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.
Austin is located at 38°44′32.50″N 85°48′16.50″W / 38.742361°N 85.804583°W / 38.742361; -85.804583 (38.742361°,-85.804583°).
According to the United States Census Bureau, the city has a total area of 2.4 square miles (6.3 km²), all of it land.