Lenoir is a city in and the county seat of Caldwell County, North Carolina, United States. The population was 18,263 at the 2020 census. Lenoir is located in the foothills of the Blue Ridge Mountains. To the northeast are the Brushy Mountains, a spur of the Blue Ridge Mountains. Hibriten Mountain, located just east of the city limits, marks the western end of the Brushy Mountains range.