Liam Costner is the son of Hollywood star Kevin Costner and his former partner Bridget Rooney. He was born on November 15, 1996, in America and is one of Kevin Costner’s seven children from three different women.
Liam has kept a low profile and has not followed his father’s footsteps into acting. Instead, he works as a real estate agent in Florida and has an estimated net worth of $1 million. Here are some more facts about Liam Costner and his family.
Age, Birthday & Biography
Liam Timothy Costner, the son of renowned actor Kevin Costner, was born on November 15, 1996. As of 2022, Liam Costner is 26 years old. While specific details about his birthplace were not provided, it is known that he holds American nationality, indicating his connection to the United States.

Regarding Liam Costner’s education, it is mentioned that he attended a reputed university. However, specific details about the university or his field of study were not provided. This suggests that Liam has pursued higher education and likely received a quality academic foundation, which can open doors to various opportunities in his chosen career path.
Liam Costner’s Parents
Liam Costner was born as Liam Timothy Costner to Kevin Costner and Bridget Rooney. His parents were never married and had a brief relationship in 1995 after Kevin divorced his first wife Cindy Silva. Kevin reportedly did not acknowledge Liam as his son until a paternity test confirmed it. He then set up a trust fund for him and paid child support.

Liam grew up with his mother and stepfather Bill Koch, a billionaire businessman and collector who married Rooney in 2005. Koch is the brother of Charles and David Koch, the owners of Koch Industries. Liam has adopted his mother’s and stepfather’s last names and goes by Liam Rooney Koch.
Siblings
Liam has six siblings from his father’s side. He has three older half-siblings from Kevin’s first marriage: Annie (born in 1984), Lily (born in 1986), and Joe (born in 1988). He also has three younger half-siblings from Kevin’s second marriage to Christine Baumgartner: Cayden (born in 2007), Hayes (born in 2009), and Grace (born in 2010).

Liam has a close relationship with his siblings and often attends family gatherings with them. He also supports his father’s career and has accompanied him to several movie premieres and award shows.
Liam Costner BIO/WIKI
Full Name | Liam Timothy Costner |
Date of Birth | November 15, 1996 |
Age | 26 (as of 2022) |
Birthplace | The United States of America |
Nationality | American |
Height | 5 feet 8 inches |
Weight | 62 kg |
Zodiac Sign | Scorpio |
Net Worth | $1 million (approx.) |
Parents | Kevin Costner Bridget Rooney |
Stepfather | Bill William Koch |
Siblings | Annie Costner, Joe Costner, Lily Costner, Joseph, Cayden, Hayes & Grace |
Career | Real estate agent |
liamcostner | |
Homepage | Dreshare.com |
Career
Liam Costner has not pursued a career in the entertainment industry like his father or some of his siblings. He has chosen a different path and works as a real estate agent for Northern Palm Beach County realtor Frankel Bell Group. He specializes in luxury properties and has sold several multimillion-dollar homes in Florida.
Liam has also inherited a fortune from his father and stepfather. His father Kevin Costner has a net worth of $800 million as of 2023, according to Celebrity Net Worth. He has earned his wealth from his successful acting, directing, producing, and singing career.

He has starred in many blockbuster movies such as Dances with Wolves, The Bodyguard, The Untouchables, JFK, Robin Hood: Prince of Thieves, Waterworld, The Postman, Tin Cup, Field of Dreams, Hidden Figures, Molly’s Game, The Highwaymen, Let Him Go, and Yellowstone.
Controversy
The divorce battle between Kevin Costner and his estranged wife Christine Baumgartner has taken a bitter turn, as the two sides disagree over who gets to stay in their marital home. Costner, a famous actor known for his roles in movies like “Yellowstone” and “Field of Dreams”, claims that he has the right to evict Baumgartner and their three children from the house, based on their prenuptial agreement that gave her 30 days to move out after filing for divorce.
However, Baumgartner’s lawyer argues that Costner has no legal basis for his request and that it would be unfair and harmful to uproot the children from the only home they have ever known.
The lawyer also accuses Costner of using his wealth and power to pressure Baumgartner into accepting his financial demands, while ignoring her contributions to their marriage and family. The couple married in 2004 and have three kids: Cayden, 16, Hayes, 14, and Grace, 13. Costner also has four older children from previous relationships.
Net Worth
Liam Costner’s own net worth is estimated to be around $1 million as of 2023. He lives a lavish lifestyle and enjoys traveling around the world. On the other hand, his stepfather Bill Koch has a net worth of $1.8 billion as of 2023, according to Forbes.

He is the founder and president of Oxbow Carbon LLC, a company that produces and markets petroleum coke, coal, metallurgical coke, calcined coke, activated carbon products, natural gas liquids, gasification products, ethanol products, asphalt products, fertilizers products, etc.
Girlfriend, Wife & Kids
Liam Costner is currently single and has not been linked to anyone publicly. He prefers to keep his personal life private and does not share much about his dating history or romantic interests on social media.

Liam is active on Instagram under the handle @liamcostner where he posts pictures of himself with his family, friends, pets, travels, etc. He also uses the hashtag #liamcostner to tag some of his posts. He has over 10k followers on the platform.
Liam is also an animal lover and owns two dogs named Lola and Lila. He often posts adorable photos of them on his Instagram account.
Some Facts About Liam Costner
- Costner’s full name is Liam Timothy Costner.
- He was born on November 15, 1996, in America.
- Liam is the son of Kevin Costner and Bridget Rooney.
- He has six siblings: Annie, Lily, Joe, Cayden, Hayes, and Grace.
- He is the stepson of Bill Koch, a billionaire businessman and collector.
- He works as a real estate agent for Northern Palm Beach County realtor Frankel Bell Group.
- Liam has a net worth of $1 million as of 2023.
- He is single and has not been linked to anyone publicly.
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