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.

Buffalo Grove, IL Population, Income & Demographics 2026

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

42,891

Median Agei

Race & Ethnicityi

White

58.2%24,954

Asian

29.7%12,755

Hispanic/Latino

5.8%2,478

Black

3.4%1,443

Two or More

2.3%980

Other

0.5%231

Native Hawaiian/Pacific Islander

0.1%32

American Indian/Alaska Native

0%18

Educational Attainment (Age 25+)i

GED/Alternative

0.9%254

High School Diploma

8.7%2,565

Some College (<1 yr)

3.4%1,008

Some College (1+ yr)

8.7%2,571

Associate's Degree

6.4%1,892

Bachelor's Degree

37.6%11,053

Master's Degree

23.5%6,915

Professional Degree

3.7%1,088

Doctorate

3.8%1,127

HS or Higher

96.8%

BA or Higher

68.6%

Graduate+

31.1%

Housingi

Median Home Valuei

$412,300

Median Renti

$2,037

Tenure

Owner-Occupied

79.8%12,945

Renter-Occupied

20.2%3,268

Total Units

16,593

Homeownership

79.8%

Vacancy Rate

2.3%

Home Values

Under $50K

0.9%120

$50K–$100K

0.4%50

$100K–$150K

5.7%742

$150K–$200K

6.2%800

$200K–$300K

13.5%1,746

$300K–$500K

45.3%5,869

$500K–$1M

27.6%3,578

$1M+

0.3%40

Rent Distribution

Under $500

$500–$750

$750–$1,000

100

$1,000–$1,250

156

$1,250–$1,500

257

$1,500–$2,000

843

$2,000+

1,597

Year Built

2020 or later

0.3%47

2010–2019

1.7%288

2000–2009

4.5%746

1990–1999

17.5%2,911

1980–1989

30.5%5,062

1970–1979

28.3%4,690

1960–1969

12.3%2,048

1950–1959

3.3%552

1940–1949

0.4%61

1939 or earlier

1.1%188

Heating Fuel

Utility Gas

87.5%14,190

Electricity

9.8%1,581

Bottled/LP Gas

1.5%244

No Fuel

0.7%106

Other

0.5%82

Fuel Oil

0.1%10

Economyi

Median Household Incomei

$129,395

Mean Household Incomei

$164,157

Per Capita Incomei

$62,568

Poverty Ratei

7.2%

Unemploymenti

2.7%

Labor Forcei

23,418

Household Income Distribution

Under $10K

4.5%737

$10K–$15K

1.2%187

$15K–$20K

1.4%231

$20K–$25K

2.2%356

$25K–$30K

2.2%356

$30K–$35K

1.5%237

$35K–$40K

1.7%282

$40K–$45K

0.7%114

$45K–$50K

1.2%202

$50K–$60K

5%808

$60K–$75K

5.7%922

$75K–$100K

9.9%1,609

$100K–$125K

11.2%1,811

$125K–$150K

10.6%1,711

$150K–$200K

13.4%2,174

$200K+

27.6%4,476

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

293

Residentsi

418

Avg. Tenant Renti

$373/mo

Programs in this community

Housing Choice Vouchers200 homes86% occupied$396/mo rent

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

Project Based Section 893 homes95% occupied$322/mo rent

Privately owned apartments with rent subsidies tied to the building

Household Incomei

Based on area median of $129,395/yr

Extremely low incomeUnder $39K/yr

92.5%

Very low income$39K–$65K/yr

5.5%

Low income$65K–$104K/yr

Who Receives This Housing

75.7% of subsidized households are headed by a single mother

34.6% of subsidized households are minority

45.4% of subsidized households include someone with a disability

66.7% of subsidized households include a senior (62+)

Commute & Transportationi

Workersi

22,447

Avg. Commutei

26.3 min

How People Get to Work

Travel Time to Work

Workforce

Total Employed

22,771

Occupations

Industries

Social Characteristicsi

Marital Status (15+)i

Veteransi

818(2.5% of civilian adults)