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.

Brookfield, WI Population, Income & Demographics 2026

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

4,144

Median Agei

44.1

Race & Ethnicityi

White

91.6%3,797

Hispanic/Latino

4.1%168

Two or More

2.1%85

Asian

1%42

Black

0.8%34

Native Hawaiian/Pacific Islander

0.3%11

American Indian/Alaska Native

0.2%7

Educational Attainment (Age 25+)i

GED/Alternative

8.5%258

High School Diploma

40.2%1,218

Some College (<1 yr)

8.9%269

Some College (1+ yr)

10.8%326

Associate's Degree

4.4%133

Bachelor's Degree

7.9%239

Master's Degree

5.2%158

Professional Degree

0.4%12

Doctorate

0.4%11

HS or Higher

86.6%

BA or Higher

13.9%

Graduate+

Housingi

Median Home Valuei

$332,400

Median Renti

$1,414

Tenure

Owner-Occupied

81.8%6,284

Renter-Occupied

18.2%1,399

Total Units

7,927

Homeownership

81.8%

Vacancy Rate

3.1%

Economyi

Median Household Incomei

$110,295

Mean Household Incomei

$128,313

Per Capita Incomei

$51,076

Poverty Ratei

5.4%

Unemploymenti

3.3%

Labor Forcei

10,371

Household Income Distribution

Under $10K

2.7%210

$10K–$15K

1.1%87

$15K–$20K

1.7%131

$20K–$25K

0.8%59

$25K–$30K

3.9%296

$30K–$35K

2.9%223

$35K–$40K

1.5%116

$40K–$45K

1.9%143

$45K–$50K

3.9%296

$50K–$60K

5.1%393

$60K–$75K

10.9%835

$75K–$100K

10.1%775

$100K–$125K

11.1%853

$125K–$150K

9.8%751

$150K–$200K

13.6%1,046

$200K+

19.1%1,469

Federally Subsidized Housingi

HUD

The federal government helps low-income families, seniors, and people with disabilities afford housing through several programs. Residents typically pay about 30% of their income toward rent, with the government covering the rest. This data shows how many households in this community receive that assistance.

Subsidized Homesi

Programs in this community

Housing Choice Vouchers10 homes

Rental vouchers (Section 8) that help tenants pay for private-market housing

Ancestry & Heritage

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

Social Characteristicsi

Marital Status (15+)i

Veteransi

778(5.3% of civilian adults)