LaPlace is a census-designated place (CDP) in St. John the Baptist Parish, Louisiana, United States, along the east bank of the Mississippi River in the New Orleans metropolitan area. 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 (40km) west of New Orleans. The nickname is "Andouille Capital of the World" (for the food). LaPlace was settled as a farming village in the 18th century during Louisiana's French colonial era. It was named after early settler Basile LaPlace.