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.

Ballwin, MO Population, Income & Demographics 2026

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

31,279

Median Agei

42.6

Race & Ethnicityi

White

75%23,448

Asian

8.9%2,772

Two or More

8.2%2,578

Hispanic/Latino

4.1%1,295

Black

2.8%877

Other

1%299

American Indian/Alaska Native

0%10

Educational Attainment (Age 25+)i

GED/Alternative

1.2%264

High School Diploma

9.8%2,149

Some College (<1 yr)

5.1%1,128

Some College (1+ yr)

9.9%2,175

Associate's Degree

6.6%1,462

Bachelor's Degree

42.6%9,383

Master's Degree

17.3%3,809

Professional Degree

2.2%476

Doctorate

3.1%688

HS or Higher

97.8%

BA or Higher

65.2%

Graduate+

22.6%

Housingi

Median Home Valuei

$377,100

Median Renti

$1,418

Tenure

Owner-Occupied

84.2%10,165

Renter-Occupied

15.8%1,914

Total Units

12,563

Homeownership

84.2%

Vacancy Rate

3.9%

Home Values

Under $50K

1.3%131

$50K–$100K

0.3%26

$100K–$150K

0.5%52

$150K–$200K

2.9%298

$200K–$300K

19.3%1,964

$300K–$500K

60.1%6,109

$500K–$1M

15.3%1,552

$1M+

0.3%33

Rent Distribution

$500–$750

$750–$1,000

150

$1,000–$1,250

315

$1,250–$1,500

576

$1,500–$2,000

484

$2,000+

215

Year Built

2010–2019

2.7%336

2000–2009

5.3%666

1990–1999

15.9%1,995

1980–1989

17.2%2,162

1970–1979

24.1%3,028

1960–1969

25%3,139

1950–1959

8%1,000

1940–1949

1.4%180

1939 or earlier

0.5%57

Heating Fuel

Utility Gas

85.2%10,290

Electricity

13.9%1,684

Bottled/LP Gas

0.8%92

Wood

0.1%13

Economyi

Median Household Incomei

$124,626

Mean Household Incomei

$146,690

Per Capita Incomei

$57,442

Poverty Ratei

4.8%

Unemploymenti

2.9%

Labor Forcei

16,849

Household Income Distribution

Under $10K

1.8%223

$10K–$15K

2%245

$15K–$20K

1.3%160

$20K–$25K

1.9%228

$25K–$30K

2.7%327

$30K–$35K

1.8%218

$35K–$40K

2.9%345

$40K–$45K

2.1%251

$45K–$50K

2.4%295

$50K–$60K

4.4%526

$60K–$75K

5.3%641

$75K–$100K

11.8%1,422

$100K–$125K

9.7%1,176

$125K–$150K

10.8%1,308

$150K–$200K

16.3%1,972

$200K+

22.7%2,742

Ancestry & Heritage

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

Foreign-Born Populationi

Foreign-Borni

2,8819.2%

By Region

Top Countries

India

884

Korea

435

China

336

Mexico

248

Philippines

149

Canada

Germany

Social Characteristicsi

Marital Status (15+)i

Veteransi

1,165(4.8% of civilian adults)

Health Insurancei

95.4%Insured

4.6%Uninsured