The bass player recently joked that he felt left out of baby discussions with bandmates Gary LeVox and Joe Don Rooney, both fathers. But he won't be excluded any more.
A news release says the child is due in January. The couple was married in 2004.
DeMarcus says he's confident his wife, a former Miss Tennessee and CMT personality, will be a great mother "because she has done an incredible job raising me over the past six years."
DeMarcus' band is on the road this summer and plans to release an album in September.
