How Many People Died in the Black Death?
The best modern estimates for history's deadliest recorded pandemic, and why the numbers are a range
The Black Death — the plague pandemic that swept Europe between 1347 and 1351 — is estimated to have killed roughly 25 to 50 million people in Europe alone, which was about 30% to 60% of the European population at the time. Across the whole affected region of Europe, the Middle East, and North Africa, estimates of the total death toll range from about 75 million to 200 million people. It is the deadliest pandemic in recorded human history by proportion of population killed.
These are estimates, not census figures. No reliable population counts exist for the 14th century, so historians work backward from tax records, manorial rolls, church records, and burial evidence, which is why the numbers are given as ranges rather than exact totals. What is not in doubt is the scale: some regions lost more than half their people within a few years, and Europe's population did not recover to its pre-plague level for roughly 150–200 years.
The numbers in context
Europe's pre-plague population is usually estimated at around 75–80 million; the most common scholarly summary is that 30–60% died, giving the 25–50 million European figure. Mortality varied enormously by place: some towns and monasteries recorded losses above 60–70%, while a few isolated areas were spared almost entirely.
The disease is now generally identified as Yersinia pestis, confirmed by DNA recovered from plague-era graves. It spread in bubonic, pneumonic, and septicemic forms. The traditional 'rat-and-flea' transmission model has been challenged by research suggesting human ectoparasites (human fleas and body lice) may explain how fast the plague spread person-to-person during this outbreak — an active area of debate.
The Black Death was one wave of a longer pandemic (the Second Plague Pandemic) that recurred for centuries, including the Great Plague of London in 1665–66. Its social effects were vast: acute labor shortages raised wages for survivors, weakened serfdom in Western Europe, and reshaped economy, religion, and art.
Frequently asked questions
How many people died in the Black Death?
An estimated 25 to 50 million people died in Europe between 1347 and 1351 — roughly 30% to 60% of the European population. Across Europe, the Middle East, and North Africa, total estimates range from about 75 million to 200 million.
What percentage of Europe died in the Black Death?
The most widely cited range is 30% to 60% of Europe's population, with many historians centering on roughly one-third to one-half. Mortality varied sharply by region, from under 20% in some areas to over 60–70% in the worst-hit towns.
Why are the death-toll numbers only estimates?
There were no reliable population censuses in the 14th century. Historians reconstruct the toll from tax rolls, manorial and church records, wills, and burial evidence, which yields ranges rather than exact figures.
What caused the Black Death?
The bacterium Yersinia pestis, confirmed by DNA from plague-era graves. It caused bubonic, pneumonic, and septicemic plague. How it spread so quickly is debated — the classic rat-flea model has been challenged by studies favoring human fleas and lice for this particular outbreak.
How long did it take Europe to recover?
Europe's population did not return to its pre-1347 level for roughly 150 to 200 years. The labor shortage raised wages, helped erode serfdom in Western Europe, and drove major social and economic change.
Explore related events on the timeline
- The Black Death on the interactive timeline
- The medieval world before the plague
- The Mongol Empire, along whose routes plague traveled
Related guides
Sources consulted
- Encyclopaedia Britannica, 'Black Death'
- Ole J. Benedictow, The Black Death 1346–1353: The Complete History (Boydell & Brewer)
Researched with AI and verified against mainstream scholarship and the cited sources on this page. See our methodology and corrections policy.