Adalynn Rose was born at 11:06 a.m., weighing 6 pounds, 5 ounces. Noah James followed at 11:25, weighing 5 pounds, 5 ounces. The babies were carried to term via a surrogate.
"Our family is overwhelmed with joy by these two precious gifts from God," Daughtry wrote. "The babies are both healthy and resting. Thanks to everyone for their love and prayers."
The 30-year-old former American Idol contestant already has a 12-year-old adopted son, Griffin, and a 14-year-old stepdaughter, Hannah, from his wife's previous marriage. Chris and Deanna have been married since 2000.
Daughtry and his rock band of the same name just wrapped a European tour last month.