Hardinsburg is a town in Posey Township, Washington County, in the U.S. state of Indiana. The population was 248 at the 2010 census. History Hardinsburg was laid out in 1838 by Aaron Hardin, and named for him. Aaron Hardin operated the first store in Hardinsburg and had kept store for several years before the town was started. Hardinsburg was incorporated as a town in 1849. The Hardinsburg post office has been in operation since 1838. Geography Hardinsburg is located at . According to the 2010 census, Hardinsburg has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 248 people, 96 households, and 61 families living in the town. The population density was . There were 111 housing units at an average density of . The racial makeup of the town was 100.0% White. Hispanic or Latino of any race were 0.4% of the population. There were 96 households, of which 35.4% had children under the age of 18 living with them, 49.0% were married couples living together, 8.3% had a female householder with no husband present, 6.3% had a male householder with no wife present, and 36.5% were non-families. 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. The average household size was 2.58 and the average family size was 3.26. The median age in the town was 37 years. 26.6% of residents were under the age of 18; 9% were between the ages of 18 and 24; 25.1% were from 25 to 44; 28.3% were from 45 to 64; and 11.3% were 65 years of age or older. The gender makeup of the town was 50.0% male and 50.0% female. 2000 census As of the census of 2000, there were 244 people, 99 households, and 66 families living in the town. The population density was . There were 105 housing units at an average density of . The racial makeup of the town was 99.18% White, 0.82% from other races. Hispanic or Latino of any race were 4.10% of the population. There were 99 households, out of which 38.4% had children under the age of 18 living with them, 45.5% were married couples living together, 15.2% had a female householder with no husband present, and 33.3% were non-families. 32.3% of all households were made up of