Austintown is an unincorporated census-designated place and Youngstown suburb, in Mahoning County, Ohio, United States. The population was 31,627 at the 2000 census. The high school serving the area is Austintown-Fitch HS. Austintown apartments for rent comparison page shows most up to date rent information on Austintown apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.