Sulphur Springs is a town in Jefferson Township, Henry County, Indiana, United States. As of the 2010 census, the town's population was 399. History Sulphur Springs was platted in 1853 when it was certain that the railroad would be extended to that point. The town took its name from nearby mineral springs. Geography Sulphur Springs is located at (40.005340, -85.444701). According to the 2010 census, Sulphur Springs has a total area of , all land. Notable people In 1897, according to Scientific American Magazine, a Sulphur Springs man named William S. Woods invented a new kind of railroad crossing signal. Demographics 2010 census As of the census of 2010, there were 399 people, 151 households, and 108 families living in the town. The population density was . There were 164 housing units at an average density of . The racial makeup of the town was 98.7% White, 0.3% from other races, and 1.0% from two or more races. There were 151 households, of which 37.7% had children under the age of 18 living with them, 58.9% were married couples living together, 9.9% had a female householder with no husband present, 2.6% had a male householder with no wife present, and 28.5% were non-families. 23.2% of all households were made up of individuals, and 12.6% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.02. The median age in the town was 37.9 years. 27.1% of residents were under the age of 18; 7.2% were between the ages of 18 and 24; 24.9% were from 25 to 44; 24.1% were from 45 to 64; and 16.8% were 65 years of age or older. The gender makeup of the town was 49.1% male and 50.9% female. 2000 census As of the census of 2000, there were 346 people, 139 households, and 102 families living in the town. The population density was . There were 147 housing units at an average density of . The racial makeup of the town was 98.84% White, 0.58% Native American (two people), 0.29% Asian (one person), and 0.29% from two or more races (one person). Hispanic or Latino of any race were 0.58% of the population (two people). There were 139 households, out of which 36.0% had children under the age of 18 living with them, 64.7% were married couples living together,