Columbus, IN. Online Offers. Columbus ( /kÉlÊmbÉs/) is a city in and the county seat of Bartholomew County, Indiana, United States. The population was 44,061 at the 2010 census, and the current mayor is Fred Armstrong.
In 1951, the U.S. Army Corps of Engineers began construction of the New Orleans Mississippi River Floodwall under the Dumaine Street Wharf. Between 1973 and 1992, 15 major sections were built at a cost of $30 million.
Ohio River flood of 1937. The Ohio River flood of 1937 took place in late January and February 1937. With damage stretching from Pittsburgh to Cairo, Illinois, one million people were left homeless, with 385 dead and property losses reaching $500 million ($8.7 billion in 2015 dollars).