Company lists · Data refreshed September 2026

Top 25 Engineering consultancy companies based in the United States

Name: Engineering consultancy companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 13,069 companies tracked

RevenueBase identified 13,069 company matches for engineering consultancy companies associated with the United States as of September 2026 and tracks 693,665 professional contacts across them, including 304,692 with verified work emails and 266,009 with mobile numbers. Houston is the largest hub.

This list covers company matches for engineering consultancy companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 24, 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 RevenueBase SmartSearch · Exact Recorded Sep 24, 2026 How this list was built

13,069Companies

693,665Contacts tracked

304,692Verified emails

266,009Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest engineering consultancy companies based in the United States

Ranked by team size

Top 25 of 13,069 company matches for engineering consultancy companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	AECOM	Exact match	Dallas, TX, United StatesHQ recorded Sep 24, 2026	10001+	63,914 contacts →
	Exact match “AECOM is the global infrastructure leader, committed to delivering a better world.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	Jacobs	Exact match	Dallas, TX, United StatesHQ recorded Sep 24, 2026	10001+	46,351 contacts →
	Exact match “At Jacobs, we're challenging today to reinvent tomorrow – delivering outcomes and solutions for the world's most complex challenges.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	Fluor Corporation	Exact match	Irving, TX, United StatesHQ recorded Sep 24, 2026	10001+	33,084 contacts →
	Exact match “Fluor Corporation is a global engineering, procurement and construction company.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
4	Bechtel Corporation	Exact match	Reston, VA, United StatesHQ recorded Sep 24, 2026	10001+	25,068 contacts →
	Exact match “Bechtel is a trusted engineering, construction and project management partner to industry and government.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
5	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Sep 24, 2026	10001+	12,999 contacts →
	Exact match “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	Black & Veatch	Exact match	Overland Park, KS, United StatesHQ recorded Sep 24, 2026	10001+	10,851 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	WSP In The U.S	Exact match	New York, NY, United StatesHQ recorded Sep 24, 2026	10001+	9,318 contacts →
	Exact match “What if you could shape built and natural environments – and the future of those that use them?” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
8	URS Corporation, An Aecom Company	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	10001+	7,706 contacts →
	Exact match “URS Corporation operations are now affiliated with AECOM.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
9	CDM Smith	Exact match	Boston, MA, United StatesHQ recorded Sep 24, 2026	5,001-10,000	7,527 contacts →
	Exact match “CDM Smith is shaping what’s next, now, with world class solutions in water, environment, transportation and energy to public and private clients worldwide.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
10	HNTB	Exact match	Kansas City, MO, United StatesHQ recorded Sep 24, 2026	5,001-10,000	7,469 contacts →
	Exact match “For over a century, HNTB has shaped the built environment with distinctive expertise across a full spectrum of infrastructure solutions.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
11	TRC Companies, INC	Exact match	Windsor, CT, United StatesHQ recorded Sep 24, 2026	5,001-10,000	7,017 contacts →
	Exact match “TRC, a member of WSP, stands for adaptability.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
12	Hill International, INC	Exact match	Mount Laurel, NJ, United StatesHQ recorded Sep 24, 2026	1,001-5,000	6,653 contacts →
	Exact match “Hill International provides program, project, and construction management services for clients in a range of sectors undertaking major construction projects across the world.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
13	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Sep 24, 2026	5,001-10,000	6,113 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
14	Michael Baker International	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 24, 2026	5,001-10,000	4,362 contacts →
	Exact match “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
15	Sargent & Lundy	Exact match	Chicago, WY, United StatesHQ recorded Sep 24, 2026	1,001-5,000	4,156 contacts →
	Exact match “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
16	DAI	Exact match	Bethesda, MD, United StatesHQ recorded Sep 24, 2026	5,001-10,000	3,741 contacts →
	Exact match “DAI is an integrated professional services and advisory firm that provides project design and delivery, management consulting, and financial services to companies, investors, and…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
17	STV	Exact match	New York, NY, United StatesHQ recorded Sep 24, 2026	1,001-5,000	3,556 contacts →
	Exact match “STV offers professional services for the infrastructure that powers our lives.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
18	TYLIN	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	3,067 contacts →
	Exact match “As a global engineering firm, we design infrastructure solutions that connect and elevate communities.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
19	Dewberry	Exact match	Fairfax, VA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,795 contacts →
	Exact match “Dewberry is a leading, market-facing firm with a proven history of providing professional services to a wide variety of public- and private-sector clients.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
20	APTIM	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,639 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
21	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,473 contacts →
	Exact match “Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
22	Geosyntec Consultants	Exact match	Boca Raton, FL, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,393 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
23	Kleinfelder	Exact match	San Diego, CA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,344 contacts →
	Exact match “At Kleinfelder, we have been connecting great people to the best work since 1961.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
24	VHB	Exact match	Watertown, MA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,277 contacts →
	Exact match “We are VHB.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
25	Providence	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 24, 2026	n/a	2,232 contacts →
	Exact match “Providence is an employee-owned engineering and environmental consulting firm.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “engineering consultancy companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 13,069 engineering consultancy companies based in the United States

See the full list, filter by size, metro and specialty, and access 304,692 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Engineering consultancy companies based in the United States at a glance

As of Sep 24, 2026

43.9%Verified-email coverage

38.3%Mobile-number coverage

53.1Average contacts per company

11-50Median size (employees)

3.7%Largest-city concentration · Houston

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

7,006

11-50

5,466

51-200

1,977

201-500

466

501-1,000

168

1,001-5,000

176

5,001-10,000

10001+

Freshness & accuracy

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

Email last verified

Median 26.0d

229,5410–30

67,31931–60

4,81061–90

17990–180

2,843180+

Company record updated

Median 87.0d

00–30

163,47331–60

345,11861–90

147,19890–180

37,876180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “engineering consultancy companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 304,692 professional contacts with verified work emails across the full matched dataset. 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 24, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Engineering consultancy companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “engineering consultancy companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many engineering consultancy companies are there based in the United States?

RevenueBase identified 13,069 company matches for engineering consultancy companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

AECOM tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most engineering consultancy companies?

Houston leads with 484 company records, followed by New York (373) and Chicago (168).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 304,692 professional contacts with verified work emails tracked across these 13,069 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 24, 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.