LaPlace (/ləˈplɑːs/ 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 tribe’s lands once encompassed the entire Atchafalaya Basin, westward to Lafayette, southward to the Gulf of Mexico and eastward to the New Orleans area.

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.

[4] Karlstein was one of the four settlements collectively known as the "German Coast" (French: la Côte des Allemands), having been populated by German-speaking immigrants since 1721.

[6] Manual Andry built Woodland plantation in 1793 and forced enslaved people to cultivate sugarcane[7] there.

Severe violence was inflicted on the enslaved people, as had been common in Haiti (and had led to a successful slave rebellion there).

[8] A group of 200-500 slaves armed with guns, axes, and cane knives set out from LaPlace to conquer New Orleans and gain freedom for themselves and others.

[10][11] In 1879, pharmacist, planter, and patent medicine purveyor[12] Basile Laplace arrived from New Orleans and established a large plantation in Bonnet Carré.

[4][12] The settlement's railroad depot was named after Laplace, then the post office, and eventually the town itself.

[14] In February 2016 and again in March 2016, several tornadoes touched down in LaPlace, damaging hundreds of buildings and disrupting power.

[19] On his program Feasting on Asphalt, TV chef Alton Brown visited LaPlace to sample its andouille.

[21] Other major employers in the region include Shell Chemical Company, DuPont, ADM Growmark, and ArcelorMittal (formerly Bayou Steel).