Young's body was discovered in his home Monday after he fatally shot himself. He was 29.
Hundreds of mourners were expected to attend his funeral Friday afternoon on the lot where his show, "Rizzoli & Isles," is taped, TMZ said.
Production on the series is temporarily suspended while the cast and crew deal with Young's sudden death.
The actor's family has requested donations be made to the Young Storytellers Foundation -- an organization that helps expose underprivileged kids to the arts -- in lieu of sending flowers to the funeral.