Rochester is a city in the U.S. State of Minnesota and is the county seat of Olmsted County. Located on the Zumbro River's south fork, the city has a population of 106,769 according to the 2010 United States Census. The U.S. Census Bureau estimated that the 2015 population was 112,225. It is Minnesota's third-largest city and the largest city located outside of the Minneapolis-St. Paul-Bloomington Metropolitan Statistical Area. As of 2015, the Rochester metropolitan area has a population of 213,873. It is the home of Mayo Clinic and one of IBM's largest facilities.
Rochester was founded in 1854, and platted in 1855. Rochester developed as a stagecoach stop between Saint Paul, Minnesota, and Dubuque, Iowa. When the railroad arrived in the 1860s, it brought new residents and business opportunities. In 1863, Dr. William W. Mayo arrived as the examining surgeon for draftees in the Civil War. The community was named after Rochester, New York.
On August 21, 1883, the Great Tornado demolished much of Rochester, leaving 37 dead and about 200 injured. As there was no medical facility at the time, Mayo and his two sons worked together to care for the wounded. Donations of $60,000 were collected and the Sisters of St. Francis, assisted by Mayo, opened a new facility named St. Marys Hospital in 1889. The Mayo practice grew and is today among the largest and most well-respected medical facilities in the world. Many famous people from around the world, including former Presidents Franklin D. Roosevelt, Harry S. Truman, George H. W. Bush, Gerald Ford, and Ronald Reagan, have visited Rochester as patients of the Mayo Clinic. Rochester has also been hit by two F4 tornadoes since 1950 (the first on May 10, 1953 and the other on September 16, 1962.) Rochester celebrated its sesquicentennial in 2004.
Rochester lies alongside the South Fork of the Zumbro River. According to the United States Census Bureau, the city has a total area of 54.75 square miles (141.80km2), of which 54.59 square miles (141.39km2) of it is land and 0.16 square miles (0.41km2) is water. The city is located 85 miles (137km) southeast of Minneapolis-St. Paul.
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