Harvey is a census-designated place (CDP) in Jefferson Parish, Louisiana, United States.

Harvey is on the south side (referred to as the "West Bank") of the Mississippi River, within the New Orleans–Metairie–Kenner metropolitan statistical area.

He used his slaves to dig the ditch that would become the Harvey Canal, cutting south from the banks of the Mississippi River to the back of Bayou Barataria, to provide better access.

Years later, d'Estrehan paid German settlers in the area to work on widening the ditch; they used wooden shovels.

D'Estrehan built his home where the ditch met the river banks, naming the settlement "Cosmopolite City".

Harvey's wife, née Louise Destrehan, was a great-granddaughter of Jean Baptiste d'Estrehan.

It is bordered to the east by Gretna, to the west by Marrero, to the southwest by Woodmere, and to the north, across the Mississippi, by New Orleans.

The closest highway crossing of the river is the Crescent City Connection 4 miles (6 km) northeast of Harvey.

[14] From 2010 to 2020, the population and diversification of the CDP has reflected state and nationwide demographic trends of African American, Asian, and Hispanic and Latino growth.

[23][34] The 35,000-square-foot (3,300 m2) facility opened in 1990 and is the largest public library in the West Bank of Jefferson Parish.