Slidell, Louisiana demographics

Slidell, LA demographics: median age 38.9; 31.4% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Slidell city, Louisiana · Incorporated city · GEOID 2270805. The survey estimates a population of 28,561 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Slidell is 38.9 years, with a 90% margin of error of 2.0 years. There are 10,995 households (±606). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	38.9 ±2.0	38.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 28,561
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
Under 18	6,779 ±825	23.7% ±2.9 pp	23.5%	22.0%
18–34	5,984 ±715	21.0% ±2.5 pp	22.4%	22.8%
35–64	9,700 ±880	34.0% ±3.1 pp	37.4%	38.0%
65 and older	6,098 ±671	21.4% ±2.3 pp	16.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 28,561
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
Male	13,738 ±574	48.1% ±2.0 pp	48.9%	49.5%
Female	14,823 ±570	51.9% ±2.0 pp	51.1%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 28,561
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
White alone	17,887 ±1,168	62.6% ±4.1 pp	56.9%	61.0%
Black or African American alone	5,804 ±1,063	20.3% ±3.7 pp	30.7%	12.2%
American Indian and Alaska Native alone	421 ±425 · low precision	1.5% ±1.5 pp · low precision	0.6%	0.9%
Asian alone	589 ±329 · low precision	2.1% ±1.2 pp · low precision	1.7%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±26 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.2%
Some other race alone	720 ±366 · low precision	2.5% ±1.3 pp · low precision	2.5%	7.1%
Two or more races	3,140 ±790	11.0% ±2.8 pp	7.4%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 28,561
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
Not Hispanic or Latino	25,761 ±686	90.2% ±2.4 pp	92.8%	80.7%
Hispanic or Latino	2,800 ±688	9.8% ±2.4 pp	7.2%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 10,995
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
Married-couple family	5,031 ±449	45.8% ±3.2 pp	41.8%	46.9%
Other family: male householder, no spouse present	779 ±288	7.1% ±2.6 pp	5.3%	5.1%
Other family: female householder, no spouse present	1,613 ±369	14.7% ±3.3 pp	15.5%	12.2%
Nonfamily: householder living alone	2,912 ±476	26.5% ±4.1 pp	31.6%	28.7%
Nonfamily: householder not living alone	660 ±238	6.0% ±2.1 pp	5.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 10,995
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
Households with people under 18	3,464 ±329	31.5% ±2.4 pp	30.3%	29.5%
Households without people under 18	7,531 ±688	68.5% ±5.0 pp	69.7%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 10,995
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
One-person nonfamily households	2,912 ±476	26.5% ±4.1 pp	31.6%	28.7%
Two-person households	4,210 ±534	38.3% ±4.4 pp	32.7%	33.8%
Three-person households	1,387 ±286	12.6% ±2.5 pp	15.8%	15.3%
Four-person households	1,423 ±298	12.9% ±2.6 pp	11.6%	12.6%
Five-person households	645 ±197	5.9% ±1.8 pp	5.5%	5.9%
Six-person households	191 ±97 · low precision	1.7% ±0.9 pp · low precision	1.8%	2.2%
Seven or more people	227 ±186 · low precision	2.1% ±1.7 pp · low precision	1.0%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 28,561
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
Native	27,280 ±386	95.5% ±1.3 pp	95.1%	85.9%
Foreign born	1,281 ±385	4.5% ±1.3 pp	4.9%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 26,905
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
English only	24,598 ±770	91.4% ±2.7 pp	91.5%	77.7%
Spanish	1,279 ±553	4.8% ±2.1 pp	4.7%	13.6%
French, Haitian, or Cajun	261 ±237 · low precision	1.0% ±0.9 pp · low precision	1.5%	0.7%
German or other West Germanic	99 ±119 · low precision	0.4% ±0.4 pp · low precision	0.1%	0.5%
Russian, Polish, or other Slavic	39 ±64 · low precision	0.1% ±0.2 pp · low precision	0.1%	0.7%
Other Indo-European	153 ±152 · low precision	0.6% ±0.6 pp · low precision	0.5%	2.0%
Korean	0 ±26 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	0 ±26 · low precision	0.0% ±0.1 pp · low precision	0.2%	1.1%
Vietnamese	333 ±226 · low precision	1.2% ±0.8 pp · low precision	0.5%	0.5%
Tagalog, including Filipino	34 ±38 · low precision	0.1% ±0.1 pp · low precision	0.1%	0.6%
Other Asian and Pacific Island	88 ±93 · low precision	0.3% ±0.3 pp · low precision	0.2%	1.1%
Arabic	0 ±26 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.5%
Other and unspecified	21 ±37 · low precision	0.1% ±0.1 pp · low precision	0.2%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 19,570
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
Less than high school graduate	1,960 ±459	10.0% ±2.3 pp	12.7%	10.4%
High school graduate or equivalency	4,897 ±605	25.0% ±2.9 pp	32.5%	26.0%
Some college, no degree	5,255 ±793	26.9% ±3.9 pp	20.4%	19.1%
Associate’s degree	1,321 ±369	6.8% ±1.9 pp	7.3%	8.8%
Bachelor’s degree	4,200 ±659	21.5% ±3.2 pp	17.0%	21.6%
Graduate or professional degree	1,937 ±388	9.9% ±1.9 pp	10.1%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 28,233
Category	Count ± MOE	Share ± MOE (pp)	Louisiana	U.S.
Same house	23,596 ±1,014	83.6% ±3.6 pp	88.6%	87.7%
Moved within same county	1,710 ±476	6.1% ±1.7 pp	6.2%	6.3%
Moved from a different county in the same state	1,291 ±577	4.6% ±2.0 pp	3.1%	3.1%
Moved from a different state	1,600 ±650	5.7% ±2.3 pp	1.6%	2.3%
Moved from abroad	36 ±37 · low precision	0.1% ±0.1 pp · low precision	0.4%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

11.9% of Slidell residents (±2.3 percentage points) had no health insurance coverage when surveyed, compared with 7.8% in Louisiana and 8.4% nationally. 95.5% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	Slidell	Louisiana	U.S.	Compared with Louisiana
People without health insurance Civilian noninstitutionalized population	11.9% ±2.3 pp	7.8%	8.4%	Higher
Households with a broadband subscription Households	95.5% ±1.6 pp	86.6%	91.0%	Higher
Veterans Civilian population age 18 and older	9.2% ±1.8 pp	6.1%	6.2%	Higher

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for Slidell . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read Slidell housing and cost context or return to the city profile.