Slidell, Louisiana Demographics & Population 2026
During the 2020–2024 ACS period, Slidell, Louisiana had a total population of 28,561, the 15th largest city in Louisiana, with a median household income of $70,497, which is 16% higher than the state average. The poverty rate is 15.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Slidell Quick Facts
How Slidell Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 28,664 | 28,561 | -0.4% |
| Median household income | $66,657 | $70,497 | +5.8% |
| Median home value | $207,800 | $217,700 | +4.8% |
How Slidell Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 59 | National average: 61
Education
Educational Attainment (Adults 25+)
Slidell Rankings in Louisiana
Explore Louisiana Rankings
Other Cities in St. Tammany Parish
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Mandeville | 12,946 | $94,405 | 7.1% | $376,100 |
| Covington | 11,658 | $75,851 | 11.7% | $295,100 |
| Eden Isle | 7,683 | $78,426 | 4.8% | $371,600 |
| Lacombe | 6,310 | $72,813 | 18.0% | $207,900 |
| Abita Springs | 2,699 | $77,257 | 8.7% | $269,300 |
| Pearl River | 2,614 | $56,719 | 17.9% | $235,200 |
| Madisonville | 869 | $109,583 | 3.6% | $399,600 |
| Folsom | 709 | $62,375 | 12.6% | $226,000 |
| Lewisburg | 484 | $155,179 | 0.0% | $481,400 |
| Sun | 381 | N/A | 11.6% | $160,700 |
Cities Similar to Slidell
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Laplace | 28,343 | $69,030 | $199,900 | 19.6% | 13.1% |
| Central | 29,783 | $89,554 | $288,700 | 35.3% | 5.4% |
| Houma | 32,392 | $58,194 | $205,900 | 23.8% | 16.3% |
| New Iberia | 27,571 | $47,087 | $158,300 | 17.3% | 26.7% |
| Terrytown | 24,726 | $51,718 | $220,300 | 21.9% | 19.2% |
Population Overview
Slidell is a mid-sized community located in Louisiana, within St. Tammany Parish. The total population is 28,561. It ranks as the 15th most populous out of 488 Census-designated places in Louisiana.
Age Demographics
The median age in Slidell is 38.9 years. This is 2% higher than the state median of 38.0 years.
Economy, Income & Housing
The median household income in Slidell is $70,497. This is 16% higher than the state median of $60,756. It is also 13% lower than the national median of $80,734. The poverty rate stands at 15.7%. This is 17% lower than the state poverty rate of 18.9%. The unemployment rate is 5.8%. This is 9% lower than the state rate of 6.3%. The median home value is $217,700. Housing costs are about the same as the state median of $216,500. The home-value-to-income ratio is 3.1x. 68.5% of occupied housing units are owner-occupied. This homeownership rate is 2% higher than the state average of 67.4%.
Race & Ethnicity
The largest racial or ethnic group in Slidell is White (non-Hispanic), making up 61.4% of the population. Black or African American residents account for 19.6%.
Education
31.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 16% higher than the state rate of 27.0%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.0%.
Data Sources & Methodology
All demographic data for Slidell, Louisiana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Louisiana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 488 Census-designated places in Louisiana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Slidell, Louisiana?
Slidell, Louisiana has a population of 28,561 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Slidell, LA?
The median household income in Slidell is $70,497, which is 13% lower than the national median of $80,734.
What is the poverty rate in Slidell, LA?
The poverty rate in Slidell is 15.7%. This means approximately 4,380 residents live below the federal poverty line.
What is the racial makeup of Slidell, Louisiana?
Slidell's population is 61.4% White, 19.6% Black, 9.8% Hispanic/Latino, and 2.1% Asian.
What is the median home value in Slidell, LA?
The median home value in Slidell is $217,700. The home-value-to-income ratio is 3.1x.
How educated is Slidell, Louisiana?
31.4% of adults (25+) in Slidell hold a bachelor's degree or higher, and 9.9% hold a graduate or professional degree.