Jefferson Parish, Louisiana

Jefferson Parish
City Hall in Gretna
Location within the U.S. state of 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

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.

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