Slidell Flag

Slidell

County Seat:
No
Area (mi²):
15.274
State:
Louisiana

Slidell is a city located in St. Tammany Parish, Louisiana. Slidell has a 2026 population of 28,440. Slidell is currently declining at a rate of -0.11% annually and its population has decreased by -0.66% since the most recent census, which recorded a population of 28,629 in 2020.

28.4K
Total Population
1,862
Density (mi²)
-30 -0.11%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)