New Carlisle is a city in Clark County, Ohio, United States. The population was 5,785 at the 2010 census. It is part of the Springfield, Ohio Metropolitan Statistical Area.
New Carlisle was originally called Monroe, and under the latter name was laid out in 1810. The present name is a transfer from Carlisle, Pennsylvania, the birthplace of some of the first settlers. A post office called New Carlisle has been in operation since 1828. New Carlisle was incorporated as a village in 1831.
On June 21, 1933, the infamous John Dillinger committed his first bank robbery, taking $10,000 from the New Carlisle National Bank, which occupied the building which still stands at the southeast corner of Main Street and Jefferson Street (state routes 235 and 571) in New Carlisle.
New Carlisle was incorporated as a city in 1973.
New Carlisle is located at 39°56′25″N 84°1′47″W (39.940314, −84.029634).
According to the United States Census Bureau, the city has a total area of 2.76 square miles (7.15 km2), of which, 2.74 square miles (7.10 km2) is land and 0.02 square miles (0.05 km2) is water.
The census-designated place of Park Layne is adjacent to New Carlisle.
As of the census of 2010, there were 5,785 people, 2,214 households, and 1,489 families living in the city. The population density was 2,111.3 inhabitants per square mile (815.2/km2). There were 2,389 housing units at an average density of 871.9 per square mile (336.6/km2).