Jefferson Parish, Louisiana

parish in Louisiana, United States

Jefferson Parish is a parish in the U.S. state of Louisiana. Most of the suburbs of New Orleans are in this parish. Because of this Jefferson parish has the second-most population in the state.

Jefferson Parish
City Hall in Gretna
City Hall in Gretna
Flag of Jefferson Parish
Map of Louisiana highlighting Jefferson Parish
Location within the U.S. state of Louisiana
Map of the United States highlighting Louisiana
Louisiana's location within the U.S.
Coordinates: 29°44′N 90°06′W / 29.73°N 90.1°W / 29.73; -90.1
Country United States
State Louisiana
FoundedFebruary 11, 1825
Named forThomas Jefferson
SeatGretna
Largest communityMetairie
Area
 • Total665 sq mi (1,720 km2)
 • Land296 sq mi (770 km2)
 • Water370 sq mi (1,000 km2)  56%
Population
 (2020)
 • Total440,781
 • Density1,489/sq mi (575/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Area code504,985
Congressional districts1st, 2nd, 6th
Websitewww.jeffparish.net

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