Jim Geoghan, a writer and producer best known for co-creating the popular Disney Channel series The Suite Life of Zack & Cody, has died at the age of 79. Geoghan passed away in Los Angeles on Sunday, September 6, after a battle with dementia, his daughter Genevieve confirmed to TMZ on Tuesday.

The Suite Life of Zack & Cody aired for 87 episodes on the Disney Channel between 2005 and 2008. The series, which Geoghan developed with Danny Kallis, starred Dylan and Cole Sprouse, Brenda Song, and Ashley Tisdale. It garnered three Primetime Emmy nominations, including Outstanding Children's Program in 2008 and 2007, and Outstanding Choreography in 2006.

A follow-up series, The Suite Life on Deck, ran for 71 episodes from 2008 to 2011, and Geoghan also penned the 2011 film The Suite Life Movie.

Geoghan had a long career in television writing, working on shows such as Family Matters from 1991 to 1998 as a writer, producer, and co-executive producer. His other writing credits include contributions to 1980s series like Kate & Allie, Silver Spoons, The Facts of Life, Mama's Family, and It's Garry Shandling's Show.

Beyond his television work, Geoghan was also a playwright. His play Only Kidding ran for 500 performances off-Broadway, and Light Sensitive debuted at San Diego's Old Globe Theater, enjoying over 40 productions. Earlier in his career, he was part of the New York comedy troupe Divided We Stand, performing on college campuses and in clubs, and opening for acts like The Beach Boys and The Temptations.

The Suite Life of Zack & Cody co-creator Jim Geoghan has died at the age of 79 following a battle with dementia, according to his family

Geoghan later moved to Los Angeles for television writing opportunities. He is remembered for his joyful personality, kindness, and humor. His hobbies included photography and crafting model boats and planes.

News of Geoghan's death was met with warm tributes on social media. Users recalled his contributions to television comedy, noting the blend of humor and moral lessons in The Suite Life of Zack & Cody. One user commented on his extensive experience, stating, "people forget he spent 30 years mastering multi-camera comedy from 1970s NYC stand-up to writing on Family Matters before ever pitching Disney Channel."

Geoghan is survived by his wife, Annie Gagen, and his daughter, Genevieve.