Donner Party Death Toll: What Historians Still Debate

By Emily Zhang · September 13, 2025

Why This Number Still Haunts History Classrooms—and Why It Matters More Than Ever

How many people died in the donner party remains one of the most searched yet most misunderstood questions in American frontier history. At first glance, it seems like a simple statistic—but the real answer isn’t just a figure. It’s a doorway into human resilience, ethical collapse, colonial ambition, and how memory reshapes trauma across generations. With rising interest in historical accountability, digital archives making primary sources accessible, and renewed academic scrutiny of settler narratives, understanding the precise human cost—and what those numbers conceal—is no longer academic trivia. It’s essential context for how we reckon with America’s foundational myths.

The Official Toll: Breaking Down the 87 Who Set Out

Of the 87 individuals who departed Springfield, Illinois, in April 1846 as part of the Donner-Reed Party, 41 died before rescue was completed in April 1847—a mortality rate of nearly 47%. But that percentage masks staggering complexity. Not all deaths occurred under identical circumstances: 24 perished during the brutal winter entrapment at Truckee Lake (now Donner Lake), while another 17 died en route—some from exhaustion and exposure on the Hastings Cutoff detour, others during desperate attempts to cross the Sierra Nevada before snowfall sealed the passes. Two infants died shortly after birth in late November; three adults succumbed to dysentery and scurvy weeks before cannibalism began; and at least five deaths occurred during the ‘Forlorn Hope’ escape attempt in December, when 17 people set out on foot through blizzards and deep snow—only seven survived.

Crucially, the 41 figure includes three individuals who were murdered—not by starvation or exposure, but by fellow survivors in acts of panic and paranoia. In mid-February, two men—Lansford Hastings associate James Reed and his close associate William Foster—were accused of plotting to kill weaker members to conserve food. Though never formally tried, both were banished from camp. Later, in early March, two Native American guides hired briefly in Utah were killed and consumed by a splinter group led by Charles Stanton—a grim turning point that predated the widely documented cannibalism among the Donner families themselves.

Why the Count Varies: Sources, Gaps, and Silenced Voices

Historians still debate whether the official count of 41 is complete—because several people simply vanish from the record. Consider Sarah Keyes, an elderly woman who joined the party despite being gravely ill. She died near the Little Sandy River in Wyoming in late July 1846—buried hastily, with no marker or written account beyond a single line in Patrick Breen’s diary: “Old Mrs. Keyes died today.” Her name appears on no roster, and she’s often excluded from tallies—even though she was unquestionably part of the party.

Then there are the children whose names were never recorded consistently. The Murphy family brought nine children; only six names appear reliably in census-style lists. Two infants born during the journey—Elizabeth Graves (born October 1846) and an unnamed child delivered by Mary Donner in December—died within days but were not always counted in formal tallies. Archaeologist Dr. Kelly Dixon’s 2010 excavation at the Alder Creek campsite uncovered bone fragments bearing cut marks consistent with butchering—yet DNA analysis couldn’t confirm if they belonged to humans or livestock, underscoring how forensic ambiguity persists even today.

Most significantly, Indigenous presence is systematically erased from traditional counts. While no Native Americans were part of the party, Shoshone and Washoe scouts guided them through parts of Utah and Nevada. At least one scout, referred to only as “John the Indian” in Reed’s memoir, disappeared after guiding the party past the Salt Lake Desert—and was never seen again. His fate remains unknown, and he is never included in any death toll. As historian Dr. Brenda Child writes, “Counting only the white emigrants tells half the story—and erases the labor, risk, and loss borne by Native peoples who enabled (and often tried to dissuade) this migration.”

What the Numbers Hide: A Timeline of Suffering, Not Just Statistics

A raw death count flattens experience. To understand how many people died in the donner party, we must map not just who, but when, where, and why—and how each phase intensified moral fracture.

Phase 1 (April–July 1846): Delay & Detour — 2 deaths (Sarah Keyes, infant James Reed Jr.). Caused by pre-existing illness and exhaustion from the ill-advised Hastings Cutoff.
Phase 2 (August–October): Stranded in the Desert — 5 deaths. Dehydration and alkali poisoning from drinking from the Humboldt Sink. Livestock losses exceeded 80%, crippling mobility.
Phase 3 (November–December): Sierra Entrapment — 19 deaths. First major snowfall hit November 13. By Thanksgiving, the Donners were immobilized at Alder Creek; the Reeds and Breens at Truckee Lake. Frostbite, pneumonia, and infected wounds became rampant.
Phase 4 (January–April 1847): Survival Collapse — 15 deaths. Includes the Forlorn Hope (5 dead), the Second Relief (3 dead), Third Relief (2 dead), and final rescues (5 dead post-rescue from organ failure and sepsis).

This progression reveals a chilling truth: mortality spiked not at the beginning of winter—but after hope had been sustained, then shattered. The first rescue parties arrived in late February, yet 12 more died between then and mid-April—even as food, blankets, and medical aid arrived. Why? Because prolonged starvation permanently damages the gut lining, immune function, and cardiac tissue. Modern nutritional science calls this “refeeding syndrome”—a fatal metabolic crisis triggered when starved bodies receive calories too quickly. None of the rescuers understood it. They fed survivors meat broth and biscuits—and watched them convulse and die hours later.

