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.

Willowbrook, IL 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

9,131

Median Agei

Race & Ethnicityi

White

64.9%5,922

Asian

18.9%1,729

Hispanic/Latino

9.7%887

Black

3.7%341

Two or More

1.4%126

Other

1.4%126

Educational Attainment (Age 25+)i

GED/Alternative

4.3%297

High School Diploma

17.1%1,197

Some College (<1 yr)

4.6%323

Some College (1+ yr)

12.6%877

Associate's Degree

4.4%307

Bachelor's Degree

26%1,815

Master's Degree

16.5%1,151

Professional Degree

6.3%439

Doctorate

4.3%300

HS or Higher

96%

BA or Higher

53.1%

Graduate+

27.1%

Housingi

Median Home Valuei

$358,600

Median Renti

$1,747

Tenure

Owner-Occupied

72.6%2,879

Renter-Occupied

27.4%1,086

Total Units

4,283

Homeownership

72.6%

Vacancy Rate

7.4%

Economyi

Median Household Incomei

$99,239

Mean Household Incomei

$130,598

Per Capita Incomei

$57,261

Poverty Ratei

6.5%

Unemploymenti

4.4%

Labor Forcei

4,967

Household Income Distribution

Under $10K

2.4%96

$10K–$15K

2.2%87

$15K–$20K

2.4%95

$20K–$25K

2.6%103

$25K–$30K

2.4%97

$30K–$35K

2.1%82

$35K–$40K

2%80

$40K–$45K

1.5%58

$45K–$50K

6.1%240

$50K–$60K

9.1%361

$60K–$75K

6.8%271

$75K–$100K

11.9%470

$100K–$125K

10.8%429

$125K–$150K

10%396

$150K–$200K

10.7%426

$200K+

17%674

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

Residentsi

113

Avg. Tenant Renti

$565/mo

Avg. Waitlisti

35 months

Programs in this community

Housing Choice Vouchers53 homes97% occupied$565/mo rent

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

Household Incomei

Based on area median of $99,239/yr

Extremely low incomeUnder $30K/yr

76%

Very low income$30K–$50K/yr

19%

Low income$50K–$79K/yr

Who Receives This Housing

85% of subsidized households are headed by a single mother

86% of subsidized households are minority

26% of subsidized households include someone with a disability

20% of subsidized households include a senior (62+)

Ancestry & Heritage

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

Social Characteristicsi

Marital Status (15+)i

Veteransi

272(3.5% of civilian adults)