Florissant, Missouri demographics

Florissant, MO demographics: median age 37.6; 22.5% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Florissant city, Missouri · Incorporated city · GEOID 2924778. The survey estimates a population of 51,773 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Florissant is 37.6 years, with a 90% margin of error of 1.7 years. There are 21,229 households (±634). 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	37.6 ±1.7	39.0 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 51,773
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Under 18	11,566 ±943	22.3% ±1.8 pp	22.3%	22.0%
18–34	12,079 ±1,125	23.3% ±2.2 pp	22.3%	22.8%
35–64	19,790 ±1,301	38.2% ±2.5 pp	37.5%	38.0%
65 and older	8,338 ±739	16.1% ±1.4 pp	17.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 51,773
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Male	24,455 ±911	47.2% ±1.8 pp	49.3%	49.5%
Female	27,318 ±900	52.8% ±1.7 pp	50.7%	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: 51,773
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
White alone	23,638 ±1,637	45.7% ±3.2 pp	77.5%	61.0%
Black or African American alone	22,769 ±1,863	44.0% ±3.6 pp	11.0%	12.2%
American Indian and Alaska Native alone	13 ±16 · low precision	0.0% ±0.0 pp · low precision	0.3%	0.9%
Asian alone	455 ±349 · low precision	0.9% ±0.7 pp · low precision	2.1%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±29 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.2%
Some other race alone	687 ±411 · low precision	1.3% ±0.8 pp · low precision	1.9%	7.1%
Two or more races	4,211 ±955	8.1% ±1.8 pp	7.1%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 51,773
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Not Hispanic or Latino	50,512 ±503	97.6% ±1.0 pp	94.8%	80.7%
Hispanic or Latino	1,261 ±499	2.4% ±1.0 pp	5.2%	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: 21,229
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Married-couple family	7,759 ±548	36.5% ±2.3 pp	46.5%	46.9%
Other family: male householder, no spouse present	1,421 ±395	6.7% ±1.8 pp	4.6%	5.1%
Other family: female householder, no spouse present	3,846 ±596	18.1% ±2.8 pp	11.0%	12.2%
Nonfamily: householder living alone	7,024 ±763	33.1% ±3.5 pp	31.1%	28.7%
Nonfamily: householder not living alone	1,179 ±259	5.6% ±1.2 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 21,229
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Households with people under 18	6,000 ±502	28.3% ±2.2 pp	28.5%	29.5%
Households without people under 18	15,229 ±895	71.7% ±3.6 pp	71.5%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 21,229
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
One-person nonfamily households	7,024 ±763	33.1% ±3.5 pp	31.1%	28.7%
Two-person households	6,877 ±680	32.4% ±3.1 pp	35.0%	33.8%
Three-person households	3,323 ±506	15.7% ±2.3 pp	14.1%	15.3%
Four-person households	2,500 ±496	11.8% ±2.3 pp	11.6%	12.6%
Five-person households	1,047 ±235	4.9% ±1.1 pp	5.2%	5.9%
Six-person households	206 ±121 · low precision	1.0% ±0.6 pp · low precision	1.9%	2.2%
Seven or more people	252 ±122	1.2% ±0.6 pp	1.1%	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: 51,773
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Native	49,671 ±711	95.9% ±1.4 pp	95.5%	85.9%
Foreign born	2,102 ±711	4.1% ±1.4 pp	4.5%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 48,825
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
English only	45,975 ±1,018	94.2% ±1.8 pp	93.3%	77.7%
Spanish	1,281 ±535	2.6% ±1.1 pp	2.9%	13.6%
French, Haitian, or Cajun	0 ±29 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.7%
German or other West Germanic	77 ±70 · low precision	0.2% ±0.1 pp · low precision	0.5%	0.5%
Russian, Polish, or other Slavic	73 ±73 · low precision	0.1% ±0.1 pp · low precision	0.5%	0.7%
Other Indo-European	43 ±48 · low precision	0.1% ±0.1 pp · low precision	0.6%	2.0%
Korean	19 ±39 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	23 ±41 · low precision	0.0% ±0.1 pp · low precision	0.4%	1.1%
Vietnamese	225 ±295 · low precision	0.5% ±0.6 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	76 ±80 · low precision	0.2% ±0.2 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	0 ±29 · low precision	0.0% ±0.1 pp · low precision	0.5%	1.1%
Arabic	368 ±370 · low precision	0.8% ±0.8 pp · low precision	0.2%	0.5%
Other and unspecified	665 ±475 · low precision	1.4% ±1.0 pp · low precision	0.4%	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: 35,721
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Less than high school graduate	2,545 ±478	7.1% ±1.3 pp	8.1%	10.4%
High school graduate or equivalency	10,965 ±957	30.7% ±2.6 pp	30.2%	26.0%
Some college, no degree	9,120 ±938	25.5% ±2.6 pp	20.8%	19.1%
Associate’s degree	5,071 ±750	14.2% ±2.1 pp	8.4%	8.8%
Bachelor’s degree	5,571 ±635	15.6% ±1.7 pp	19.8%	21.6%
Graduate or professional degree	2,449 ±447	6.9% ±1.2 pp	12.6%	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: 50,896
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Same house	45,628 ±989	89.6% ±1.8 pp	87.4%	87.7%
Moved within same county	3,366 ±707	6.6% ±1.4 pp	6.2%	6.3%
Moved from a different county in the same state	957 ±357	1.9% ±0.7 pp	3.6%	3.1%
Moved from a different state	818 ±575 · low precision	1.6% ±1.1 pp · low precision	2.5%	2.3%
Moved from abroad	127 ±97 · low precision	0.2% ±0.2 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

8.3% of Florissant residents (±1.4 percentage points) had no health insurance coverage when surveyed, compared with 8.8% in Missouri and 8.4% nationally. 92.6% 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	Florissant	Missouri	U.S.	Compared with Missouri
People without health insurance Civilian noninstitutionalized population	8.3% ±1.4 pp	8.8%	8.4%	Not statistically different
Households with a broadband subscription Households	92.6% ±1.7 pp	89.3%	91.0%	Higher
Veterans Civilian population age 18 and older	6.8% ±1.0 pp	7.3%	6.2%	Not statistically different

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 Florissant . 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 Florissant housing and cost context or return to the city profile.