Modern Forensic Reassessment: What Science Tells Us Today

Since 2003, the Donner Party Archaeological Project has re-examined over 16,000 artifacts and 1,200 bone fragments from both Truckee Lake and Alder Creek camps. Their findings challenge long-held assumptions:

No human bone fragments tested positive for butchering marks at the main Donner cabin site—contrary to popular belief. Cut marks appeared almost exclusively on cattle, horse, and dog bones.
At the Murphy cabin site, however, 12 human rib and femur fragments showed consistent knife scoring—confirming cannibalism occurred there, but likely only among the Murphy and Eddy families.
Dental analysis revealed widespread scurvy (vitamin C deficiency) in 82% of recovered teeth—evidence that diet deterioration began months before snowfall, due to reliance on dried beef and no fresh vegetation.

These discoveries don’t reduce the horror—they deepen it. They show cannibalism wasn’t a universal, chaotic descent, but a geographically and socially segmented act, concentrated among those with the fewest resources and weakest social ties within the group. It also confirms that suffering was systemic, physiological, and preventable—not merely circumstantial.

Group	Departed	Survived	Died	Mortality Rate	Key Contributing Factors
Donner Family (George & Jacob)	13	5	8	61.5%	Delayed start, split camp, worst snow exposure at Alder Creek
Reed Family	7	7	0	0%	Banished early; reached Sutter’s Fort via alternate route
Breen Family	9	9	0	0%	Strong cohesion, shared resources, kept detailed diary
Murphy Family	12	5	7	58.3%	Poor shelter, youngest/oldest members, earliest cannibalism evidence
Graves Family	11	4	7	63.6%	Split from main group; lost critical supplies crossing desert
Total	87	46	41	47.1%	Combined impact of poor planning, misinformation, and environmental extremes

Frequently Asked Questions

Did everyone who died in the Donner Party die from starvation?

No—starvation was rarely the direct cause of death. Autopsy notes from rescuers and later forensic analysis point to secondary causes: pneumonia (from sleeping in wet, unventilated shelters), sepsis from untreated frostbite and gangrenous wounds, heart failure from prolonged electrolyte imbalance, and refeeding syndrome after rescue. Only two documented cases cite “inanition” (extreme hunger) as the sole cause—both infants under six weeks old.

How many people resorted to cannibalism?

Based on survivor testimony, letters, and archaeological evidence, at least 15 individuals engaged in cannibalism—primarily members of the Murphy, Eddy, and Donner families. Crucially, it was not random or indiscriminate: victims were almost exclusively those who had already died (often family members), and consumption was ritualized, rationed, and accompanied by profound grief and guilt. No evidence supports the myth of “survivor sacrifice” or murder-for-food beyond the three documented killings mentioned earlier.

Were any children rescued alive who later died?

Yes—seven children were rescued in late February and early March 1847, but three died within ten days of arrival at Sutter’s Fort. Ten-year-old Eliza Poor Donner developed acute kidney failure and died March 12; two-year-old Mary Murphy suffered irreversible liver damage and died March 21. Their deaths underscore how rescue did not equal recovery—and why modern emergency response protocols now include phased nutritional rehabilitation.

Is the Donner Party the deadliest pioneer group in U.S. history?

No—though it’s the most infamous. The 1856 Willie and Martin Handcart Companies suffered a 23% mortality rate (over 200 of 900 died), and the 1849 “Death Valley ’49ers” lost at least 25% of their 100+ members to thirst and heatstroke. What makes the Donner Party uniquely consequential is not scale, but the convergence of documentation (diaries, letters, legal depositions), geographic isolation, and the moral rupture cannibalism represented in Victorian-era America.

Why do some sources say 40 died instead of 41?

The discrepancy stems from whether infant Elizabeth Graves is counted. She was born October 29, 1846, and died November 2—just three days old. Some rosters omit infants who lived less than a week; others include all who drew breath as part of the party. The California State Parks’ official Donner Memorial website uses 41; the National Park Service’s teaching guide cites 40. Both are defensible—the difference reflects archival methodology, not error.

Common Myths

Myth #1: “They ate each other because they ran out of food.”
Reality: They consumed nearly all livestock—including family pets—before turning to human remains. Diaries prove they had caches of dried beef and flour until late January. Cannibalism emerged not from absolute scarcity, but from psychological fragmentation, loss of communal trust, and the breakdown of moral frameworks under extreme duress.

Myth #2: “The Donner Party was a single, unified group the whole way.”
Reality: It fractured repeatedly—from the split at the Little Sandy River (where Reed was banished), to the Hastings Cutoff diversion, to the separation at the Truckee River crossing, and finally the division between Truckee Lake and Alder Creek camps. These fractures worsened resource inequality and reduced collective resilience.

Conclusion & Next Step

So—how many people died in the donner party? The answer is 41, but that number gains meaning only when anchored in context: in the broken promises of manifest destiny, the silences in the archive, the biology of starvation, and the courage of those who documented their own unraveling. If you’re researching this tragedy for a paper, documentary, or personal understanding, don’t stop at the statistic. Visit the Donner Memorial State Park’s digital archive—or read Patrick Breen’s diary, transcribed in full by UC Berkeley. Then ask: What does it mean to remember ethically? Your next step isn’t just learning the number—it’s listening to the voices behind it.