Plainville is a town in Steele Township, Daviess County, Indiana, United States. The population was 476 at the 2010 census. The former high school mascot was the Plainville Midgets. History Plainville was laid out in 1855. It was likely named from the flatness of the land. Geography Plainville is located at (38.805429, -87.151954). According to the 2010 census, Plainville has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 476 people, 194 households, and 132 families residing in the town. The population density was . There were 219 housing units at an average density of . The racial makeup of the town was 97.7% White, 0.4% African American, 1.1% Asian, and 0.8% from two or more races. Hispanic or Latino of any race were 0.4% of the population. There were 194 households, of which 34.5% had children under the age of 18 living with them, 49.5% were married couples living together, 12.9% had a female householder with no husband present, 5.7% had a male householder with no wife present, and 32.0% were non-families. 29.4% of all households were made up of individuals, and 10.8% had someone living alone who was 65 years of age or older. The average household size was 2.41 and the average family size was 2.91. The median age in the town was 39.4 years. 27.3% of residents were under the age of 18; 4.9% were between the ages of 18 and 24; 24% were from 25 to 44; 25.9% were from 45 to 64; and 18.1% were 65 years of age or older. The gender makeup of the town was 50.2% male and 49.8% female. 2000 census As of the census of 2000, there were 513 people, 210 households, and 145 families residing in the town. The population density was . There were 231 housing units at an average density of . The racial makeup of the town was 98.25% White, 0.78% Native American, 0.19% Asian, 0.39% from other races, and 0.39% from two or more races. Hispanic or Latino of any race were 2.34% of the population. There were 210 households, out of which 32.4% had children under the age of 18 living with them, 58.1% were married couples living together, 8.6% had a female householder with no husband present, and 30.5% were non-families. 28.1% of all households were made up of individuals, and 18.1% had