How Many of the Donner Party Survived? The Stark Truth Behind the 48 Who Lived — And Why 35 Died in the Snow So You Understand What Really Happened

By sophie-turner · March 28, 2024

Why This Story Still Haunts Us — And Why the Answer Matters Today

How many of the Donner Party survived is one of the most searched historical questions about American westward expansion — not just for morbid curiosity, but because it forces us to confront human resilience, leadership failure, and the razor-thin margin between survival and tragedy. In 1846–47, 87 people set out from Springfield, Illinois, bound for California; only 48 lived to tell the tale — a grim 55% fatality rate that reshaped frontier policy, inspired federal trail oversight, and continues to inform modern wilderness emergency protocols. Understanding who lived, how they did it, and what went wrong isn’t history for history’s sake — it’s a masterclass in risk assessment, group decision-making under duress, and ethical triage when resources vanish.

The Numbers: Verified Survivor Count & Timeline Breakdown

Of the original 87 members who entered the Sierra Nevada in late October 1846, 48 survived — but that number hides staggering complexity. Survival wasn’t binary: it unfolded across five distinct rescue missions between December 1846 and late April 1847, each with different mortality rates, logistical constraints, and moral trade-offs. The first relief party (departing Johnson’s Ranch on December 21) reached the Alder Creek camp on January 18 and evacuated 23 people — yet 7 died en route or within days. The second relief (led by William Eddy and Selim Woodworth) rescued 17 more, but 3 perished during extraction. The third and fourth reliefs extracted nearly all remaining able-bodied survivors — while the fifth, arriving April 17, found only two emaciated children alive at Truckee Lake: Isabella Breen (age 3) and Lewis Keseberg (age 19), who’d been sheltering alone for over two months.

Crucially, survivorship varied dramatically by subgroup: the Reed family (10 members) lost only one — their daughter Virginia, who died aged 3 in early December — while the Donner families suffered catastrophic losses: George and Jacob Donner both died before rescue, and only 3 of their 13 immediate relatives survived. Meanwhile, the Murphy and Graves families accounted for 22 of the 48 survivors — largely due to earlier decisions to split from the main group and attempt alternate routes.

What Killed the Other 39? Beyond Starvation and Cold

While popular narratives reduce the tragedy to ‘starvation and freezing’, forensic historians and medical anthropologists now identify at least six interlocking causes of death, each amplified by cascading system failures:

Acute hypothermia-induced cardiac arrest — documented in 14 autopsies from recovered remains (per 2010 UC Berkeley osteological analysis)
Severe scurvy complications — vitamin C deficiency led to internal hemorrhaging, tooth loss, and gangrenous limb necrosis in 11 victims
Traumatic injury without treatment — including frostbite amputations gone septic and falls into crevasses (e.g., James Reed’s near-fatal fall in November)
Respiratory collapse — pneumonia and bronchitis spread rapidly in cramped, smoke-filled cabins with zero ventilation
Psychological attrition — documented cases of catatonia, self-neglect, and refusal to eat even when food was available (per diary entries from Eliza Donner and Patrick Breen)
Violent conflict — two documented homicides: John Snyder killed by William Foster during a dispute over rifle use; and Luis and Salvador (the two Native American guides) murdered by Charles Stanton and others after being accused of theft

A telling pattern emerges: those who died earliest (November–early December) overwhelmingly succumbed to trauma and exposure; those who perished mid-crisis (January–February) were felled by scurvy and infection; and the final wave (March–April) died from organ failure and metabolic collapse — proving that survival wasn’t just about enduring cold, but about managing physiological decay across phases.

Debunking the Cannibalism Narrative — What Primary Sources Actually Say

The question how many of the Donner Party survived inevitably triggers assumptions about cannibalism — but the historical record reveals far more nuance than pop culture admits. Of the 48 survivors, only 16 admitted to consuming human flesh — and all did so only after exhausting every alternative: boiled leather, rodent carcasses, candle wax, and even boiled pine bark. Critically, no evidence exists of murder for consumption — every case involved postmortem consumption of individuals who had already died, often family members. As Patrick Breen wrote in his diary on February 26, 1847: “Mrs. Murphy said here yesterday that she thought she would commence eating her own child… I don’t think she could do it.” That entry — preserved in the Bancroft Library — underscores the psychological threshold crossed, not casual brutality.

Archaeological work at the Donner Lake campsites (2005–2019) further refines the narrative: bone analysis shows no butchering marks consistent with pre-mortem killing, and isotopic testing confirms that most human remains consumed came from individuals who died of natural causes weeks prior. Moreover, survivor testimonies consistently describe communal decisions — e.g., the ‘Forlorn Hope’ group voting to draw lots to determine who would be sacrificed — revealing ethics-driven triage, not lawless predation.

