Company lists · Data refreshed September 2026

Top 25 Civil engineering consultancy firms based in the United States

Name: Civil engineering consultancy firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 13,896 companies tracked

RevenueBase identified 13,896 company matches for civil engineering consultancy firms associated with the United States as of September 2026 and tracks 536,697 professional contacts across them, including 250,706 with verified work emails and 214,268 with mobile numbers. New York is the largest hub.

This list covers company matches for civil engineering consultancy firms 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 23, 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 23, 2026 How this list was built

13,896Companies

536,697Contacts tracked

250,706Verified emails

214,268Mobile numbers

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

The 25 largest civil engineering consultancy firms based in the United States

Ranked by team size

Top 25 of 13,896 company matches for civil engineering consultancy firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 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 23, 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 23, 2026 · View company records in RevenueBase
2	Kimley-Horn	Exact match	Raleigh, NC, United StatesHQ recorded Sep 23, 2026	5,001-10,000	10,117 contacts →
	Exact match “Kimley-Horn is one of the nation’s premier planning and design consulting firms.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	WSP In The U.S	Exact match	New York, NY, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
4	CDM Smith	Exact match	Boston, MA, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
5	HNTB	Exact match	Kansas City, MO, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
6	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
7	Michael Baker International	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
8	Balfour Beatty US	Exact match	Dallas, TX, United StatesHQ recorded Sep 23, 2026	1,001-5,000	3,578 contacts →
	Exact match “Balfour Beatty US is an industry-leading provider of general contracting, at-risk construction management and design-build services for public and private sector clients across…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	STV	Exact match	New York, NY, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
10	Dewberry	Exact match	Fairfax, VA, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
11	Brown And Caldwell	Exact match	Walnut Creek, CA, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
12	Geosyntec Consultants	Exact match	Boca Raton, FL, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
13	Providence	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
14	The Haskell Company	Exact match	Jacksonville, FL, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,213 contacts →
	Exact match “Haskell delivers over $3 billion annually in Architecture, Engineering, Construction (AEC) and Consulting solutions to assure certainty of outcome for complex capital projects…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,210 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	KCI	Exact match	Sparks, NC, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,207 contacts →
	Exact match “KCI is a 100-percent employee-owned engineering, consulting and construction firm serving clients throughout the United States and beyond.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,177 contacts →
	Exact match “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	Olsson	Exact match	Lincoln, NE, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,108 contacts →
	Exact match “Olsson is an engineering firm made up of people who craft expert solutions and designs that improve communities.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Colliers Engineering & Design	Exact match	Holmdel, NJ, United StatesHQ recorded Sep 23, 2026	1,001-5,000	2,049 contacts →
	Exact match “Colliers Engineering & Design, an affiliate of Colliers, is a trusted provider of multi-discipline engineering and architecture, design and consulting services to public and…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,985 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	LJA	Exact match	Houston, TX, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,932 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	Clayco	Exact match	Chicago, IL, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,720 contacts →
	Exact match “Clayco is a full-service, turnkey real estate development, master planning, architecture, engineering, and construction firm that safely delivers clients across North America the…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	Yates Construction	Exact match	Philadelphia, MS, United StatesHQ recorded Sep 23, 2026	5,001-10,000	1,713 contacts →
	Exact match “Yates Construction is part of The Yates Companies, Inc.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	JMT	Exact match	Serving Clients Across The Us, MD, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,688 contacts →
	Exact match “Johnson, Mirmiran & Thompson is an employee owned, multi-disciplined firm offering a full array of planning, design, and construction phase consulting services for infrastructure…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,666 contacts →
	Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Sep 23, 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 “civil engineering consultancy firms”. 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 13,896 civil engineering consultancy firms based in the United States

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Civil engineering consultancy firms based in the United States at a glance

As of Sep 23, 2026

46.7%Verified-email coverage

39.9%Mobile-number coverage

38.6Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · New York

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

6,195

11-50

5,153

51-200

1,856

201-500

395

501-1,000

143

1,001-5,000

107

5,001-10,000

10001+

Freshness & accuracy

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

Email last verified

Median 25.0d

189,2520–30

56,02931–60

3,71761–90

11690–180

1,592180+

Company record updated

Median 86.0d

00–30

158,50731–60

246,82861–90

100,29890–180

31,064180+

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 “civil engineering consultancy firms” 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 250,706 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 23, 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.

Civil engineering consultancy firms 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 “civil engineering consultancy firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 13,896 company matches for civil engineering consultancy firms 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 civil engineering consultancy firms?

New York leads with 320 company records, followed by Houston (292) and Austin (151).

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 250,706 professional contacts with verified work emails tracked across these 13,896 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 23, 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.