Caldwell County is a county in the U.S. state of North Carolina. It is located in the foothills of the Blue Ridge Mountains. As of the 2020 census, the population was 80,652. Its county seat is Lenoir. Caldwell County is part of the Hickory–Lenoir–Morganton, NC Metropolitan Statistical Area.
The county was formed in 1841 from parts of Burke County and Wilkes County. It was named for Joseph Caldwell, presiding professor and the first president of the University of North Carolina at Chapel Hill.
A series of reductions to the county's territory have taken place since its initial formation. In 1847, parts of Caldwell County, Iredell County, and Wilkes County were combined to form Alexander County. In 1849, parts of Caldwell County, Ashe County, Wilkes County, and Yancey County were combined to form Watauga County. In 1861, parts of Caldwell County, Burke County, McDowell County, Watauga County, and Yancey County were combined to form Mitchell County. Finally, in 1911 parts of Caldwell County, Mitchell County, and Watauga County were combined to form Avery County.