|Elevation||23 ft (7 m)|
|Area||57.2 km2 (22.1 sq mi)|
|- land||57.0 km2 (22 sq mi)|
|- water||0.2 km2 (0.08 sq mi), 0.35%|
|Density||472.1 / km2 (1,222.7 / sq mi)|
|- summer (DST)||CDT (UTC-5)|
Prairieville is an unincorporated community and census-designated place in Ascension Parish, Louisiana, United States. It is south of Baton Rouge and north of Gonzales. The latitude is 30.302N, and the longitude is -90.971W. The 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 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 had an official 2010 census population of 26,895 inhabitants. If it incorporated it would be the largest city in Ascension Parish. Prairieville is in one of the fastest-growing areas in Louisiana. Prairieville's population is bigger than the parish's two largest incorporated cities, Donaldsonville (7,436) and Gonzales (9,781) combined.
Prairieville is vulnerable to hurricanes and tropical systems due to its proximity to the coast of southeast Louisiana. Hurricane Gustav caused major damage to the Prairieville area; many trees and power lines were down for weeks.
The most notable local property was the Phillips Farm. The farmhouse is still a local landmark in Prairieville, although the original owner died in 2005. The house is lined with live oaks and a white planked fence surrounds the grounds. The pasture was sold in 1992 at the start of the suburban development and a 250-resident subdivision named "Seven Oaks" surrounds the farm where the pastures were.
In 2006, the farmhouse was sold at auction following the death of Dr. Carey A. Phillips. The 40-acre (160,000 m2) tract of land (including the house) has been made into a cemetery now called Oak Lane Memorial Park.
- State Representative Eddie J. Lambert and his wife, Judge Marilyn Montgomery Lambert, reside in Prairieville.
- Sidney McCrory, Louisiana Commissioner of Agriculture and Forestry from 1956 to 1960 and a native of Ascension Parish, is interred at Prairieville Cemetery.
- Former LSU football star and current New York Giants football player Corey Webster has a home in Prairieville.
- "Geographic Identifiers: 2010 Demographic Profile Data (G001): Prairieville CDP, Louisiana". U.S. Census Bureau, American Factfinder. Retrieved May 15, 2013.
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