How Old Is Prince William – Age, Family Facts and Timeline

Prince William, the heir apparent to the British throne, is 43 years old as of 2025. Born on June 21, 1982, at St Mary’s Hospital in London, he became the first direct heir to the throne to be born in a hospital setting. His position in the line of succession has placed him at the center of royal life for over four decades, with his journey from young royal to Prince of Wales marking significant milestones for the British monarchy. Understanding his age and the ages of those closest to him provides insight into the generational shift occurring within the royal family.

As the elder son of King Charles III and the late Princess Diana, Prince William has witnessed substantial changes within the royal institution. His upbringing, education, and eventual marriage to Catherine Middleton have all contributed to his preparation for eventual assuming of royal duties. The Wales family represents the next generation of the monarchy, with William’s three children—George, Charlotte, and Louis—following behind him in the line of succession.

How Old is Prince William?

Prince William was born on June 21, 1982, making him 43 years old in 2025. His birth at St Mary’s Hospital in London marked a historic moment as the first direct heir to the British throne to be born in a hospital rather than a palace. He was christened on August 4, 1982, at Buckingham Palace by the then Archbishop of Canterbury, Robert Runcie.

• Born June 21, 1982, at St Mary’s Hospital in London—the first heir to the throne born in a hospital
• Celebrated his 43rd birthday in June 2025
• Christened at Buckingham Palace on August 4, 1982
• Educated at Wetherby School, Ludgrove School, and Eton College
• Earned a Master of Arts degree in geography from the University of St Andrews
• Created Prince of Wales on September 9, 2022, following Queen Elizabeth II’s death

How Old is Prince William’s Wife?

Catherine, Princess of Wales, was born on January 9, 1982, making her 42 years old in 2025. She shares the same birth year as her husband, with William being approximately five months older. Their ages have been a point of public interest since their relationship began during their university years at St Andrews.

The Princess of Wales has established herself as a prominent public figure, undertaking numerous royal duties alongside her husband. Her preparation for her future role as queen consort has been underway for years, with her work in arts, mental health, and early childhood development earning widespread recognition. The couple’s shared age and similar backgrounds have been cited as factors in their relatively long and stable relationship.

Catherine and William met while studying geography at the University of St Andrews in Scotland. Their relationship developed over several years before their engagement was announced in 2010. The Princess’s background as a commoner—born in Reading, Berkshire, to Michael and Carole Middleton—represents a historic shift in royal marriage patterns, demonstrating the modernizing trajectory of the British monarchy under William’s generation.

How Old Are Prince William’s Kids?

Prince William and Catherine have three children, each occupying significant positions in the British line of succession. Prince George Alexander Louis, the eldest, was born on July 22, 2013, making him 11 years old in 2025. As the future king’s firstborn, George holds the position of third in line to the throne.

Prince George

Born on July 22, 2013, at St Mary’s Hospital in London—ironically the same hospital where his father was born—Prince George is 11 years old in 2025. He attended Lambrook School in Berkshire for his early education and is expected to follow in his father’s footsteps by attending Eton College. George’s position as the eldest child of the heir apparent makes him the third in line to the British throne.

Princess Charlotte

Princess Charlotte Elizabeth Diana was born on May 2, 2015, at the same St Mary’s Hospital in London. She is 10 years old in 2025. Notably, Charlotte holds the position of fourth in line to the throne—a historic position for a granddaughter of the monarch, particularly significant given the traditional male-preference primogeniture that previously governed royal succession before the 2013 changes.

Prince Louis

The youngest child, Prince Louis Arthur Charles, was born on April 23, 2018. At 7 years old in 2025, Louis is fifth in line to the throne. His birth at the Lindo Wing of St Mary’s Hospital followed the established pattern for recent royal births. Louis is expected to eventually attend school alongside his siblings, continuing the Wales children’s relatively private upbringing despite their public profiles.

How Old Was Prince William When He Got Married?

