Osage is located in Mitchell County. About 3,627 people live here (as of 2020). Between 2010 and 2020, the population grew from 3,619 to 3,627. The region is at 360 meters above sea level. The area covers about 5.9 square kilometers. There are about 108 streets in Osage. The postal codes are 50461. The dialing code is 641. Osage is city in Mitchell County, Iowa, United States. Among other things, Osage has restaurants, cafés, schools, banks, hairdressers and doctors. More information at
www.osageia.govoffice3.com.