Company lists · Data refreshed September 2026

Top 14 Government consulting organizations based in Irvine, United States

RevenueBase identified 32 government consulting organizations headquartered in Irvine, United States as of September 2026 and tracks 535 professional contacts across them, including 302 with verified work emails. Washington is the largest hub.

This list covers government consulting organizations headquartered in Irvine, 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 19, 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 19, 2026 86% judged on-target in blind review
32Companies
535Contacts tracked
302Verified emails
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The 14 largest government consulting organizations based in Irvine, United States

Ranked by team size
Top 14 of 32 government consulting organizations based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to government consulting organizations: 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 evidenceIrvine, CA, United StatesHQ checked Sep 19, 2026201-500221 contacts →

Partial evidence

“Interwest specializes in providing professional and consulting services to public agencies across California, Nevada, Colorado, and beyond.”

Source: RevenueBase Database · checked Sep 19, 2026
2Partial evidenceIrvine, CA, United StatesHQ checked Sep 19, 202651-200183 contacts →

Partial evidence

“Our team produces independent research and custom consulting advice to help executives make the most informed decisions possible.”

Source: RevenueBase Database · checked Sep 19, 2026
3Partial evidenceIrvine, CA, United StatesHQ checked Sep 19, 202611-5024 contacts →

Partial evidence

“EVALCORP partners with government agencies and community-based nonprofits to prevent and resolve complex social issues through: inclusive and diverse perspectives, innovative…”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceIrvine, CA, United StatesHQ checked Sep 19, 202611-5016 contacts →

Partial evidence

“MENTOR is a management consulting firm that helps organizations to improve performance and reach their full potential, by offering a unique combination of business solutions.”

Source: RevenueBase Database · checked Sep 19, 2026
5Partial evidenceIrvine, CA, United StatesHQ checked Sep 19, 202611-509 contacts →

Partial evidence

“MatrixPoint Consulting helps brand executives in QSR, CPG, and retail grow through marketing they can measure.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceIrvine, CA, United StatesHQ checked Sep 19, 202611-508 contacts →

Indirect evidence

“Transparency & Customer Needs Satisfaction are the two principles that make up ATTAC.”

Source: RevenueBase Database · checked Sep 19, 2026
7Partial evidenceIrvine, CA, United StatesHQ checked Sep 19, 20261-107 contacts →

Partial evidence

“Sarakki Associates Inc.(SAI) is a leading consulting firm specializing in management consulting, program/project management, and systems-software engineering (requirements…”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceIrvine, CA, United StatesHQ checked Sep 19, 202611-505 contacts →

Indirect evidence

“Copperpillar excels in the telecommunications industry with core services that enable our clients to meet fast paced demands and deadlines.”

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceIrvine, CA, United StatesHQ checked Sep 19, 2026201-5004 contacts →

Partial evidence

“Professional Corporate Consultants is a full-service project consulting firm with a reputation for delivering customized solutions to meet the diverse needs of public and private…”

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceIrvine, CA, United StatesHQ checked Sep 19, 20261-103 contacts →

Partial evidence

“Who we are The Transparity Group is a team of trusted partners providing consulting services to individuals and small business in the areas of Career/Executive Coaching…”

Source: RevenueBase Database · checked Sep 19, 2026
11Partial evidenceIrvine, United StatesHQ checked Sep 19, 202611-503 contacts →

Partial evidence

“VelocityOne Group is a global business consulting firm with offices in all major cities.”

Source: RevenueBase Database · checked Sep 19, 2026
12Partial evidenceIrvine, CA, United StatesHQ checked Sep 19, 202611-503 contacts →

Partial evidence

“Agnitios is a management and technology consulting firm that works with clients to deliver results that endure.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceIrvine, CA, United StatesHQ checked Sep 19, 202611-502 contacts →

Indirect evidence

“How We Help Nonprofits Your organization is dedicated to making a difference, and your time should be spent furthering your mission-not sorting through technology options.”

Source: RevenueBase Database · checked Sep 19, 2026
14Partial evidenceIrvine, CA, United StatesHQ checked Sep 19, 202651-2001 contacts →

Partial evidence

“SCMSP is a leading Certified SBA 8(a) and Minority Owned Business (DBE, SBE, and CPUC Certified), Management Consulting firm that offers business and technology solutions to…”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 14 of 32 government consulting organizations based in Irvine, United States

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Government consulting organizations based in Irvine, United States at a glance

As of Sep 19, 2026
56.4%Verified-email coverage
16.7Average contacts per company
1-10Median size (employees)
1828.1%Largest-city concentration · Washington
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
11
51-200
2
201-500
2

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 32 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 government consulting organizations, 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 Irvine, United States whose own description of what they do matches “government consulting organizations”. 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 government consulting organizations), 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 government consulting organizations, and records with no verified work email. Companies headquartered outside Irvine 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, 302 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 19, 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.

Government consulting organizations by metro in the United States

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 government consulting organizations, 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 government consulting organizations are there based in Irvine, United States?

RevenueBase identified 32 government consulting organizations headquartered in Irvine, 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?

Interwest Consulting Group, headquartered in Irvine, tops this list with the largest team on record.

Which city has the most government consulting organizations?

Washington leads with 585 headquartered companies, followed by New York (270) and Atlanta (192).

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 302 verified decision-maker contacts tracked across these 32 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 19, 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.