Prince William was 28 years old when he married Catherine Middleton on April 29, 2011, at Westminster Abbey in London. The wedding, attended by approximately 1,900 guests including royalty, heads of state, and celebrity figures, became a major global media event. William was created Duke of Cambridge at the time of his marriage, granting Catherine the title Duchess of Cambridge.

The couple’s engagement had been announced in November 2010, following several years of speculation about their relationship. William had reportedly purchased the engagement ring that belonged to his mother, Princess Diana, creating a poignant connection between the new royal couple and William’s late mother.

Their wedding at Westminster Abbey held particular significance, as the venue has hosted numerous royal occasions over centuries. The marriage represented a union between the modernizing younger generation of royals and the traditional expectations of the monarchy. By age 28, William had already completed his university education, served in the military, and undertaken initial royal duties—all of which had prepared him for married life as a working royal.

Prince William: Key Milestones by Age

Tracing Prince William’s journey through key ages reveals how his life has intersected with significant royal and personal events. From childhood through his current position as heir apparent, his age has often been a defining factor in his eligibility for certain roles and responsibilities within the monarchy.

1. Age 0 (1982): Born at St Mary’s Hospital in London on June 21
2. Age 15 (1997): His mother Princess Diana died in a car accident on August 31
3. Age 21 (2003): Graduated from University of St Andrews with a Master of Arts in geography
4. Age 26 (2008): Completed military training after serving in the Royal Navy and Army
5. Age 28 (2011): Married Catherine Middleton at Westminster Abbey
6. Age 31 (2013): First child Prince George born on July 22
7. Age 40 (2022): Became Prince of Wales following Queen Elizabeth II’s death
8. Age 43 (2025): Currently serving as heir apparent, preparing for eventual reign

Confirmed Facts vs. Unknowns

Regarding Prince William’s age, substantial documentation exists across multiple authoritative sources. His date of birth—June 21, 1982—remains firmly established, with confirmation from sources including Wikipedia, Britannica, and official royal communications.

The Royal Context of Prince William’s Age

Prince William’s current age of 43 places him in the prime of life as he prepares for eventual increased responsibilities within the monarchy. His position mirrors that of his father, King Charles III, who became heir apparent at a young age and waited decades before ascending to the throne. William’s generation represents a bridge between traditional royal expectations and modernized approaches to monarchy.

The death of his mother at age 15 profoundly shaped William’s outlook on public life and mental health advocacy. His subsequent work in mental health, addiction recovery, and homelessness has distinguished his charitable focus as distinct from previous royal generations. His age and life experience have contributed to a more open approach to discussing personal struggles.

As the Wales family continues to undertake royal duties, William’s preparation for eventual kingship includes increasingly public roles alongside Catherine. His age positions him to potentially lead the monarchy through significant transitional periods, with his children representing the fourth generation that will eventually succeed him.

What Sources Say About Prince William’s Age

Multiple authoritative sources consistently confirm Prince William’s age and biographical details. These sources, ranging from encyclopedic references to official royal publications, provide the foundation for understanding his life trajectory.

“21 June 1982 (age 43)” — Wikipedia’s official entry on Prince William, updated to reflect his current age

“William, prince of Wales, in full William Arthur Philip Louis, born June 21, 1982” — Britannica’s authoritative biography

“Current Age: 43 years, 9 months, 24 days” — Britroyals, a specialized royal reference source

Summary

Prince William is 43 years old, having been born on June 21, 1982. His wife Catherine is 42, and together they have three children: Prince George (11), Princess Charlotte (10), and Prince Louis (7). At age 28, William married Catherine at Westminster Abbey, and at age 40, he was created Prince of Wales following his grandfather’s death. His position as heir apparent places him at the center of the British monarchy’s generational transition, with his family representing the next three generations of royal succession.

The impact of his mother’s death, the late Princess Diana, has been significant throughout his life, influencing his approach to royal duty and mental health advocacy. As he continues to prepare for eventual kingship, his age and experience position him as a key figure in the modern British monarchy.

Frequently Asked Questions