Hardinsburg is a town in Posey Township, Washington County, in the U.S. state of Indiana.

[7] According to the 2010 census, Hardinsburg has a total area of 2.03 square miles (5.26 km2), all land.

[8] As of the census[10] of 2010, there were 248 people, 96 households, and 61 families living in the town.

30.2% of all households were made up of individuals, and 8.4% had someone living alone who was 65 years of age or older.

32.3% of all households were made up of individuals, and 17.2% had someone living alone who was 65 years of age or older.

About 5.6% of families and 13.9% of the population were below the poverty line, including 21.7% of those under the age of eighteen and 20.0% of those 65 or over.