Louisiana Louisiana Louisiana (, ) is a state in the Deep South region of the southeastern United States. It is the 31st most extensive and the 25th most populous of the 50 United States. Louisiana is bordered by Arkansas to the north, Mississippi to the east, the Gulf of Mexico to the south, and the state of Texas to the west. A large part of its eastern boundary is demarcated by the Mississippi River. Louisiana is the only U.S. state with political subdivisions termed parishes, which are equivalent to counties. The state's capital is Baton Rouge, and its largest city is
Louisiana State University and LSU Health Sciences Center Shreveport. The University of New Orleans was a member of Louisiana State University from 1958 until 1963 as LSUNO and under its own name 1963 until 2011 when it was transferred to the University of Louisiana System by the Louisiana Legislature. In addition, LSU owns and operates the J. Bennett Johnston, Sr. Center for Advanced Microstructures and Devices (CAMD), which is a 1.3 GeV synchrotron radiation facility. Louisiana State University is ranked 140th in the "national universities" category and 70th among public universities by the 2019 U.S. News & World Report ranking of U.S. colleges.