Slidell

County:: St. Tammany Parish
County Seat:: No
Area (mi²):: 15.274
State:: Louisiana

Slidell is a city located in St. Tammany Parish, Louisiana. Slidell has a 2025 population of 28,387. Slidell is currently declining at a rate of -0.21% annually and its population has decreased by -1.07% since the most recent census, which recorded a population of 28,694 in 2020.

The average household income in Slidell is $83,948 with a poverty rate of 15.39%. The median age in Slidell is 38.6 years: 38 years for males, and 39.1 years for females.

Demographics

The racial composition of Slidell includes 63.31% White, 20.58% Black or African American, and smaller percentages for other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	18,147	63.31%
Black or African American	5,899	20.58%
Two or more races	2,731	9.53%
Other race	740	2.58%
Asian	588	2.05%
Native American	559	1.95%
Native Hawaiian or Pacific Islander	0	0%

Slidell Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Slidell's average per capita income is $48,191. Household income levels show a median of $66,657. The poverty rate stands at 15.39%.

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	$94,935	-
Families	$80,330	$92,723
Households	$66,657	$83,948
Non Families	$44,756	$59,114

$48,191

Average Income

$66,657

Median Household Income

15.39%

Poverty Rate