Leesburg is a town in Plain Township, Kosciusko County, in the U.S. state of Indiana.

Leesburg, named for Levi Lee,[4] was established in August 1833.

It was the county seat until November 1854, when the Pennsylvania Railroad reached Warsaw.

According to the 2010 census, Leesburg has a total area of 0.26 square miles (0.67 km2), all land.

There were 239 housing units at an average density of 919.2 per square mile (354.9/km2).

24.8% of all households were made up of individuals, and 8.4% had someone living alone who was 65 years of age or older.

20.7% of all households were made up of individuals, and 7.8% had someone living alone who was 65 years of age or older.