Liam Costner is an American real estate agent best known as the son of the award-winning actor, producer, and director Kevin Costner and actress Bridget Rooney. His father is widely known for starring in films and television series such as Yellowstone, Dances with Wolves, and Robin Hood: Prince of Thieves. Unlike his parents, Liam has distanced himself from the entertainment industry.
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TABLE OF CONTENTS
Key takeaways
- Liam Costner was born on 15 November 1996 in Los Angeles, California.
- He works as a real estate agent for the Frankel Bell Group in North Palm Beach County.
- His parents, Kevin Costner and Bridget Rooney, never married; Kevin requested a paternity test before establishing a trust fund for Liam.
- Liam has six half-siblings from his father's other relationships. They include three from Kevin's first marriage to Cindy Silva and three from his former marriage to Christine Baumgartner.
- He also has one half-sibling from his mother's marriage to billionaire William Koch.
- Liam is an avid sports lover. He played baseball and football at school.
Profile summary
Full name | Liam Costner |
Gender | Male |
Date of birth | 15 November 1996 |
Age | 29 years old (as of 2026) |
Zodiac sign | Scorpio |
Place of birth | Los Angeles, California, United States |
Current residence | Los Angeles, California, United States |
Nationality | American |
Ethnicity | White |
Religion | Christianity |
Sexuality | Straight |
Height in feet | 5'8" |
Height in centimetres | 173 |
Weight in pounds | 137 |
Weight in kilograms | 62 |
Hair colour | Blonde |
Eye colour | Blue |
Father | Kevin Michael Costner |
Mother | Bridget Rooney |
Siblings | 7 half-siblings |
Relationship status | Single |
Profession | Real estate agent |
Liam Costner's biography
The American realtor was born on 15 November 1996 in Los Angeles, California, United States. He is 29 years old as of 2026, and his zodiac sign is Scorpio. He is an American citizen of white descent.
What does Liam Costner do?
Kevin Costner's son, Liam, is a real estate agent. He works for the North Palm Beach County Realtor Frankel Bell Group. Not much is known about his career, as he keeps his life under wraps.
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Liam Costner's parents and siblings
Liam is among Kevin Costner's children. His parents are well-known in the entertainment industry. His father, a Hollywood actor and producer, has earned several accolades throughout his career. Some include the Academy Awards, the Primetime Emmy Award, and the Golden Globe Awards. He made his debut in acting in 1981.
His mother, Bridget Rooney, though not a prominent actress, is known for her role in the short film Zombie or Not Zombie. Liam Costner and Bridget Rooney share a strong bond. His parents dated for around three years but never tied the knot. They parted ways before Liam was born.
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His father requested a paternity test to prove he was his son. After confirming he was his son, he set up a sizable trust fund for him. His mother was confident that Kevin was her son's father. In a 1996 New York Magazine interview, Bridget said:
"I'm 110 percent sure who the father is. I'm just enjoying my pregnancy."
Bridget, an Irish Catholic, also said she decided to proceed with the pregnancy with or without Costner's help.
"There was only one way to go with this. I'm 34 years old, and I'm fortunate to have a baby. I didn't even think of the A word, only the B word."
Liam Costner's siblings
The American realtor has seven half-siblings. Three older half-siblings, Annie, Lily, and Joseph, are from his dad's first marriage with Cindy Silva. He also has three younger half-siblings, Cayden Wyat, Hayes Logan, and Grace Avery, from his father's former marriage with Christine Baumgartner, which ended in 2024.
Source: Getty Images
His older half-siblings are also in the entertainment industry. Annie is a film producer, Lily began her career in acting before shifting her focus to music, and Joe works primarily in music and sound engineering. Liam also has a half-sister, Kaitlin K.K. Koch, from his mother's marriage to an American billionaire, Bill Koch.
Is Liam Costner married?
Liam Costner's relationship status is single. He has not publicly confirmed a partner, wife, or children. He is known for keeping his personal life entirely private, in keeping with his wider approach to staying out of the public eye. As of 2026, he has no confirmed romantic partner or children.
Liam Costner's net worth
The realtor's net worth is not publicly confirmed by any official financial publication. His father, Kevin Costner, has an estimated net worth of around $100 million in 2026 from his decades-long Hollywood career. Previous estimates in 2025 valued him at around $200 million.
Liam's estimated income sources include:
- Real estate commissions from the Frankel Bell Group.
- A trust fund established by Kevin Costner after the paternity confirmation.
- Family inheritance.
FAQs
- Who is Liam Costner? He is a celebrity kid and real estate agent, widely known as Kevin Costner's son.
- When is Liam Costner's birthday? He celebrates his birthday on 15 November.
- How old is Liam Costner? He is 29 years old as of 2026.
- Who is Liam Costner's mother? His mother is Bridget Rooney.
- Who are Liam Costner's parents? His father is Kevin Costner, an American actor, while his mother is Bridget Rooney.
- Who are Kevin Costner's children? He has seven children: Annie, Lily, Joseph, Cayden Wyat, Hayes Logan, Grace Avery, and Liam.
- What is Liam Costner's height? He is 5 feet 8 inches or 173 centimetres tall.
- Are Liam Hemsworth and Liam Costner the same person? No. Liam Hemsworth is an Australian actor known for The Hunger Games. Liam Costner is an American real estate agent and Kevin Costner's son. They are two entirely different people.
- Does Kevin Costner have a relationship with his kids? Yes. Despite a difficult start, he requested a paternity test before acknowledging Liam; Kevin has supported all his children. He set up a trust fund for Liam and has publicly acknowledged all seven of his children.
- Does Liam Costner have children? As of 2026, Liam has not publicly confirmed having any children.
Liam Costner is a celebrity child and a real estate agent from the United States. He is widely recognised as the son of prominent American Hollywood actor Kevin Costner and his ex-partner Bridget Rooney. He currently resides in Los Angeles, California, United States.
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