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Company lists · Data verified August 2026

Top 25 Civil engineering consultancies based in the United States

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 14,363 companies tracked

There are 14,363 civil engineering consultancies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 559,980 professional contacts across them, including 259,281 with verified work emails and 239,220 with mobile numbers. Houston is the largest hub.

This list covers civil engineering consultancies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

14,363Companies
559,980Contacts tracked
259,281Verified emails
239,220Mobile numbers
Unlock all 14,363 companies Free account · no credit card · 2 minutes

The 25 largest civil engineering consultancies based in the United States

Ranked by team size
Top 25 of 14,363 civil engineering consultancies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#CompanyHQEmployeesContactsVerified emails
1Tetra TechPasadena, CA10001+13,0665,477
2Black & VeatchOverland Park, KS10001+10,8073,859
3WSP In The U.SNew York, NY10001+9,3185,535
4URS Corporation, An Aecom CompanySan Francisco, CA10001+7,722645
5Clark Construction Groupn/a1,001-5,0004,2221,660
6STVMorrisville, NC1,001-5,0003,5642,109
7Balfour Beatty USSeattle, WA1,001-5,0003,5591,924
8KleinfelderSan Diego, CA1,001-5,0002,3651,411
9VHBNew York, NY1,001-5,0002,2891,345
10KCINorth Charleston, SC1,001-5,0002,2281,110
11ECS Group Of CompaniesFredericksburg, VA1,001-5,0002,2011,061
12Langan Engineering & Environmental ServicesEl Segundo, CA1,001-5,0002,1361,662
13OlssonPhoenix, AZ1,001-5,0002,1301,321
14LJASarasota, FL1,001-5,0002,0731,578
15Johnson, Mirmiran & ThompsonDover, DE1,001-5,0001,6771,023
16Rk&kDover, DE1,001-5,0001,6391,038
17Ssoe GroupMidland, MI1,001-5,0001,627783
18UESHouston, TX1,001-5,0001,571879
19Kpff Consulting EngineersLos Angeles, CA1,001-5,0001,493997
20Labella AssociatesNew York1,001-5,0001,4651,009
21WoolpertDayton, OH1,001-5,0001,411884
22Davey Resource Group, INCKent, OH1,001-5,0001,407681
23Mead & HuntFenton, MO1,001-5,0001,362919
24UlteigGreenwood Village, CO1,001-5,0001,360915
25Walter P MooreEl Paso, TX1,001-5,0001,293925

Showing 25 of 14,363 civil engineering consultancies based in the United States

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Civil engineering consultancies based in the United States at a glance

As of Aug 28, 2026
11-50Median size (employees)
HoustonLargest hub · 328 HQs
239,220Contacts with mobile numbers
1272Emails re-verified in last 30 days

Companies by employee count

1-10
6,304
11-50
5,279
51-200
1,961
201-500
448
501-1,000
160
1,001-5,000
129
10001+
18

Civil engineering consultancies by metro

MetroCompanies
Civil engineering consultancies in Houston328
Civil engineering consultancies in New York299
Civil engineering consultancies in Austin159
Civil engineering consultancies in Miami141
Civil engineering consultancies in Dallas134
Civil engineering consultancies in Chicago134
Civil engineering consultancies in Los Angeles130
Civil engineering consultancies in San Diego130

How this list was built

Source
The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion
Companies whose own business descriptions match “civil engineering consultancies”, with match quality audited by blind human judging, and headquartered in the United States.
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
Contact records re-verify on a rolling cadence; 1272 contacts on this list were re-verified in the last 30 days.
Refresh
Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 14,363 civil engineering consultancies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Tetra Tech, headquartered in Pasadena, tops this list with the largest team on record.

Which city has the most civil engineering consultancies?

Houston leads with 328 headquartered companies, followed by New York (299) and Austin (159).

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 259,281 verified decision-maker contacts tracked across these 14,363 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Related lists

Browse: Companies home · All United States lists · All Civil engineering consultancies lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.

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