At a Glance
Louisiana
state, United States
Also known as: Pelican State
Louisiana, constituent state of the United States of America. It is delineated from its neighborsâArkansas to the north, Mississippi to the east, and Texas to the westâby both natural and man-made boundaries. The Gulf of Mexico lies to the south. The total area of Louisiana includes about 4,600 square miles (12,000 square km) of inland waters. The capital is Baton Rouge. Admitted to the union in 1812 as the 18th state, Louisiana commands a once...