There is no defensible single answer without defining “corrupt” and choosing a measure. Historical federal conviction totals, a state’s safeguards against corruption, and broader political influence describe different things—not a current, interchangeable ranking of the states.
Why there is no clear winner
A state can have many recorded corruption convictions because more cases were detected and prosecuted; that total alone does not establish that corruption is more common there. A state can also have stronger or weaker rules for transparency and accountability, which is a different question from how many people were convicted.
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“Corruption” itself can mean illegal exchanges for private gain, such as cash or gifts, or legal exchanges that may advance political interests, such as campaign contributions or endorsements. The Edmond & Lily Safra Center for Ethics distinguishes these forms in its work on measuring illegal and legal corruption in American states.
What historical conviction totals show
The Center for Public Integrity reported these raw totals of federal public-corruption convictions by state for 1976–2010:
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| State | Federal convictions, 1976–2010 |
|---|---|
| New York | 2,522 |
| California | 2,345 |
| Illinois | 1,828 |
These are historical counts, not current figures or population-adjusted rates. They count convictions recorded over a defined period; they do not measure every corrupt act, including conduct never detected or prosecuted. The Center cautioned against treating conviction totals as an answer to which state is “most corrupt.” See its 2012 comparison.
What the state safeguards study measured
The Center for Public Integrity’s 2012 State Integrity Investigation assessed laws and practices intended to promote openness and deter corruption, rather than simply tallying scandals. It reviewed 330 indicators across 14 categories of state government. The project reported that no state earned an A, five earned a B, and eight failed. Its project description explains that the investigation measured “the strength of laws and practices that encourage openness and deter corruption.”
Rank #2
The first round was conducted in 2011 and published in 2012. The methodology involved on-the-ground reporting and original data collection, including review of laws and procedures, expert interviews, legal and scholarly review, and media review to document and cross-check indicator scores. The Center describes that process in How we investigated State Integrity. This is a historical assessment, not a current ranking.
How to read a corruption ranking
Before comparing states, check what the ranking actually counts. These distinctions change what its results can support:
Rank #3
- Definition: Does it count federal convictions, assess institutional safeguards, or include legal forms of political influence?
- Unit: Is the result a raw total, a population-adjusted rate, or a score or grade? The figures above are raw totals; they should not be presented as per-capita rates.
- Period: The conviction figures cover 1976–2010, while the State Integrity Investigation was published in 2012. Neither establishes a present-day winner.
- What is observed: Convictions reflect cases detected and prosecuted. A safeguards assessment evaluates rules and practices. Neither captures every dimension of corruption.
- What is missing: No single measure here captures all unreported conduct, legal influence, or differences in enforcement.
A high conviction count therefore does not prove that a state has weaker safeguards or a higher underlying rate of corruption. The measures answer different questions and should not be blended into one league table.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Where to look for newer federal enforcement data
The U.S. Department of Justice Public Integrity Section publishes annual reports to Congress about the federal effort to combat public corruption. Its annual reports page, updated January 15, 2025, lists reports through 2023 and describes nationwide federal enforcement reporting. A newer report may illuminate federal enforcement, but its year and definitions need to be checked before comparing it with historical state totals; federal prosecution data alone would still not establish a state’s overall corruption rate.
Rank #4
The National Institute of Justice summarizes federal public-corruption convictions since the mid-1980s as largely involving fraud, bribery, extortion, and conspiracy. That describes the offenses represented in federal prosecutions, not every possible form of corruption. See its summary of the unlawful behaviors behind federal convictions.
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