatesHQ checked Sep 28, 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 28, 2026
23Indirect evidencePlano, TX, United StatesHQ checked Sep 28, 20261,001-5,0001,661 contacts →

Indirect evidence

“At Westwood, our purpose is to create a better world for people through our work.”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceAlbany, NY, United StatesHQ checked Sep 28, 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 28, 2026
25Partial evidencePhoenix, AZ, United StatesHQ checked Sep 28, 20261,001-5,0001,629 contacts →

Partial evidence

“Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 4,830 infrastructure policy consulting firms based in the United States

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Infrastructure policy consulting firms based in the United States at a glance

As of Sep 28, 2026
44.2%Verified-email coverage
79.2Average contacts per company
1-10Median size (employees)
6.1%Largest-city concentration · Washington
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
2,708
11-50
1,270
51-200
547
201-500
130
501-1,000
67
1,001-5,000
76
5,001-10,000
8
10001+
18

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 4,830 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 infrastructure policy consulting 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 “infrastructure policy consulting 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 infrastructure policy consulting 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 infrastructure policy consulting 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, 169,147 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 28, 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 infrastructure policy consulting 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 infrastructure policy consulting firms are there based in the United States?

RevenueBase identified 4,830 infrastructure policy consulting 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?

AECOM, headquartered in Dallas, tops this list with the largest team on record.

Which city has the most infrastructure policy consulting firms?

Washington leads with 293 headquartered companies, followed by New York (165) and Houston (136).

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 169,147 verified decision-maker contacts tracked across these 4,830 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 28, 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.