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. The population is 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.
LaPlace's nickname is the "Andouille Capital of the World", referring to a variety of sausage.