Bloomington is a city in and the county seat of Monroe County in the southern region of the U.S. state of Indiana.It is the seventh-largest city in Indiana and the fourth-largest outside the Indianapolis metropolitan area. According to the Monroe County History Center, Bloomington is known as the "Gateway to Scenic Southern Indiana." The city was established in 1818 by a group of settlers from Kentucky, Tennessee, the Carolinas and Virginia who were so impressed with "a haven of blooms" that they called it Bloomington.