Nicholsville was originally called Feetown, and under the latter name was platted in 1842, and named for Daniel Fee, who kept the first store there. The town site was replatted in 1847, and the name was changed to Nicholsville, after Nathan B. Nichols, the store's new proprietor. A post office called Nicholsville was established in 1846, and remained in operation until 1906.
- Raymond H. Burke, Ohio congressman
- U.S. Geological Survey Geographic Names Information System: Nicholsville, Ohio
- Everts, Louis H. (1880). History of Clermont County, Ohio, with Illustrations and Biographical Sketches of Its Prominent Men and Pioneers. Philadelphia: J.B. Lippincott & Co. p. 389.
- "Clermont County". Jim Forte Postal History. Retrieved 16 January 2016.