With 272,421 people, Slidell is a metro area. Few US metro areas rank higher on income. Growth has run 42% since 2000, or 81,153 more people. Owners hold 79% of the housing stock. 4% of residents were born outside the United States. The typical home is worth $284,000, having more than doubled since 2000.
At a glance
Average income
median household income $81,202, near the US median
US median: $82,259
Mid-age
median age 40.5
US median: 38.9
Average education
38% hold a bachelor's degree
US average: 36%
Less affordable
home values up 34%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Slidell
What changed most since 1990
Population144,508 → 272,421(+89%)US over the same years: +35%
Among the 18 metro and micro areas based in Louisiana
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)28%(4,326)
US avg: 26.4%
Gulf War (1990s)31%(4,796)
US avg: 24.3%
Vietnam era33.8%(5,229)
US avg: 33.1%
Korean War3.9%(605)
US avg: 4.5%
World War II0.3%(43)
US avg: 1%
Share of the 15,461 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Slidell, decade by decade
Slidell population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
144,508
$73,577
$181,205
23.1%
31.5
2000
191,268
$87,226
$211,312
28.3%
32.8
2010
233,740
$87,560
$290,304
30.1%
41.9
2020
264,570
$85,728
$270,648
34.3%
56.1
2024
272,421
$81,202
$284,000
37.7%
56.4
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
How many people live in Slidell-Mandeville-Covington, LA?
Slidell-Mandeville-Covington, LA has about 272,421 residents according to the 2024 American Community Survey.
What is the median household income in Slidell-Mandeville-Covington, LA?
The typical household in Slidell-Mandeville-Covington, LA earns about $81,202 a year. Half of households make more than that, and half make less.
Is Slidell-Mandeville-Covington, LA expensive?
In Slidell-Mandeville-Covington, LA, the median home is worth about $284,000, and the typical rent is about $1,332 a month.
How educated are people in Slidell-Mandeville-Covington, LA?
About 37.7% of adults age 25 and over in Slidell-Mandeville-Covington, LA hold a bachelor's degree or higher.
What is the poverty rate in Slidell-Mandeville-Covington, LA?
About 11.4% of people in Slidell-Mandeville-Covington, LA live below the federal poverty line.
Has Slidell-Mandeville-Covington, LA grown since 1990?
Yes, Slidell-Mandeville-Covington, LA has grown since 1990. The population has added about 127,913 residents, a change of about 89 percent over that period.
