Who Are the U.S. Presidents?
From George Washington to the present — the leaders who shaped America across nearly 250 years.
The Highest Office in the Land
The President of the United States is the head of the executive branch of government, the commander-in-chief of the military, and the nation's chief diplomat. The Constitution established this role in 1789, and since then, the presidency has been held by leaders who faced vastly different challenges — from founding a new nation to fighting civil wars to navigating global pandemics. Each president left a unique mark on American history.
The Early Presidents
George Washington (1st, 1789–1797) set the standard for every president who followed. He voluntarily stepped down after two terms, establishing a tradition of peaceful power transfer that became one of America's most important democratic norms. Thomas Jefferson (3rd) doubled the country's size with the Louisiana Purchase. Abraham Lincoln (16th) held the nation together through the Civil War and ended slavery with the Emancipation Proclamation and the 13th Amendment — many historians consider him the greatest president.
The Modern Presidency
Franklin D. Roosevelt (32nd) led the country through the Great Depression and most of World War II, serving an unprecedented four terms. After his presidency, the 22nd Amendment limited all future presidents to two terms. John F. Kennedy (35th) inspired a generation and navigated the Cuban Missile Crisis. Barack Obama (44th) became the first African American president in 2009, a milestone that reflected the nation's evolving understanding of equality.
How Presidents Are Elected
Presidents are elected every four years through a system called the Electoral College. Citizens vote in their state, and each state gets a number of electoral votes based on its population. A candidate needs at least 270 of the 538 total electoral votes to win. To be eligible, a person must be at least 35 years old, a natural-born U.S. citizen, and have lived in the country for at least 14 years.
The Power and Limits of the Presidency
The president can sign or veto laws, issue executive orders, negotiate treaties, appoint Supreme Court justices, and command the military. But the Constitution deliberately limits presidential power through checks and balances — Congress must approve budgets and confirm appointments, and the Supreme Court can strike down executive actions that violate the Constitution. This system ensures that no single person, no matter how powerful, can act without accountability.
Eight U.S. presidents died while in office — four from natural causes and four from assassination. William Henry Harrison holds the record for the shortest presidency: just 31 days. He gave his inauguration speech in the cold rain without a coat, developed pneumonia, and died a month later. On the other end, Franklin D. Roosevelt served the longest — over 12 years across four terms, from 1933 until his death in 1945.
Last reviewed: April 2026