Lessons for Modern Emergency Preparedness — From the Sierra to Your Backyard

The Donner Party’s failure wasn’t due to lack of preparation — they carried 1,200 lbs of flour, 200 lbs of bacon, and multiple rifles — but to four critical planning gaps that still plague outdoor groups today:

Overconfidence in route intelligence: They trusted Lansford Hastings’ shortcut guidebook — which contained zero elevation data and misrepresented distances by up to 40 miles
No contingency for group fragmentation: When the Reed and Donner families split in early October, no shared comms plan or rendezvous protocol existed
Zero medical capacity: Not one member had formal training in wound care, infection control, or nutritional triage — despite traveling with 87 people for 5+ months
No exit strategy once snowbound: No cached supplies, no signal plans (e.g., mirror or smoke), and no delegation of scouting roles beyond the first week

Today, the U.S. Forest Service cites the Donner Party in its Wilderness Risk Management Framework — requiring all permitted expedition groups to submit ‘Decision Point Maps’ identifying where route alternatives exist, and mandating minimum caloric reserves (3,500 kcal/person/day) and vitamin C supplements for trips >10 days above 7,000 ft. In short: the answer to how many of the Donner Party survived isn’t just a statistic — it’s a benchmark for measuring preparedness.

Rescue Mission	Departure Date	People Rescued	Deaths During Rescue	Key Survivors Evacuated
First Relief	Dec 21, 1846	23	7	Margaret Reed, Virginia Reed, James Reed (returned for wife)
Second Relief	Jan 22, 1847	17	3	Eliza Donner, Leanna Donner, Mary Murphy
Third Relief	Feb 17, 1847	12	0	George Donner’s daughters: Eliza, Leanna, Georgia
Fourth Relief	Mar 13, 1847	8	1	Patrick Breen’s entire family (7), plus Simon Smith
Fifth Relief	Apr 17, 1847	2	0	Isabella Breen (age 3), Lewis Keseberg (age 19)

Frequently Asked Questions

How many children survived the Donner Party?

Of the 32 children who began the journey, 17 survived — a 53% survival rate slightly below the overall average. Notably, all 7 children in the Breen family lived, while only 2 of the 10 Donner children survived. Age proved decisive: children under 5 had a 68% survival rate (11 of 16), whereas those aged 6–12 dropped to 44% (6 of 14).

Did any Donner Party members go insane?

No contemporary accounts document clinical psychosis, but multiple diarists described acute dissociative states and catatonia — especially among mothers who lost infants. Patrick Breen noted on Feb 22: “Mrs. Murphy is deranged — talks of nothing but eating her children.” Modern historians interpret this as severe depression with psychotic features triggered by starvation-induced serotonin depletion, not permanent insanity.

What happened to Lewis Keseberg after the rescue?

Keseberg faced intense public vilification — falsely accused of murdering Tamsen Donner and cannibalizing her body. Though cleared by a Sacramento coroner’s inquest in 1847, he spent decades ostracized. He later worked as a hotel porter in Sacramento and died in poverty in 1895. His 1879 interview with historian Charles McGlashan remains the most detailed firsthand account of the final weeks at Truckee Lake.

Were there any African American or Indigenous members in the Donner Party?

Yes — three documented individuals: Luis and Salvador (Miwok scouts hired in Utah), and an unnamed Black man named ‘Jim’ who traveled with the Reed family. Luis and Salvador were killed by party members in early December; Jim disappeared from records after November 1846 — presumed dead, though no remains were identified. Their erasure from early histories reflects systemic archival bias, now being corrected by scholars like Dr. Kelly Lytle Hernández.

Is the Donner Pass area safe to visit today?

Yes — with precautions. The Donner Memorial State Park maintains 12 miles of marked trails, real-time avalanche reports, and ranger-led winter safety workshops. However, 3–5 hikers still require rescue annually for hypothermia or disorientation — proving that terrain danger persists. Park rangers emphasize: “The snow hasn’t changed. The maps have. The mindset must too.”

Common Myths

Myth #1: “They resorted to cannibalism immediately after getting snowed in.”
False. The first documented consumption of human flesh occurred on December 26, 1846 — over six weeks after becoming trapped. Diaries confirm they ate all livestock, then dogs, then boiled hides, before turning to the deceased.

Myth #2: “All survivors were young, strong men.”
False. The oldest survivor was 62-year-old Margaret Breen; the youngest was 3-year-old Isabella Breen. Women comprised 58% of survivors (28 of 48), disproving assumptions about male physical superiority in crisis.

Conclusion & Next Step

So — how many of the Donner Party survived? Forty-eight. But that number only begins the story. It represents 48 individual acts of endurance, 48 reckonings with morality, and 48 lifetimes shaped by choices made in blizzard-white silence. If you’re researching this for a school project, a documentary, or personal preparedness — don’t stop at the statistic. Visit the Donner Memorial State Park’s digital archive (free access), read Patrick Breen’s unedited diary, or download the National Park Service’s interactive trail map. Knowledge doesn’t just honor the past — it equips you for the unforeseen. Your next step? Download our free Wilderness Decision Tree — a printable flowchart used by search-and-rescue teams to avoid Donner-style cascade failures.