Austin is a city in Jennings Township, Scott County, Indiana, United States. The population was 4,295 at the 2010 census. Austin became Indiana's newest city on January 1, 2008. As of the census of 2000, there were 4,724 people, 1,793 households, and 1,308 families residing in the town. The population density was 1,946.4 people per square mile (750.6/km²). There were 1,967 housing units at an average density of 810.5 per square mile (312.5/km²). The racial makeup of the town was 98.20% White, 0.06% African American, 0.15% Native American, 0.19% Asian, 0.78% from other races, and 0.61% from two or more races. Hispanic or Latino of any race were 1.52% of the population.