Weldon Spring, Missouri demographics

Weldon Spring, MO demographics: median age 52.2; 57.9% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Weldon Spring city, Missouri · Incorporated city · GEOID 2978314. The survey estimates a population of 5,310 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Weldon Spring is 52.2 years, with a 90% margin of error of 5.3 years. There are 2,038 households (±119). 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	52.2 ±5.3	39.0 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 5,310
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Under 18	1,061 ±250	20.0% ±4.7 pp	22.3%	22.0%
18–34	521 ±144	9.8% ±2.7 pp	22.3%	22.8%
35–64	2,216 ±314	41.7% ±5.9 pp	37.5%	38.0%
65 and older	1,512 ±264	28.5% ±5.0 pp	17.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 5,310
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Male	2,637 ±121	49.7% ±2.3 pp	49.3%	49.5%
Female	2,673 ±114	50.3% ±2.1 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: 5,310
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
White alone	4,984 ±249	93.9% ±4.7 pp	77.5%	61.0%
Black or African American alone	40 ±50 · low precision	0.8% ±0.9 pp · low precision	11.0%	12.2%
American Indian and Alaska Native alone	0 ±17 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.9%
Asian alone	204 ±240 · low precision	3.8% ±4.5 pp · low precision	2.1%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±17 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.2%
Some other race alone	28 ±44 · low precision	0.5% ±0.8 pp · low precision	1.9%	7.1%
Two or more races	54 ±39 · low precision	1.0% ±0.7 pp · low precision	7.1%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 5,310
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Not Hispanic or Latino	5,310 ±33	100.0% ±0.0 pp	94.8%	80.7%
Hispanic or Latino	0 ±17 · low precision	0.0% ±0.3 pp · low precision	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: 2,038
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Married-couple family	1,534 ±147	75.3% ±5.7 pp	46.5%	46.9%
Other family: male householder, no spouse present	43 ±38 · low precision	2.1% ±1.9 pp · low precision	4.6%	5.1%
Other family: female householder, no spouse present	63 ±64 · low precision	3.1% ±3.1 pp · low precision	11.0%	12.2%
Nonfamily: householder living alone	319 ±116	15.7% ±5.6 pp	31.1%	28.7%
Nonfamily: householder not living alone	79 ±80 · low precision	3.9% ±3.9 pp · low precision	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 2,038
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Households with people under 18	576 ±114	28.3% ±5.3 pp	28.5%	29.5%
Households without people under 18	1,462 ±184	71.7% ±8.0 pp	71.5%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 2,038
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
One-person nonfamily households	319 ±116	15.7% ±5.6 pp	31.1%	28.7%
Two-person households	976 ±210	47.9% ±9.9 pp	35.0%	33.8%
Three-person households	222 ±105	10.9% ±5.1 pp	14.1%	15.3%
Four-person households	327 ±133	16.0% ±6.5 pp	11.6%	12.6%
Five-person households	173 ±99 · low precision	8.5% ±4.9 pp · low precision	5.2%	5.9%
Six-person households	0 ±24 · low precision	0.0% ±1.2 pp · low precision	1.9%	2.2%
Seven or more people	21 ±35 · low precision	1.0% ±1.7 pp · low precision	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: 5,310
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Native	5,071 ±240	95.5% ±4.5 pp	95.5%	85.9%
Foreign born	239 ±241 · low precision	4.5% ±4.5 pp · low precision	4.5%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 5,062
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
English only	4,833 ±187	95.5% ±2.4 pp	93.3%	77.7%
Spanish	0 ±17 · low precision	0.0% ±0.3 pp · low precision	2.9%	13.6%
French, Haitian, or Cajun	41 ±47 · low precision	0.8% ±0.9 pp · low precision	0.3%	0.7%
German or other West Germanic	47 ±71 · low precision	0.9% ±1.4 pp · low precision	0.5%	0.5%
Russian, Polish, or other Slavic	0 ±17 · low precision	0.0% ±0.3 pp · low precision	0.5%	0.7%
Other Indo-European	122 ±173 · low precision	2.4% ±3.4 pp · low precision	0.6%	2.0%
Korean	0 ±17 · low precision	0.0% ±0.3 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	0 ±17 · low precision	0.0% ±0.3 pp · low precision	0.4%	1.1%
Vietnamese	19 ±29 · low precision	0.4% ±0.6 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	0 ±17 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	0 ±17 · low precision	0.0% ±0.3 pp · low precision	0.5%	1.1%
Arabic	0 ±17 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.5%
Other and unspecified	0 ±17 · low precision	0.0% ±0.3 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: 3,911
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Less than high school graduate	63 ±73 · low precision	1.6% ±1.9 pp · low precision	8.1%	10.4%
High school graduate or equivalency	725 ±228	18.5% ±5.7 pp	30.2%	26.0%
Some college, no degree	645 ±169	16.5% ±4.2 pp	20.8%	19.1%
Associate’s degree	212 ±77	5.4% ±1.9 pp	8.4%	8.8%
Bachelor’s degree	1,252 ±197	32.0% ±4.7 pp	19.8%	21.6%
Graduate or professional degree	1,014 ±252	25.9% ±6.3 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: 5,310
Category	Count ± MOE	Share ± MOE (pp)	Missouri	U.S.
Same house	4,661 ±378	87.8% ±7.1 pp	87.4%	87.7%
Moved within same county	209 ±141 · low precision	3.9% ±2.7 pp · low precision	6.2%	6.3%
Moved from a different county in the same state	86 ±63 · low precision	1.6% ±1.2 pp · low precision	3.6%	3.1%
Moved from a different state	328 ±324 · low precision	6.2% ±6.1 pp · low precision	2.5%	2.3%
Moved from abroad	26 ±46 · low precision	0.5% ±0.9 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

1.3% of Weldon Spring residents (±1.0 percentage points) had no health insurance coverage when surveyed, compared with 8.8% in Missouri and 8.4% nationally. 97.4% 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	Weldon Spring	Missouri	U.S.	Compared with Missouri
People without health insurance Civilian noninstitutionalized population	1.3% ±1.0 pp · low precision	8.8%	8.4%	Lower
Households with a broadband subscription Households	97.4% ±0.3 pp	89.3%	91.0%	Higher
Veterans Civilian population age 18 and older	6.7% ±2.4 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 Weldon Spring . 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 Weldon Spring housing and cost context or return to the city profile.