The 27-year-old television personality's rep confirmed Monday to People that Jeremy's wife, Audrey Roloff, gave birth to daughter Ember Jean on Sunday.
Jeremy and Audrey, who married in 2014, had announced Audrey's pregnancy in February.
The couple said in an interview with Us Weekly that meeting their baby girl was an exciting and happy moment.
"Labor is such a wild and miraculous process and meeting our baby girl for the first time filled us with uncontainable joy," the pair told the magazine. "We are so thankful for this little life we've been blessed with and cannot wait to see all that she becomes."
"We are excited for the journey of parenthood that lies ahead," they added. "Welcome to our family Ember, may you be a glowing, fierce and radiant light in this world."
Jeremy's dad, Matt Roloff, was among those to react to the happy news online.
"Oh my goodness. All is right in the world!! :))). Love love," the reality star wrote Monday on Facebook.
Jeremy is the son of Matt and Amy Roloff, who split in 2015 after 27 years of marriage.
He is the twin brother of Zachary Roloff, who welcomed son Jackson with wife Tori in May, and an elder brother to Jacob and Molly Roloff.
"Little People, Big World" documents the day-to-day life of Jeremy and his family in Oregon. Matt, Amy and Zachary are diagnosed with dwarfism, while Jeremy, Jacob and Molly are of average height.
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