Markleville is a town in Adams Township, Madison County, Indiana, United States. It is part of the Anderson, Indiana Metropolitan Statistical Area. The population was 528 at the 2010 census. Geography Markleville is located at (39.979501, -85.617273). According to the 2010 census, Markleville has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 528 people, 196 households, and 142 families living in the town. The population density was . There were 210 housing units at an average density of . The racial makeup of the town was 97.9% White, 0.2% African-American, 0.2% Asian, 0.6% from other races, and 1.1% from two or more races. Hispanic or Latino of any race were 0.9% of the population. There were 196 households, of which 38.8% had children under the age of 18 living with them. 58.2% were married couples living together.10.7% had a female householder with no husband present, 3.6% had a male householder with no wife present, and 27.6% were non-families. 22.4% of all households were made up of individuals, and 10.7% had someone living alone who was 65 years of age or older. The average household size was 2.69 and the average family size was 3.15. The median age in the town was 35.7 years. 28.6% of residents were under the age of 18; 5.1% were between the ages of 18 and 24; 30.3% were from 25 to 44; 23% were from 45 to 64; and 13.1% were 65 years of age or older. The gender makeup of the town was 48.9% male and 51.1% female. 2000 census As of the census of 2000, there were 383 people, 141 households, and 111 families living in the town. The population density was . There were 149 housing units at an average density of . The racial makeup of the town was 99.74% White, and 0.26% from two or more races. There were 141 households, out of which 31.2% had children under the age of 18 living with them, 67.4% were married couples living together, 8.5% had a female householder with no husband present, and 20.6% were non-families. 16.3% of all households were made up of individuals, and 9.2% had someone living alone who was 65 years of age or older. The average household size was 2.72 and the average family size was 3.02. In the town, the population was spread out, with 24.5%