Slidell, Louisiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Slidell, Louisiana is 28,664 as of the 2023 American Community Survey, making it the 15th-largest city in Louisiana. The median household income is $66,657, the median home value is $207,800, and the median age is 38.6.
The population has grown 4.1% since 2010 (27,315 → 28,440).
28,664
Population
1884
People / sq mi
$66,657
Median Income
$207,800
Median Home Value
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Slidell covers 15.2 sq mi of land at 1884 people per square mile.
About Slidell, LA
In Slidell, home values do the distinguishing — a median of $207,800. With 28,664 residents, Slidell is a city in Louisiana. It ranks #15 among cities in Louisiana by population.
Household earnings are middling, with a median of $66,657 — below the US median of $78,538. Poverty runs at 10.2%, below the national 12.4%. Homes are comparatively cheap — a median value of $207,800, with typical rent around $1,381.
Degree attainment is mid-range for US cities: 30.9% of adults hold a four-year degree, below the national 35.0%. Around 12.0% of workers work from home, below the national 14.0%, and the average commute runs about 29 minutes each way.
Slidell city Population History (2010-2024)
The city of Slidell city had a population of 27,315 in 2010 and 28,440 in 2024, a 4.1% growth over 14 years. The peak was 28,737 in 2021. Average annual growth rate: 0.29%.
28,440
Population (2024)
27,315
Population (2010)
28,737
Peak (2021)
0.29%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 27,315 |
| 2011 | 27,443 |
| 2012 | 27,471 |
| 2013 | 27,564 |
| 2014 | 27,643 |
| 2015 | 27,876 |
| 2016 | 27,929 |
| 2017 | 27,911 |
| 2018 | 27,770 |
| 2019 | 27,633 |
| 2020 | 28,629 |
| 2021 | 28,737 |
| 2022 | 28,601 |
| 2023 | 28,470 |
| 2024 | 28,440 |
Race & Ethnicity
| White | 63.3% |
| Black or African American | 20.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.0% |
| Two or More Races | 0.0% |
Economy & Income
$66,657
Median Household Income
$33,984
Per Capita Income
10.2%
Poverty Rate
2.6%
Unemployment Rate
Housing
$207,800
Median Home Value
$1,381
Median Rent
69.8%
Owner-Occupied
Education
90.4%
High School+
30.9%
Bachelor's+
Commute
0.7%
Drive Alone
75.0%
Public Transit
12.0%
Work From Home
29.4 min
Avg Commute
Community Profile
27.2%
Foreign Born
92.4%
Non-English at Home
8.4%
Veterans
18.7%
With Disability
89.3%
Health Insurance
94.8%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 25.6% |
| Finance, Insurance & Real Estate | 10.5% |
| Education, Health Care & Social Services | 10.1% |
| Construction | 7.9% |
| Retail Trade | 6.4% |
| Information | 6.2% |
| Manufacturing | 6.1% |
| Arts, Entertainment & Food Services | 5.2% |
| Public Administration | 4.2% |
| Agriculture & Mining | 2.3% |
| Transportation & Warehousing | 1.9% |
Largest cities in Louisiana
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City rankings
Frequently Asked Questions
Slidell, Louisiana has a population of 28,664 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 15th-largest city in Louisiana.
The median household income in Slidell, Louisiana is $66,657, with 10.2% of residents living below the federal poverty level.
The median home value in Slidell, Louisiana is $207,800, with median monthly rent at $1,381 and a homeownership rate of 69.8%.
The median age in Slidell, Louisiana is 38.6 years. The population is 47.7% male and 52.3% female.
The population has grown 4.1% since 2010 (27,315 → 28,440).
Slidell city, LA Climate
Slidell city, LA has an average annual temperature of 19.7°C (67°F) and receives about 1548 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
19.7°C
Avg Temp
1548
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 11° / 51° | 133 mm |
| February | 12° / 54° | 141 mm |
| March | 16° / 61° | 145 mm |
| April | 19° / 67° | 115 mm |
| May | 23° / 74° | 124 mm |
| June | 27° / 80° | 122 mm |
| July | 28° / 82° | 160 mm |
| August | 27° / 81° | 149 mm |
| September | 26° / 78° | 133 mm |
| October | 20° / 69° | 76 mm |
| November | 15° / 60° | 112 mm |
| December | 12° / 54° | 138 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Slidell city, LA
The most comfortable months to visit Slidell city, LA are typically October, April and May, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 33°C high). The coldest is January (near 5°C low). July is usually the wettest month.
Where to stay near Slidell
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.