Jefferson, Louisiana

Jefferson, Louisiana Old Jefferson
Census-designated place
Old Jefferson welcome sign at the boundary with the City of New Orleans
Jefferson, Louisiana Location of Jefferson in Louisiana
Coordinates: 29°57′51″N 90°09′26″W / 29.96417°N 90.15722°W / 29.96417; -90.15722
Country	United States
State	Louisiana
Parish	Jefferson
Area [1]
• Total	3.27 sq mi (8.48 km2)
• Land	2.71 sq mi (7.01 km2)
• Water	0.57 sq mi (1.47 km2)
Elevation	3 ft (0.9 m)
Population  (2020)
• Total	10,633
• Density	3,927.96/sq mi (1,516.44/km2)
Time zone	UTC-6 (CST)
• Summer (DST)	UTC-5 (CDT)
ZIP Code	70121
Area code	504
FIPS code	22-38145
GNIS code	2402632[2]

Jefferson is a census-designated place (CDP) in Jefferson Parish, Louisiana, United States, on the north side (referred to as the "East Bank") of the Mississippi River. Jefferson is part of the New Orleans–Metairie–Kenner metropolitan statistical area. The population was 11,193 at the 2010 census,^[3] and 10,533 in 2020.^[4][5] It is often known by locals as "Old Jefferson" (to distinguish itself from the rest of Jefferson Parish), but should not be confused with Old Jefferson in East Baton Rouge Parish, Louisiana.