Liam Costner is best known as the son of Oscar-winning actor and director Kevin Costner and Bridget Rooney, born in 1996. The story of Liam Costner and Kevin Costner is mostly a story about a paternity question that became public and a young man who has stayed out of the spotlight since. If you’re asking who is Liam Costner beyond that outline, there isn’t much on the record, and the pages offering a precise Liam Costner age or Liam Costner net worth rarely say where the numbers came from.
He gets searched whenever his father is in the news. Costner’s Yellowstone run, the Horizon films and his 2024 divorce from Christine Baumgartner send a fresh wave of readers looking for his other children, and the results are a pile of near-identical pages. One calls him a rising Hollywood star. Another gives him an $800 million fortune. A third says he has a Yale-standard education, in the same breath as saying his schooling is secret.
This profile is deliberately shorter on colour and longer on caveats. It sticks to what Wikipedia and a few named outlets say about the family, flags everything else as repeated rather than confirmed, and leaves out his address, his relationships, his health and any claim about his private finances.
Liam Costner Quick Facts
| Topic | Available Information |
| Name | Liam Costner |
| Known for | Son of actor Kevin Costner |
| Marriage | No verified information |
| Parents | Kevin Costner and Bridget Rooney, per Wikipedia and Smooth Radio |
| Children | None publicly reported |
| Hometown | Los Angeles, per one profile page; unconfirmed |
| Birth date and age | Born 1996; the day and month vary between pages (October 15 or November 15) |
| Profession | Not publicly confirmed; some pages say real estate |
| Education | Not publicly confirmed |
| Current status and location | No reliable public information |
| Social media | No verified account found |
| Net worth | No reliable independently verified figure |
The first three rows and the birth year are well supported. From “hometown” down, it’s mostly repetition.
Who Is Liam Costner?
A private young man from Los Angeles who is known almost entirely as Kevin Costner’s son with Bridget Rooney. Wikipedia’s article on Costner says he has seven children, and lists a son born in 1996 with Rooney, who later became the wife of billionaire Bill Koch. It doesn’t name the boy.
Smooth Radio’s April 2025 relationship history, written by Hannah Watkin, names Liam as the son born to Rooney in 1996. That’s the firm ground. I found no film credits, no bylined interview and no verified social media account in his name, and the outlets that cover Costner’s family say little about him beyond his birth year and parentage.
Why Is Liam Costner Famous?
He isn’t, quite. He’s searched for because of his father.
Kevin Costner won two Academy Awards for Dances with Wolves and has spent decades as one of Hollywood’s best-known leading men and directors. Wikipedia says he married Cindy Silva in 1978 and divorced in 1994, then married Christine Baumgartner on September 25, 2004, with the divorce finalised on February 20, 2024. A family tree that big, with seven children across three relationships, makes readers curious about each one, and Liam is the least visible.
Liam Costner and Kevin Costner: The Paternity Question
Smooth Radio says Costner first hesitated to confirm he was Liam’s father, then did so after a paternity test that Rooney requested. That’s the only account from a named outlet I could find, and it’s short.
Plenty of pages go further and disagree. One says Costner demanded the test during the pregnancy. Another says he accepted responsibility at once and set up a trust fund. None cites a court filing or a statement from either parent, and the pages contradict each other on who asked for the test. I’d call the outline reliable and every detail beyond it unverified.
Liam Costner’s Mother
Bridget Rooney is his mother, according to Wikipedia and Smooth Radio. Wikipedia adds that she later became the wife of billionaire Bill Koch. That’s all I’ve repeated. Many profile pages add her family background, a film role and a list of charities, and none of those pages names a source for it.
I haven’t gone into her life beyond the sentence above. She’s a private person who appears in this story only because she’s his mother, and the claims about her are the same sort of unsourced filler as the ones about him.
Liam Costner’s Siblings
Wikipedia says Costner has seven children. With Silva, two daughters born in 1984 and 1986 and a son born in 1988. With Rooney, Liam, born in 1996. With Baumgartner, two sons born in 2007 and 2009 and a daughter born in 2010. That makes Liam one of seven, with six half-siblings.
The younger three are still minors, so I haven’t named them here. Some pages claim a close bond between the siblings, which is plausible but not documented. Others say Costner speaks warmly of all his children. I couldn’t find a quote that backs either claim.
What Does Liam Costner Do for a Living?
Nobody has confirmed a profession. Several pages say he works in real estate, and one bases that on a professional profile under a different name that it never ties to him. Another says he’s an actor, and a third says plainly that he isn’t. Pages that say he’s in Yellowstone have no cast list to back them, and two pages say plainly that he isn’t.
It’s possible he works in property. It’s also possible one page guessed and the rest copied it. There’s no way to tell from the outside, and I haven’t repeated an employer or a city.
Liam Costner’s Age and Birthplace
His birth year is 1996, which Wikipedia and Smooth Radio agree on. The day isn’t confirmed. One page says November 15, 1996, in Los Angeles, and another says October 15, 1996, in the United States, and neither names a source.
If October 15 is right, he turned 30 this month. If November 15 is right, he’s 29 until mid-November. Either way, 30 is the number to expect by the end of 2026. That’s an estimate from subtraction, not a record. Here’s something worth noticing: the page that gives him an age of 27 “as of March 2024” is doing the same arithmetic from the same shared date, which tells you the two pages aren’t independent checks on each other.
