Williamsport is a town in Washington Township

Washington Township, Warren County, Indiana

Washington Township is one of twelve townships in Warren County, Indiana, USA. It is the most populous township in the county; its population is 2,351 according to the 2000 census, with 1,935 of those living in Williamsport...

, Warren County

Warren County, Indiana

Warren County lies in western Indiana between the Illinois border and the Wabash River in the United States. Before the arrival of non-indigenous settlers in the early 19th century, the area was inhabited by several Native American tribes. The county was officially established in 1827 and...

, Indiana

Indiana

Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. The population was 1,898 at the 2010 census. It is the county seat

County seat

A county seat is an administrative center, or seat of government, for a county or civil parish. The term is primarily used in the United States....

 of Warren County and is the largest of the four incorporated towns in the county. Williamsport Falls

Williamsport Falls

Williamsport Falls is a waterfall near the center of the town of Williamsport where Fall Creek flows over a sandstone ledge, in Warren County, Indiana. With a height of , it is the highest free-falling waterfall in the state of Indiana....

, the highest waterfall in the state, is located in downtown Williamsport.
Williamsport was plat

Plat

A plat in the U.S. is a map, drawn to scale, showing the divisions of a piece of land. Other English-speaking countries generally call such documents a cadastral map or plan....

ted by (and named for) William Harrison on December 11, 1828, on the south end of the eastern fractional part of the northeast quarter of section 11, township 21, range 8.