Where does this demographic data come from?

All demographic data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates, which samples about 3.5 million households annually. The 5-year estimates provide the most reliable data for small geographies like municipalities.

What is the difference between Census data and ACS data?

The decennial Census (conducted every 10 years) is a full population count focusing on basic demographics. The ACS is an ongoing survey that collects detailed data on income, education, housing, commute patterns, and more. ACS data is updated annually but represents averages over a 5-year period.

How accurate is this data for small towns?

For smaller municipalities, ACS estimates have wider margins of error because fewer residents are sampled. The 5-year estimates reduce this uncertainty by averaging over a longer period. For towns under 5,000 people, treat specific numbers as approximations rather than precise counts.

Weldon Spring, MO Population, Income & Demographics 2026

Showing latest census year. Full demographic history available with a paid plan. View plans →

Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

5,310

Median Agei

52.2

Race & Ethnicityi

White

93.9%4,984

Asian

3.8%204

Two or More

1%54

Black

0.8%40

Other

0.5%28

Educational Attainment (Age 25+)i

GED/Alternative

1.6%62

High School Diploma

17%663

Some College (<1 yr)

6.9%271

Some College (1+ yr)

9.6%374

Associate's Degree

5.4%212

Bachelor's Degree

32%1,252

Master's Degree

20.6%806

Professional Degree

2.4%94

Doctorate

2.9%114

HS or Higher

98.4%

BA or Higher

57.9%

Graduate+

25.9%

Housingi

Median Home Valuei

$544,300

Median Renti

$2,800

Tenure

Owner-Occupied

83.4%1,699

Renter-Occupied

16.6%339

Total Units

2,199

Homeownership

83.4%

Vacancy Rate

7.3%

Home Values

Under $50K

2.9%50

$50K–$100K

0.9%15

$100K–$150K

2.5%42

$150K–$200K

1.8%31

$200K–$300K

4.9%84

$300K–$500K

30.1%512

$500K–$1M

51.1%869

$1M+

5.7%96

Rent Distribution

$1,000–$1,250

$1,250–$1,500

$1,500–$2,000

$2,000+

171

Year Built

2020 or later

10.1%223

2010–2019

8%175

2000–2009

10.1%221

1990–1999

45.5%1,001

1980–1989

22.4%492

1970–1979

0.5%10

1960–1969

1.5%33

1939 or earlier

2%44

Heating Fuel

Utility Gas

72.5%1,478

Electricity

24.8%506

Bottled/LP Gas

2%41

No Fuel

0.6%13

Economyi

Median Household Incomei

$158,548

Mean Household Incomei

$210,904

Per Capita Incomei

$82,014

Poverty Ratei

0.7%

Unemploymenti

4.2%

Labor Forcei

2,407

Household Income Distribution

$10K–$15K

0.7%14

$15K–$20K

1.3%26

$20K–$25K

0.5%11

$25K–$30K

0.7%15

$30K–$35K

0.6%12

$35K–$40K

1.6%32

$40K–$45K

4.2%85

$45K–$50K

1.9%39

$50K–$60K

4.1%84

$60K–$75K

6.2%126

$75K–$100K

6.3%129

$100K–$125K

10%203

$125K–$150K

8.9%181

$150K–$200K

14.5%295

$200K+

38.6%786

Ancestry & Heritage

Self-reported ancestry groups. Residents may report multiple ancestries, so totals may exceed 100%.

Foreign-Born Populationi

Foreign-Borni

2394.5%

By Region

Top Countries

India

143

Canada

United Kingdom

Korea

Social Characteristicsi

Marital Status (15+)i

Veteransi

284(6.7% of civilian adults)

Health Insurancei

98.7%Insured

1.3%Uninsured