Jefferson Parish is in Louisiana, in the Greater New Orleans region. The parish seat is Gretna, located on the Westbank. Locations within Jefferson Parish, like all of the New Orleans metropolitan area, can be conveniently thought of in terms of their relation to the Mississippi River.
Metairie is the largest suburb of New Orleans, Louisiana, located in Jefferson Parish. While much of the city experienced moderate flooding in the aftermath of Hurricane Katrina in 2005, Metairie has rebounded quickly.