Company lists · Data refreshed September 2026
Top 25 Government accountability organizations based in the United States
RevenueBase identified 116 government accountability organizations headquartered in the United States as of September 2026 and tracks 33,111 professional contacts across them, including 2,948 with verified work emails. Washington is the largest hub.
This list covers government accountability organizations headquartered in the 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 20, 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.
The 25 largest government accountability organizations based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 73 contacts → | ||||
Strong evidence “Judicial Watch, Inc, a conservative, non-partisan educational foundation, promotes transparency, accountability and integrity in government, politics and the law.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 64 contacts → | ||||
Partial evidence “Founded in 1981, the Project On Government Oversight (POGO) is an independent nonprofit that investigates and exposes corruption and other misconduct in order to achieve a more…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 53 contacts → | ||||
Strong evidence “The Office of the State Auditor serves the public by ensuring accountability and transparency in local government with independent and unbiased oversight.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 38 contacts → | ||||
Indirect evidence “Allmond & Company, LLC, a small business, is a certified public accounting firm with a Federal accounting and auditing practice and an outstanding reputation for quality and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 37 contacts → | ||||
Strong evidence “American Oversight is a nonpartisan, nonprofit watchdog that advances truth, accountability, and democracy by enforcing the public’s right to government records.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 35 contacts → | ||||
Indirect evidence “At the Office of the Legislative Auditor (OLA), public policy researchers and auditors work to ensure and promote OLA's mission: to strengthen legislative oversight, improve…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 31 contacts → | ||||
Strong evidence “The BGA works for integrity, transparency, and accountability in government by exposing corruption and inefficiency; identifying and advocating effective public policy; and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 23 contacts → | ||||
Indirect evidence “McBride, Lock & Associates, LLC was formed in 1980.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 16 contacts → | ||||
Indirect evidence “The mission of the Office of the Inspector General is to ensure integrity in the operations of the Chicago Public Schools by conducting meaningful, accurate and thorough…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 16 contacts → | ||||
Partial evidence “The nonprofit and nonpartisan Association of Inspectors General (AIG) supports independent offices of inspector general in their fight to combat government waste, fraud and abuse.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 15 contacts → | ||||
Indirect evidence “Founded in 1995, TCS, a 501(c)(3) nonpartisan budget watchdog, serves as an independent voice for American taxpayers.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 15 contacts → | ||||
Indirect evidence “Our mission is to report “Every dime.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 14 contacts → | ||||
Partial evidence “Our purpose (why we exist) is to provide independent and objective insight, oversight, and foresight in promoting integrity, efficiency, and overall effectiveness in government.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 contacts → | ||||
Partial evidence “Citizens Against Government Waste (CAGW) is a private, non-partisan, nonprofit organization representing more than one million members and supporters nationwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 contacts → | ||||
Partial evidence “Citizens need accurate and complete financial information to be informed participants in the government's financial decisions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 contacts → | ||||
Indirect evidence “Common Cause Texas is proudly part of the national Common Cause grassroots network of more than 1 million powerful, fearless, ordinary Americans working together to build a more…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Indirect evidence “Welcome to the website of the Maryland Office of Legislative Audits.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Partial evidence “Our mission is to promote accountable and equitable county government.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Indirect evidence “Reform for Illinois, Formerly The Illinois Campaign for Political Reform, is a 501(c)3 non-partisan public interest group that conducts research and advocates reforms to promote…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “Denver Auditor Timothy M.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Strong evidence “Providing government the tools for transparency, accountability and participation since 1998.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Partial evidence “Integrity Florida is a nonpartisan, nonprofit research institute and government watchdog whose mission is to promote integrity in government and expose public corruption.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Strong evidence “We specialize in governmental and nonprofit audits, delivering the clarity, accountability, and confidence that mission‑driven organizations deserve.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Indirect evidence “El CIPP se fundó para ofrecer a los ciudadanos información y análisis que les permitan juzgar la eficacia de nuestros funcionarios electos y de las políticas públicas.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “A California nonprofit with a mission to investigate, expose, advocate and serve as a catalyst for reforming unaccountable government agencies” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: government accountability organizations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names government accountability organizations.
- Partial evidence
- Its own public description names part of government accountability organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name government accountability organizations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 116 government accountability organizations based in the United States
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Government accountability organizations based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 116 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 accountability 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 the United States whose own description of what they do matches “government accountability 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 accountability 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 accountability organizations, and records with no verified work email. Companies headquartered outside United States 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, 2,948 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 20, 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 accountability organizations by metro
- Government accountability organizations in Washington31
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 accountability 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 accountability organizations are there based in the United States?
RevenueBase identified 116 government accountability organizations headquartered in the 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?
Judicial Watch, headquartered in Washington, tops this list with the largest team on record.
Which city has the most government accountability organizations?
Washington leads with 31 headquartered companies, followed by Chicago (5) and Austin (4).
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 2,948 verified decision-maker contacts tracked across these 116 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 20, 2026.
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Government accountability organizations by geography
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.
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