Baden-Württemberg is one of the 16 states of Germany. Baden-Württemberg is in the southwestern part of the country to the east of the Upper Rhine—but one which has some of its major cities straddling the banks of the Neckar River (Tübingen, Stuttgart, Heilbronn, Heidelberg, and Mannheim). It is third largest in both area and population among the country's sixteen states, with an area of 35,742 square kilometers (13,800.1 sq mi) and 10.7 million inhabitants (both almost equivalent to all of Belgium). The state capital is Stuttgart.