The University of North Alabama (abbreviated UNA) is a coeducational university located in Florence, Alabama, and the state's oldest four-year public university. Occupying a 130-acre (0.5 km) campus in a residential section of Florence, UNA is located within a four-city area that also includes Tuscumbia, Sheffield and Muscle Shoals. The four cities comprise a metropolitan area with a combined population of 140,000 people. The University of North Alabama, which celebrated its 175th anniversary in 2005, has undergone numerous sweeping changes in the course of its long history. Originally founded as LaGrange College in 1830, it was reestablished in 1872 as the first state-supported teachers college south of the Ohio River. A year later, it became one of the nation's first coeducational colleges.