The Shelbyville post office has been in operation since 1823. Shelbyville was named in honor of Isaac Shelby, the first and fifth Governor of Kentucky and soldier in Lord Dunmore's War, the Revolutionary War, and the War of 1812. Whetzel's Trace was cut just 4 miles north of site of Shelbyville and proved important in the settlement of Shelby County. This trail became known as Whetzel's Trace and was the first east–west road into the New Purchase of central Indiana. Also in 1818, the backwoodsman Jacob Whetzel and a party cut a trail through this ' New Purchase' from the Whitewater River at Laurel due west to the White River at Waverly. In 1818, the land that would become Shelbyville was ceded to the United States by the Miami tribe in the Treaty of St. History Shelbyville Commercial Historic District dating back to 1886 John Hamilton House built 1853 The population was 20,067 as of the 2020 census. Shelbyville is a city in Addison Township, Shelby County, in the U.S.
