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Who is the oldest person to have ever lived in the US?

4 min read

The human quest for longevity has fascinated us for centuries, with records of extreme old age constantly being challenged and verified. In this landscape of extraordinary lifespans, one American has stood out as the undisputed record holder for decades. So, who is the oldest person to have ever lived in the US?

Quick Summary

The oldest person to have ever lived in the US was Sarah Knauss, a Pennsylvania native who died in 1999 at the remarkable age of 119 years and 97 days. Her longevity has been meticulously verified, placing her among the longest-lived individuals in human history.

Key Points

  • Sarah Knauss: She is the oldest person to have ever lived in the US, dying at 119 years, 97 days.

  • Long-Lived Family: Knauss came from a family with a history of longevity; her daughter lived to be 101.

  • Low Stress Personality: She was known for her calm demeanor and low-stress approach to life, a trait common in supercentenarians.

  • Unconventional Diet: Despite her long life, Knauss notably had a significant fondness for sweets and disliked vegetables.

  • Record Verification: Her age was rigorously authenticated by organizations like the Gerontology Research Group and Guinness World Records.

  • Global Context: Her record places her as the second-oldest verified person in world history, behind Jeanne Calment of France.

In This Article

The Life of Sarah Knauss: An American Legend

Born Sarah DeRemer Clark on September 24, 1880, in Hollywood, Pennsylvania, Sarah Knauss lived a quiet but exceptionally long life. Her journey spanned three centuries, from the late 19th century to the cusp of the 21st. The Gerontology Research Group (GRG) and Guinness World Records have both officially authenticated her record, confirming her status as the longest-lived American ever recorded.

Knauss lived through a period of immense change, from the dawn of the automobile and the first flight to the internet age. She married Abraham Lincoln Knauss in 1901 and lived a largely domestic life as a homemaker. Her husband passed away in 1965, but their family's longevity was a notable trait, with their only child, Kathryn, living to be 101 herself.

Personality, Habits, and the Pursuit of Authenticity

While science searches for definitive answers to the mystery of extreme longevity, Sarah Knauss offered her own simple, anecdotal advice. When asked about her secrets to a long life, she famously responded with a carefree attitude. Those close to her described her as exceptionally friendly, low-stress, and consistently calm. This temperament is often cited by researchers studying centenarians and supercentenarians, suggesting a link between personality and longevity.

Her diet also defied conventional wisdom. Her great-granddaughter once claimed that Knauss "hated vegetables" and was known for having a lifelong fondness for sweets and turtle soup. This demonstrates that while lifestyle factors are important, the genetic component of extreme aging is likely a far more dominant force. Knauss was a non-smoker and maintained a healthy weight throughout her life, but her case challenges the idea that a flawless diet is required to live to nearly 120.

Validation of her age was a rigorous process. Researchers and genealogists examined numerous census records, family documents, and other historical evidence to verify her birth and death dates without dispute. This level of verification is critical for establishing official longevity records, setting Knauss apart from unauthenticated claims of extreme age.

Knauss in the Context of Global Longevity

While Sarah Knauss holds the record for the United States, she is not the oldest person ever documented worldwide. That title belongs to the French supercentenarian Jeanne Calment, who lived to be an astonishing 122 years and 164 days, from 1875 to 1997. Calment remains the only person in history to be fully documented as living past the age of 120. Comparing these two women highlights the rarity of their achievements and places Knauss's record in a global perspective. The study of individuals like Knauss and Calment provides gerontologists with invaluable data on the limits of human lifespan.

Other Notable American Supercentenarians

  • Elizabeth Francis: Reached 115 years old, a Houston resident who passed away in 2024. She was the oldest living person in the US before her death.
  • Edie Ceccarelli: Lived to be 116 years old and was the oldest living American before her passing in early 2024.
  • Christian Mortensen: The oldest recorded American man, who lived to be 115 years and 252 days old.

Demographics of Extreme Longevity

Studying supercentenarians reveals several patterns. Most individuals who achieve such extreme ages are women. Researchers theorize this is due to a combination of genetic, hormonal, and lifestyle factors. While environment and healthy living certainly play a role, the dominant factor appears to be a unique genetic disposition that allows for extended longevity. Family history of living to old age, as in the case of Knauss and her daughter, is a strong indicator of this genetic component.

Comparing US and Global Longevity Records

This table illustrates how Sarah Knauss's record stands in comparison to other extreme longevity achievements globally and within the US.

Rank Name Age Birthplace Record Type
1 Jeanne Calment 122 years, 164 days France World's Oldest Ever
2 Sarah Knauss 119 years, 97 days USA Oldest American Ever
3 María Brañas Morera 117 years, 168 days USA Second Oldest American Ever (Spanish-born)
4 Kane Tanaka 119 years, 107 days Japan Second Oldest Worldwide

For more information on the world's longest-lived individuals, consider consulting authoritative resources such as The USC Leonard Davis School of Gerontology, which maintains robust research on superagers and the science of human longevity.

A Legacy of Remarkable Resilience

The story of Sarah Knauss serves as a testament to the resilience of the human body and spirit. Her life, though spanning a quiet existence, was a phenomenon that captured the attention of the world. Her laid-back philosophy and unconventional diet highlight the complexity of the factors contributing to extreme longevity, a field of study that continues to evolve. While her record for the US is firmly established, her legacy encourages ongoing research into the mysteries of aging.

Frequently Asked Questions

The oldest person to have ever lived in the United States was Sarah Knauss. She was born in Pennsylvania in 1880 and passed away in 1999, having lived for 119 years and 97 days.

The longest confirmed human lifespan belongs to Jeanne Calment of France, who lived to be 122 years and 164 days old. She passed away in 1997.

Researchers verify the age of supercentenarians through a process called genealogical validation. This involves cross-referencing multiple historical documents, such as birth certificates, census records, marriage licenses, and other public records, to prove an individual's age.

When asked, Sarah Knauss gave simple advice, such as staying busy and not worrying about age. Those who knew her noted her calm, stress-free disposition, which is often a characteristic of long-lived individuals.

Yes, other notable American supercentenarians include Elizabeth Francis, who died at 115 in 2024, and Christian Mortensen, the oldest recorded American man, who died at 115 in 1998.

While lifestyle and environment are factors, research suggests that genetics play a very significant role in achieving extreme longevity. Sarah Knauss’s case supports this, as her daughter also lived to be over 100.

Sarah Knauss's diet was famously unconventional. She had a known preference for sweets and expressed a strong dislike for vegetables, showing that extreme longevity can occur despite not adhering to a perfect diet.

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice. Always consult a qualified healthcare provider regarding personal health decisions.