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 28,345. Slidell is currently declining at a rate of -0.17% annually and its population has decreased by -0.99% since the most recent census, which recorded a population of 28,629 in 2020.

The median household income in Slidell is $70,497 with a poverty rate of 15.69%. The median age in Slidell is 38.9 years: 37.6 years for males, and 39.8 years for females. For every 100 females there are 92.7 males.

28.3K
Total Population
1,856
Density (mi²)
-47 -0.17%
Growth

Slidell Population

Slidell Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202628,345-47-0.17%
202528,392-48-0.17%
202428,440-30-0.11%
202328,470-131-0.46%
202228,601-136-0.47%
202128,737490.17%
202028,6298713.14%
201927,758-108-0.39%
201827,866-111-0.4%
201727,977-5-0.02%
201627,982560.2%
201527,9262360.85%
201427,690840.3%
201327,606990.36%
201227,507310.11%
201127,4761340.49%
201027,3422741.01%
200025,6951,5716.51%
199024,124-2,594-9.71%
198026,71810,61765.94%
197016,1019,745153.32%
19606,3562,89283.49%
19503,46460020.95%
19402,864572.03%
19302,807-151-5.1%
19202,95800%

Median Age

Overall: 38.9 years
Female: 39.8 years
Male: 37.6 years

Slidell Adults

There are 21,782 adults, (6,098 of whom are seniors) in Slidell.

Sex Ratio

Female: 14,823 (51.9%)
Male: 13,738 (48.1%)

Demographics

The racial composition of Slidell includes 62.63% White, 20.32% Black or African American, and smaller percentages for other race, Asian, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White17,88762.63%
Black or African American5,80420.32%
Two or more races3,14010.99%
Other race7202.52%
Asian5892.06%
Native American4211.47%
Race
Population ↓
Percentage (of total)
Two or more races1,2244.29%
Other race6242.18%
Native American3901.37%
White3521.23%
Black or African American2100.74%
Race
Population ↓
Percentage (of total)
White17,53561.39%
Black or African American5,59419.59%
Two or more races1,9166.71%
Asian5892.06%
Other race960.34%
Native American310.11%

Slidell Marital Status

Economics and Income Statistics

Slidell 's average per capita income is $47,597. Household income levels show a median of $70,497. The poverty rate stands at 15.69%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$95,077-
Families$74,989$96,897
Households$70,497$86,034
Non Families$41,949$57,535

$47,597

Average Income

$70,497

Median Household Income

15.69%

Poverty Rate

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)