Company lists · Data refreshed September 2026

Top 24 Geoscience consulting firms based in Chicago, United States

RevenueBase identified 40 geoscience consulting firms headquartered in Chicago, United States as of September 2026 and tracks 1,509 professional contacts across them, including 848 with verified work emails. Across the United States, Houston is the largest hub for this category (371 companies); Chicago has 40.

This list covers geoscience consulting firms headquartered in Chicago, 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
40Companies
1,509Contacts tracked
848Verified emails
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The 24 largest geoscience consulting firms based in Chicago, United States

Ranked by team size
Top 24 of 40 geoscience consulting firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to geoscience 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 evidenceChicago, IL, United StatesHQ checked Sep 28, 2026201-500376 contacts →

Partial evidence

“Envista Forensics is the global leader in providing comprehensive forensic consulting and engineering services.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 2026201-500362 contacts →

Partial evidence

“Primera Engineers is a mid-size, full-service, woman-owned (WBE) engineering design and consulting firm specializing in four areas of expertise: buildings, transportation…”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 202651-200114 contacts →

Partial evidence

“Founded upon a vision of challenging and changing the energy infrastructure to help light up the world, KDM specializes in engineering consulting and design, program and project…”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202651-20068 contacts →

Indirect evidence

“Clients can trust Environmental Design International inc.(EDI) to be responsive, demonstrate technical excellence, adhere to the demands of budgets and schedules, and offer…”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202651-20062 contacts →

Indirect evidence

“2IM Group is now part of MacKay, a multi-disciplinary engineering firm serving clients across the western and central United States.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202651-20060 contacts →

Indirect evidence

“Dynasty Group, Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-5052 contacts →

Indirect evidence

“Carnow, Conibear & Assoc, Ltd.(Carnow Conibear), a minority-owned, woman-owned and veteran-owned business, was established in 1975.”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-5043 contacts →

Partial evidence

“Aeterra is a full-service environmental and sustainability consulting firm that provides operating businesses and their owners with meaningful, practical, business-focused advice.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 202651-20037 contacts →

Partial evidence

“Specialty Consulting, Inc.(SPC) is a Hispanic–owned, infrastructure engineering and scientific consulting firm based in Chicago.”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-5028 contacts →

Partial evidence

“Gabriel Environmental Services is a multi-disciplinary environmental consulting firm headquartered just northwest of downtown Chicago.”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 202651-20026 contacts →

Partial evidence

“Multi-disciplined consulting firm specializing in a wide range of professional services such as Transportation Engineering and Surveying, Storm Water Management, terrestrial LiDAR…”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-5026 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-5026 contacts →

Indirect evidence

“Urban GIS, Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
14Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-5023 contacts →

Partial evidence

“Orion Engineers, PLLC is a civil, structural & construction engineering consulting firm based in the Midwest delivering planning, design, and construction management services to…”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-5018 contacts →

Indirect evidence

“Founded in 1991, GTG Consultants, Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-5017 contacts →

Indirect evidence

“Carlson Environmental, a Nova Group, GBC Company, was originally founded in 1988 by Dr.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 20261-1013 contacts →

Partial evidence

“Strategic Growth Consulting helps small to medium sized professional service companies identify, plan and execute growth strategies bringing over 30 years of experience in the…”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-5010 contacts →

Indirect evidence

“Since its incorporation in 1992, EPS Environmental has provided a broad range of environmental services, including thousands of property assessments, several thousand Phase II…”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 20261-1010 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-507 contacts →

Indirect evidence

“Princeton Technical Services Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
21Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 20261-106 contacts →

Partial evidence

“A consulting civil engineering firm headquartered in Chicago, Illinois.”

Source: RevenueBase Database · checked Sep 28, 2026
22Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 202611-504 contacts →

Partial evidence

“Environmental Group Services, Ltd.(EGSL) is a full service environmental engineering, training and consulting company located in Chicago, Illinois.”

Source: RevenueBase Database · checked Sep 28, 2026
23Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“Environmental Engineering and Consulting Services”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“We are a small, nimble consulting firm specializing in geospatial analytics, research, data visualization, and full stack application development for public, nonprofit, and…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 24 of 40 geoscience consulting firms based in Chicago, United States

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Geoscience consulting firms based in Chicago, United States at a glance

As of Sep 28, 2026
56.2%Verified-email coverage
37.7Average contacts per company
11-50Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
16
51-200
9
201-500
2

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 40 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 geoscience 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 Chicago, United States whose own description of what they do matches “geoscience 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 geoscience 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 geoscience consulting firms, and records with no verified work email. Companies headquartered outside Chicago 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, 848 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 geoscience 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 geoscience consulting firms are there based in Chicago, United States?

RevenueBase identified 40 geoscience consulting firms headquartered in Chicago, 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?

Envista Forensics, headquartered in Chicago, tops this list with the largest team on record.

Which city in the United States has the most geoscience consulting firms?

Houston leads the United States with 371 headquartered companies, followed by Denver (109) and Austin (78). Chicago has 40.

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 848 verified decision-maker contacts tracked across these 40 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.