The newest addition to their family arrived on July 8, weighing in at 9lb 10oz.
"We are excited to finally announce the arrival of Samuel Scott Dillard," a statement on the family's official website read. "After 40 hours of labor, he was delivered via C-section at the hospital. Thank you for your continued prayers and support!"
Jill and Derick are also parents to a 2-year-old son named Israel. Ahead of Samuel's arrival, the couple told TLC their firstborn was both confused and "excited" about becoming a big brother.