Average IQ of US Presidents

US presidents are among the most studied individuals in history. While no president has taken a standardized IQ test, researchers have estimated their intelligence based on academic records, writings, speeches, and documented achievements. The average estimated presidential IQ is ~130 — top 2% of the population.

⚠️ Important Disclaimer

All presidential IQ scores are estimates — no president has taken a standardized IQ test. Historical estimates are based on academic records, writings, and achievements. Modern estimates use SAT/LSAT correlations where available. Treat all figures as rough approximations with significant uncertainty.

Estimated IQ Scores by President

President	Years	Est. IQ	Basis
John Quincy Adams	1825–1829	~175	Spoke 7 languages, Harvard graduate, diplomat
Thomas Jefferson	1801–1809	~160	Polymath, architect, inventor, writer
John F. Kennedy	1961–1963	~158	Harvard graduate, Pulitzer Prize winner
Bill Clinton	1993–2001	~137	Rhodes Scholar, Yale Law School
Jimmy Carter	1977–1981	~156	Nuclear engineer, Naval Academy graduate
Barack Obama	2009–2017	~130–145	Harvard Law Review president, constitutional law professor
Abraham Lincoln	1861–1865	~128–140	Self-taught lawyer, exceptional writer and orator
Woodrow Wilson	1913–1921	~145	PhD in political science, Princeton president
Theodore Roosevelt	1901–1909	~149	Harvard graduate, prolific author, naturalist
Franklin D. Roosevelt	1933–1945	~147	Harvard graduate, Columbia Law School
George Washington	1789–1797	~132	Self-educated, exceptional strategic thinker
Dwight D. Eisenhower	1953–1961	~122	West Point graduate, Supreme Allied Commander
Ronald Reagan	1981–1989	~105	Eureka College graduate, actor turned politician
George W. Bush	2001–2009	~125	Yale and Harvard Business School graduate
Donald Trump	2017–2021, 2025–	~156 (self-claimed)	Wharton School graduate; self-reported, unverified
Joe Biden	2021–2025	~120	Syracuse Law School, long Senate career

Does Presidential IQ Predict Success?

Interestingly, estimated IQ doesn't strongly predict presidential greatness:

High IQ + Great President

• Abraham Lincoln (~130-140) — consistently #1 ranked
• Franklin D. Roosevelt (~147) — top 5 ranked
• Theodore Roosevelt (~149) — top 5 ranked
• Thomas Jefferson (~160) — top 5 ranked

High IQ ≠ Great President

• John Quincy Adams (~175) — one-term, ineffective
• Woodrow Wilson (~145) — mixed legacy
• Jimmy Carter (~156) — low approval ratings
• Herbert Hoover (~141) — Great Depression

What Actually Predicts Presidential Success

Emotional intelligence: Ability to inspire, empathize, and manage relationships — Lincoln and FDR excelled here

Communication skills: Ability to articulate vision and persuade — Reagan and Obama were exceptional communicators

Crisis management: Decision-making under extreme pressure — FDR, Lincoln, and Eisenhower excelled

Political acumen: Understanding of power, coalition-building, and legislative strategy

Historical timing: Being president during a crisis (war, depression) creates opportunities for greatness

Modern Presidents: Academic Records

President	Education	Academic Achievement
Barack Obama	Columbia BA, Harvard Law JD	Harvard Law Review president (top of class)
George W. Bush	Yale BA, Harvard MBA	Average student; legacy admission
Bill Clinton	Georgetown BA, Oxford (Rhodes Scholar), Yale Law JD	Rhodes Scholar; exceptional academic record
George H.W. Bush	Yale BA (economics)	Phi Beta Kappa; strong academic record
Ronald Reagan	Eureka College BA (economics/sociology)	Average student; C student by some accounts
Jimmy Carter	US Naval Academy BS	Top of class; nuclear engineering program
Donald Trump	Fordham (2 years), Wharton BS (economics)	Average student; no published academic records
Joe Biden	University of Delaware BA, Syracuse Law JD	Near bottom of law school class (76th of 85)

Frequently Asked Questions

What is the average IQ of US presidents?

The estimated average IQ of US presidents is approximately 130, placing them in the top 2% of the population. However, these are retrospective estimates with significant uncertainty — no president has taken a standardized IQ test. Estimates are based on academic records, writings, speeches, and documented achievements.

Who was the smartest US president?

John Quincy Adams is often estimated as the highest-IQ president (~175), followed by Thomas Jefferson (~160) and John F. Kennedy (~158). However, these estimates are highly uncertain. Modern presidents with documented high academic achievement include Barack Obama (Harvard Law Review president) and Bill Clinton (Rhodes Scholar).

What was Obama's IQ?

Barack Obama's IQ has never been officially published. Estimates based on his academic performance (Harvard Law Review president, constitutional law professor) typically range from 130-145. He scored in the 98th-99th percentile on the LSAT, suggesting IQ 130-140.

What was Abraham Lincoln's IQ?

Abraham Lincoln's IQ is estimated at approximately 128-140. Despite having minimal formal education (less than a year total), Lincoln taught himself law, became a successful attorney, and demonstrated exceptional reasoning and rhetorical ability. His writings show sophisticated analytical thinking.

Do you need high IQ to be president?

Not necessarily. Presidential success correlates more with emotional intelligence, communication skills, political acumen, and leadership ability than with raw IQ. Some highly effective presidents had modest estimated IQs, while some high-IQ presidents were less successful. The presidency requires a unique combination of cognitive and interpersonal skills.

Conclusion

The average estimated IQ of US presidents is approximately 130 — top 2% of the population. However, IQ doesn't strongly predict presidential greatness. Some of the highest-IQ presidents (John Quincy Adams, Jimmy Carter) had mixed legacies, while some of the most effective presidents (Lincoln, Washington) had more modest estimated IQs.

Presidential success depends on emotional intelligence, communication skills, crisis management, and historical timing as much as raw cognitive ability. The presidency requires a unique combination of intelligence and interpersonal skills that no single IQ score can capture.

Average IQ of US Presidents: Complete Rankings & Analysis

How Does Your IQ Compare to Presidents?