Ratings: ‘Young Sheldon’ Scores Biggest Comedy Premiere Audience Since ‘2 Broke Girls’ Debut

“Big Bang Theory” spinoff launched Monday on CBS

“Young Sheldon” is growing up quickly.

The “Big Bang Theory” spinoff premiered on Monday with a 3.7 rating and 17.2 million viewers for CBS, making it the most-watched comedy launch in six years.

It got a big lead-in from “Big Bang,” which kicked off CBS’ Monday comedy lineup at 8 with a 4.1 rating and 17.7 million viewers.

This makes “Sheldon” the most-viewed broadcast comedy debut since “2 Broke Girls” premiered in 2011, and the highest-rated one in the target demo since “The Crazy Ones” in 2013.

“Young Sheldon” stars Iain Armitage, Zoe Perry and Lance Barber in the story of the childhood version of the character played by Jim Parsons on “Big Bang.”

“Sheldon” returns in its regular Thursday slot on Nov. 2.