to
Update
is a city in Pike County, Missouri, United States. The population was 3,863 at the 2000 census.
Louisiana is located in northeast Missouri, on the Mississippi River south of Hannibal. An ammonia plant here was converted to study and produce synthetic fuels. Louisiana is home to the Louisiana Winter River Fest.
The area was settled in 1816, incorporated in 1818, and is the oldest town in Pike County . The town is named after Louisiana Basye, who was so named because she was the first child born in St. Louis, Missouri, after the Louisiana Purchase in 1804. Her family moved to Pike County in 1818 when she was 14 years old. The town may have been originally called Louisianaville.