Louisville is the most populous city in the U.S. state of Kentucky. It ranks as the sixth-most populous city in the Southeast region and the 27th-most populous city in the United States.
The city serves as the historical county seat and has been the nominal seat of Jefferson County since 2003, located on the Indiana state line. By land area, Louisville is the 24th-largest city in the country, though it ranks as the 265th most dense city by population density.