Prairieville is an unincorporated community in Ascension Parish, Louisiana, United States. It is south of Baton Rouge and north of Gonzales, Louisiana. The latitude of is 30.302N. The longitude is -90.971W. Elevation is 23 feet (7.0 m).
Prairieville is an expanding bedroom suburb of Baton Rouge. Its name comes from the once plentiful pastures and prairies that were visible from Highway 73 (Jefferson Hwy.) and U.S. 61 Airline Highway which is now covered with development. Prairieville started off as a quiet community with few people.
In recent decades, Prairieville has benefited from immigration out of Baton Rouge, with new residents particularly drawn to the area by its high-performing public schools and low crime rate. Prairieville has an estimated population of 30,000. If it incorporated it would likely be the largest city in Ascension Parish. Prairieville is in one of the fastest growing areas in Louisiana. Prairieville's estimated population is bigger than Donaldsonville and Gonzales together.