Was laid out by Peter Klein in 1765, making it the oldest town in what is now Adams County,Pennsylvania.Peter Klein or Little (1724-1773). After holding a number of Germany Township offices in the 1750s and being elected to a three-year term as a county assessor in 1758, he purchased a 311-acre tract of land in Germany Township for which the Penns awarded him a patent deed in 1760. Located along the Monocacy Road, Peter was in a good position to establish a town.Littlestown was known as "Kleina Stedtle" (in English "Little's Town"). The name was changed later to Petersburg; however , confusion due to another neighboring town with the same name, led the name to be changed to Littlestown in 1795. It was incorporated as a Borough by the Court of Adams County February 23, 1864. Littlestown's nickname arose from fact that the community was a hub of industrial activity in an area.