Zac's parents are Walker and Diane Hanson.
Unlike his bandmate brothers, Isaac and Taylor, he is the only one out of the trio who wasn't born in Tulsa, Oklahoma.
Zac has a nephew, Jordan Ezra Hanson, who was born on October 31, 2002, and a niece, Penelope Anne Hanson, who was born on April 19, 2005. Their parents are Taylor Hanson and Natalie Bryant Hanson.
His wife, Kathryn, attended high school with his sister-in-law, Natalie Bryant, who is the wife of Taylor Hanson.
Album "Underneath" debuted at #1 on Billboard's Top Independent Albums chart. The album sold over 37K in its first week making it one of the most successful self-released albums of all time.
Zac is the co-founder and co-CEO of 3CG Records.
Zac was home schooled.
His first child, son John Ira Shepherd Hanson, was born on May 27, 2008, weighing 8 lbs, 4 oz in Tulsa, Oklahoma. His son will go by the name, Shepherd.
Zac married Kathryn Tucker on June 3, 2006.
His nicknames include Animal and ProZac.
Zac is left-handed, like his brother Taylor.
Is good friends with Frankie Muniz.
Zac has six brothers and sisters. Oldest to youngest - Ike, Taylor, Zac, Jessica, Avery, Mackie and Zoë.
Zac's height is 5'11 1/2" (1.82 m).
Sings lead on: Lucy, Man from Milwaukee, Wish That I was There, Misery, Broken Angel and The Walk (unreleased).
Zac: There is not an audience or concert that could ever stand up to the feeling of meeting your baby for the first time.
Zac: People make decisions to go for dreams, to do something difficult, or they decide to be part of the crowd that watches. You have to make those decisions by yourself.
Zac: I think artists are being forced to realize that you have to build a community of fans ... otherwise, you're not even toilet paper. Because toilet paper is a need. You have to wipe your butt; you don't have to go out and buy music to listen to.