These aren't listed in yearly order, but here are the birthdays I could find:
Lily Marks: January 1
Meredith Stepien: January 2
Eric Kahn Gale: January 6
Britney Coleman: January 23
Liam White: January 28
Nick Lang: January 29
Darren Criss: February 5
Joe Walker: February 6
Jim Povolo: February 11
Alle-Faye Monka: March 6
Lauren Lopez: March 8
Nick Strauss-Matathia: April 1
Dylan Saunders: April 8
Ali Gordon: April 15
Carlos Valdes: April 20
Mark Swiderski: April 27
Jeff Blim: May 12
Nico Ager: May 25
Jaime Lyn Beatty: May 28
June Saito: June 30
Brian Rosenthal: July 7
Tyler Brunsman: July 11
Denise Donovan: July...