What Percentage of Americans Died in the US Civil War?

About 620,000 Americans, or 2% of the population, died in the American Civil War. That's proportionally equivalent to 6 million people today.

The US Civil War took place between the Northern states (Union) and the Southern states (Confederacy) between 1861 and 1865. The victory of the North ended slavery and formed the American states into a unified nation. The price however, was the lives of 620,000 people. This was 2% of the American population. as there were a little over 31 million US residents at the time.

The American Civil War was the conflict with the highest death toll in the world after the 1815 Napoleonic Wars and until World War I in 1914. It is also the American war with the highest number of military deaths, followed by 405,399 deaths in World War II.

More about the US Civil War:

  • The Confederate army attacked Fort Sumter in Charleston Bay, South Carolina on April 12, 1861, triggering the start of the American Civil War.
  • The highest death toll during the American Civil War belongs to the Battle of Gettysburg in which 51,000 people died.
  • Aside from the 620,000 people killed, 476,000 were wounded and another 400,000 people were captured or went missing during the US Civil War.

Frequently Asked Questions

What percentage of Americans died in the US Civil War?

According to historical data, approximately 2.5% of the American population at the time died in the Civil War. This percentage translates to roughly 620,000 soldiers who lost their lives due to combat, disease, and other causes during the conflict, out of an estimated population of 31 million people in the United States in the 1860s.

How did the death toll of the Civil War compare to other American wars?

The US Civil War remains the deadliest conflict in American history. The death toll was higher than the combined American fatalities of World War I, World War II, the Korean War, and the Vietnam War. The Civil War's casualties represented a significant portion of the male population of fighting age at that time.

What were the leading causes of death during the Civil War?

Disease was the leading cause of death during the Civil War, accounting for approximately two-thirds of the total fatalities. Poor sanitation, inadequate medical knowledge, and the spread of infectious diseases in camps and prisons contributed to the high mortality rate from illnesses such as dysentery, typhoid, and pneumonia.

Did the Civil War death toll affect the overall population growth of the United States?

Yes, the Civil War had a significant impact on the population growth of the United States. The loss of 620,000 lives, most of whom were young men of reproductive age, directly affected the birth rate and population expansion during and immediately after the war. However, the population did continue to grow due to immigration and other factors.

How has the Civil War death toll been revised over time?

Historical estimates of the Civil War death toll have been revised over time as new research and methodologies have emerged. Early estimates were around 618,000, but recent scholarship using demographic methods and statistical analysis suggests that the number could be as high as 750,000, indicating the war's even greater impact on American society.

Discussion Comments


It will be the downfall of our nation.


The civil war and all wars were tragic so I would like to bring your attention to another war in the United States in which our military, our citizens and our children are being betrayed. The war is on the American people by the illegal alien invasion sanction by your government and others.

About 116,353 Americans have been killed by illegal aliens since 9/11 according to figures by Rep Steve King of Iowa who says 25 Americans are killed daily by illegal invaders. About 12 Americans a day are killed by drunk illegal alien drivers who think it's "macho" to drive drunk.

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