The TV show The O.C. aired for the first time in 2003. It ran for four seasons, but was axed in 2007 due to bad viewer ratings.
Rachel Bilson first appeared on TV screens in Buffy the Vampire Slayer. She became an international star the same year, playing "Summer Roberts" in The O.C.
Rachel starred in the series Heart of Dixie as "Dr. Zoe Hart" from 2011 to 2015. She was in a relationship with fellow actor Hayden Christensen from 2007 until 2017 and the two have a daughter, Briar Rose Christensen.
Mischa Barton played "Marissa Cooper" from 2003 to 2006. By the time she first appeared in The O.C. she was already a seasoned actress, having gained her first acting experience on stage at just nine in New York City's Lincoln Center.
After leaving the series Mischa Barton appeared in various TV series and independent films. She also appeared on stage in the theatre production of the film Steel Magnolias in 2012. Mischa starred in American Beach House in 2015 and secured an impressive second place in the dance competition TV series Dancing with the Stars in 2016.
Peter Gallagher played "Sandy Cohen" from 2003 to 2007. He was a well-known actor before appearing on the show, having found fame in the eighties starring in various films and on Broadway.
After The O.C. Peter Gallagher starred in numerous films and TV series such as Californication and How I Met Your Mother. He also released an album called "7 Days in Memphis" in 2005. He has had a recurring role in Law & Order: New York since 2014, too. In 2017 he starred in Bad Moms 2 for instance as well.
Kelly Rowan played "Kirsten Cohen". The Canadian beauty started her career as a model.
Rowan had guest appearances in various different TV series after The O.C. and had a starring role in the US crime series Perception from 2012 to 2015. The stunning fifty-two-year-old also appeared in the 2016 TV film Tulips for the Rose.
Adam Brody captured the hearts of girls everywhere as "Seth Cohen". He had already appeared in various TV series before The O.C. including Gilmore Girls.
After The O.C. Brody starred in a number of films such as Mr. and Mrs. Smith and Jennifer's Body. He has been married to Gossip Girl star Leighton Meester since 2014. The couple had a daughter in 2015. Adam Brody now stars in the Amazon show Startup.
Willa Holland played "Marissa's" little sister "Kaitlin Cooper". She was used to being in the spotlight having modeled for big-name brands such as Burberry as young as seven.
After The O.C. Willa had frequent guest appearances in Gossip Girl and acted in a number of films. She has starred in the TV series Arrow since 2012.
Tate Donovan played "Marissa's" father "Jimmy Cooper" from 2003 to 2007. He became famous in the nineties, appearing in Friends several times and was even engaged to Jennifer Aniston for a while.
After The O.C. Donovan starred in several films such as Argo and numerous TV series including Deception and 24. The actor has had a recurring role in the award-winning, dystopian TV series The Man in the Highcastle since 2016.
Alan Dale played "Caleb Nichol" in The O.C. from 2003 to 2005. The former rugby player started his professional acting career at the age of 27.
Since leaving The O.C., Dale has had guest appearances on various television shows such as Lost and Ugly Betty. The dashing New-Zealander has starred in numerous films including The Girl with the Dragon Tattoo and Captain America: The Winter Soldier.
Benjamin McKenzie found worldwide fame as "Ryan Atwood" in The O.C.
After The O.C., McKenzie had a leading role in the series Southland. He has starred as detective "James Gordon" in the crime series Gotham since 2014. He married co-star Morena Baccarin in early 2017 and the couple have a daughter.
Melinda Clarke played "Marissa's" mother "Julie Cooper". She became famous at the end of the eighties as "Faith Taylor" in the drama Days of Our Lives.
Gorgeous Melinda Clarke went on to appear in a number of series after The O.C. including The Vampire Diaries and Gotham. She starred as "Amanda" in the action-thriller TV series Nikita from 2010 to 2013.
Autumn Reeser played "Taylor Townsend" in The O.C. from 2005 to 2007. She had her first television appearance in 2001 in the series Star Trek: Voyager.
After The O.C. finished Autumn appeared in various TV series including Hawaii Five-O, Entourage and No Ordinary Family. The actress was married to director Jesse Warren for five years between 2009 and 2014 and they have two sons.