Slidell, Louisiana

Slidell
Heritage Park
Nicknames: 
The Camellia City (official), The Dell, The Dirty Dell (Owing to graffiti above I-12 East before the city limits)
Location of Slidell in St. Tammany Parish, Louisiana
Slidell
Location of Slidell in Louisiana
Coordinates: 30°16′45″N 89°46′40″W / 30.27917°N 89.77778°W / 30.27917; -89.77778
Country United States
State Louisiana
ParishSt. Tammany
Named afterJohn Slidell
Government
 • MayorRandy Fandal (R)
Area
 • Total
15.38 sq mi (39.83 km2)
 • Land15.04 sq mi (38.96 km2)
 • Water0.34 sq mi (0.87 km2)
Population
 (2020)
 • Total
28,781
 • Density1,913.5/sq mi (738.82/km2)
Time zoneUTC−6 (CST)
 • Summer (DST)UTC−5 (CDT)
ZIP Codes
70458–70461, 70469
Area code(s)985
FIPS code22-70805
Websitemyslidell.com

Slidell /slˈdɛl/ is a city on the northeast shore of Lake Pontchartrain in St. Tammany Parish, Louisiana, United States. The population was 28,781 at the 2020 census, making it the sixteenth-most populous city in Louisiana. It is part of the New OrleansMetairieKenner metropolitan statistical area.