LaPlace ( lə-PLAHSS) is a census-designated place (CDP) in St. John the Baptist Parish, Louisiana, United States, situated along the east bank of the Mississippi River, in the New Orleans metropolitan area. The population was 32,134 at the 2010 census.
LaPlace is the southern terminus of Interstate 55, where it joins with Interstate 10, and of US 51, where it terminates at the junction with US 61. LaPlace is located 25 miles (40 km) west of New Orleans.
The Chitimacha lived in the region prior to the arrival of European colonists. The tribe’s lands once encompassed the entire Atchafalaya Basin, westward to Lafayette, Louisiana, southward to the Gulf of Mexico and eastward to the New Orleans area. The Chitimacha Tribe currently resides on a reservation in St. Mary Parish, Louisiana.
Present-day LaPlace was settled by German immigrants in the early 18th century during Louisiana's French colonial period, as part of a larger settlement on the bank of the Mississippi called Karlstein.