Odell was in the 2011 film "Judy Moody and the Not Bummer Summer" and had a recurring role in the ABC sitcom "The Goldbergs" as Ari Caldwell.
The young actor was found unresponsive at the facility in the San Fernando Valley and there were no immediate signs of foul play.
Aside from his role on The Goldbergs, O'Dell also has guest roles on iCarly, Modern Family and Arrested Development. Although no cause of death has yet been announced, it's still been tough to hear for a lot of people.
How to have tough conversations about mental health
If you or someone you love needs help, the National Suicide Prevention hotline is 1-800-273-TALK (8255) or text "talk" to 741741. He said the best thing to do if you think someone you know is suicidal is have a conversation with them about how they are doing.
"The Odell family has lost our beloved son and brother, Jackson Odell, on Friday", it read.
Odell was also a singer-songwriter and wrote the soundtrack for the 2018 film Forever My Girl. "He had so much more to share".
He was known for sharing videos of himself singing covers of popular artists' songs on YouTube over the years.