Demographics of Slidell city, Louisiana

Slidell city, Louisiana had 28,341 people on July 1, 2025, by the Census Bureau’s estimate: −265 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Slidell city, in four figures

28,341
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 28,561 ±54.; −0.9%
Change since July 2020: −265 people.; 38.9 ±2.0
Median age: ACS 2020–⁠2024.; $70,497 ±$7,225
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Slidell city, Louisiana's population shrank 0.9% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Slidell city, Louisiana's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Slidell city, Louisiana's population shrank 0.9% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Slidell city, Louisiana's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	28,606	100.0	100.0
2021	28,722	100.4	100.2
2022	28,614	100.0	100.7
2023	28,488	99.6	101.6
2024	28,467	99.5	102.5
2025	28,341	99.1	103.1

Population of Slidell city, Louisiana on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	28,606	—
2021	28,722	+116
2022	28,614	−108
2023	28,488	−126
2024	28,467	−21
2025	28,341	−126

Age, 2020–2024

The median age is 38.9 ±2.0: for men 37.6 ±3.3 and for women 39.8 ±2.9. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Slidell city by age, ACS 2020–2024
Age	People	Share	Louisiana	United States
Under 5	1,656 ±331	5.8% ±1.2	6.2% ±<0.1	5.6% ±<0.1
5 to 17	5,123 ±756	17.9% ±2.6	17.3% ±0.1	16.3% ±<0.1
18 to 24	2,212 ±481	7.7% ±1.7	9.1% ±0.1	9.1% ±<0.1
25 to 44	7,816 ±798	27.4% ±2.8	26.6% ±0.1	26.9% ±<0.1
45 to 64	5,656 ±646	19.8% ±2.3	24.1% ±0.1	24.8% ±<0.1
65 and over	6,098 ±671	21.4% ±2.3	16.7% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $70,497 ±$7,225, and income per person $34,749 ±$2,943, in 2024 dollars. The median is $60,756 ±$408 in Louisiana and $80,734 ±$166 in the United States.

Households by income

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Households in Slidell city by income, ACS 2020–2024
Household income	Households	Share	Louisiana	United States
Under $25,000	1,909 ±408	17.4% ±3.6	22.4% ±0.3	14.6% ±<0.1
$25,000 to $49,999	1,959 ±412	17.8% ±3.6	20.2% ±0.3	16.7% ±<0.1
$50,000 to $74,999	2,121 ±490	19.3% ±4.3	15.9% ±0.2	15.5% ±<0.1
$75,000 to $99,999	1,512 ±354	13.8% ±3.1	11.7% ±0.2	12.6% ±<0.1
$100,000 to $149,999	1,977 ±419	18.0% ±3.7	14.8% ±0.3	17.5% ±<0.1
$150,000 to $199,999	895 ±255	8.1% ±2.3	7.3% ±0.2	9.6% ±<0.1
$200,000 or more	622 ±204	5.7% ±1.8	7.8% ±0.2	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Slidell city by age, ACS 2020–2024
Age	Below poverty	Rate	Louisiana	United States
All ages	4,380 ±1,043	15.7% ±3.7	18.9% ±0.3	12.5% ±0.1
Under 18	1,742 ±456	26.8% ±6.1	25.4% ±0.5	16.1% ±0.1
18 to 59	1,898 ±615	13.4% ±4.2	17.7% ±0.3	11.6% ±0.1
60 and over	740 ±230	10.1% ±2.9	15.2% ±0.3	11.0% ±<0.1

Housing, 2020–2024

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Housing in Slidell city, ACS 2020–2024
Measure	Slidell city	Louisiana	United States
Housing units	12,203 ±563	2,108,902 ±333	143,775,355 ±10,234
Occupied	90.1% ±2.7	85.6% ±0.2	89.9% ±0.1
Vacant	9.9% ±3.0	14.4% ±0.2	10.1% ±0.1
Owner occupied	68.5% ±4.8	67.4% ±0.4	65.2% ±0.3
Renter occupied	31.5% ±4.1	32.6% ±0.3	34.8% ±0.1
Median home value	$217,700 ±$6,934	$216,500 ±$1,367	$332,700 ±$236
Median gross rent	$1,375 ±$78	$1,064 ±$8	$1,413 ±$2
Median year built	1979 ±2	1983 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Slidell city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Louisiana	United States
Hispanic or Latino	2,800 ±688	9.8% ±2.4	7.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	17,535 ±1,174	61.4% ±4.1	55.7% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	5,594 ±1,055	19.6% ±3.7	30.5% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	260 to 918	0.9% to 3.2%	1.7% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	4 to 58	< 0.1% to 0.2%	0.4% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 26	0% to 0.1%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 198	0% to 0.7%	0.5% ±0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,916 ±670	6.7% ±2.3	3.8% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Slidell city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Louisiana	United States
Born in the state	19,131 ±903	67.0% ±3.2	77.2% ±0.2	57.3% ±<0.1
Born in another state	7,844 ±915	27.5% ±3.2	17.2% ±0.2	26.9% ±<0.1
Born a citizen outside the states	134 to 476	0.5% to 1.7%	0.7% ±<0.1	1.7% ±<0.1
Born abroad	1,281 ±385	4.5% ±1.3	4.9% ±0.1	14.1% ±<0.1
Naturalized citizens	715 ±241	2.5% ±0.8	2.0% ±0.1	7.4% ±<0.1
Not citizens	274 to 858	1.0% to 3.0%	2.9% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Slidell city among the places of Louisiana

14th of 102 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Louisiana page.

Places of Louisiana near Slidell city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Alexandria city	44,060 ±69
Prairieville CDP	35,238 ±2,072
Marrero CDP	32,540 ±1,988
Houma city	32,392 ±78
Central city	29,783 ±48
Slidell city	28,561 ±54
Laplace CDP	28,343 ±1,162
New Iberia city	27,571 ±54
Terrytown CDP	24,726 ±1,990
Chalmette CDP	22,616 ±1,017
Ruston city	22,284 ±30

Elsewhere on the site

Reported crime in Slidell city, Louisiana

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026