Is Liam Costner Married?
No verified information exists. One profile table lists him as single, and no page I opened names a partner with a source. A relationship claim about a private adult needs far better backing than a gossip line, so I haven’t repeated any.
What Is Liam Costner’s Net Worth?
There’s no figure worth trusting. Pages offer anything from $1 million to $8 million, and one says $800 million, admitting that “it is assumed” and that he inherited stock from a stepfather’s company, which mixes up a person with a business. A trust fund of unknown size is the usual explanation, and nobody has published one.
What Kevin Costner or Bill Koch earn or own says nothing about Liam’s finances. If a site gives a net worth, ask where it came from. Repeating it doesn’t make it true.
Where Is Liam Costner Now?
No reliable source says. I haven’t confirmed a city, a country or an employer, and I wouldn’t repeat one if I had. Several profiles describe a quiet life away from cameras. It’s plausible, but it’s the kind of line that gets repeated because it sounds right.
Rumours and Mistakes About Liam Costner
The same errors keep circulating. He’s called an Oscar-winning actor, a Hollywood star, a Yellowstone cast member and a Yale graduate. Some pages mix him up with other people named Costner. Others hand him a fortune, a girlfriend and a company, none with a source.
It helps to look at how a claim is phrased. A real source says who, where and when; an invented one says “reportedly”, “it is assumed”, “many sources say” and stops there. Plenty of the Liam Costner pages do exactly that, and several admit in the same article that little about him is known.
If a profile gives a private man an education, a career and a net worth but can’t name a document or an interview, you can stop reading.
Is Liam Costner on Social Media?
No verified account has turned up. Yen.com.gh’s profile names no account of his own. Its only leads are a professional profile under a different name and a photo credit under another surname, and the page itself doesn’t confirm either is him.
That matters because fan accounts and lookalike profiles do circulate. A handle that uses the Costner name isn’t proof of anything, and neither is a profile picture of a man who resembles the actor. Unless a family member or a reputable outlet names an account, treat every one as unverified.
Why Liam Costner Stays Out of the Spotlight
I won’t invent a reason. Plenty of children of famous actors stay out of the public eye, and nothing I found suggests he has tried to profit from the connection. No interview, no red-carpet appearance I could verify, no public account.
It may simply be a choice, or it may be an upbringing away from his father’s career. That’s my guess, and not something he has said.
Separating Facts From Myths About Liam Costner
Reasonably well-supported: he’s Kevin Costner’s son with Bridget Rooney, he was born in 1996, and a paternity test preceded his father’s confirmation, per Smooth Radio.
Weakly supported or unconfirmed: his exact birth date, his birthplace, his profession, his education and where he lives.
Not supported at all: that he’s an actor or a Yellowstone cast member, that he has a verified social media account, that he’s worth $800 million, and any named girlfriend.
A Timeline of Liam Costner’s Publicly Known Story
1978: Kevin Costner marries Cindy Silva, per Wikipedia.
1994: Costner and Silva divorce, per Wikipedia.
1996: Liam is born to Bridget Rooney, per Wikipedia and Smooth Radio.
Date unknown (reported): A paternity test precedes Costner’s confirmation, per Smooth Radio, which gives no date.
September 25, 2004: Costner marries Christine Baumgartner, per Wikipedia.
2023: Baumgartner files for divorce in May, per Wikipedia.
February 20, 2024: The divorce is finalised, per Wikipedia and Fox News.
April 29, 2025: Smooth Radio publishes its relationship history of Costner.
Why People Keep Searching for Liam Costner
It comes down to Kevin Costner. Every new film, every divorce headline and every family photograph sends a few people looking for the child nobody sees. A private adult with a famous father and no public footprint is exactly the sort of search that content farms love, because there’s demand and nothing on record to contradict whatever gets written.
That’s why the pages sound so alike. They’re answering a question the record can’t answer, and copying the page above is the cheapest way to fill the gap.
Liam Costner in 2026
He’s still a private man, still Kevin Costner’s son with Bridget Rooney and still about to turn 30 or already there. Past those facts, almost everything else, from his job to his bank balance, is unconfirmed or contradicted from one source to the next.
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Frequently Asked Questions About Liam Costner
Who is Liam Costner?
Liam Costner is best known as the son of actor Kevin Costner and Bridget Rooney, born in 1996. He is a private individual with no verified public profile.
Is Liam Costner really Kevin Costner’s son?
Yes. Wikipedia lists a son born in 1996 with Bridget Rooney, and Smooth Radio says Costner confirmed paternity after a test.
How old is Liam Costner?
His exact birth date is not confirmed. He was born in 1996, so he is 29 or 30 in 2026, depending on whether his birthday is in October or November.
How many children does Liam Costner have?
None have been publicly reported. His private life isn’t covered by any reliable source.
What is Liam Costner’s net worth?
There is no reliable, independently verified net-worth figure for Liam Costner. Numbers published online are not backed by disclosed income, assets or financial records.
Liam Costner’s public story is short: a birth in 1996, a paternity test that preceded his father’s confirmation and a life lived largely out of sight. That’s what the record supports, and anything beyond it is somebody’s guess.