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.

South Barrington, IL Population, Income & Demographics 2026

CSAChicago-Naperville MSAChicago-Naperville-Elgin#9/303 Home Value

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

5,021

Median Agei

50.1

Race & Ethnicityi

White

48.4%2,432

Asian

46.9%2,354

Two or More

3.5%176

Black

0.8%38

Hispanic/Latino

0.4%21

Educational Attainment (Age 25+)i

GED/Alternative

0.2%8

High School Diploma

8.1%282

Some College (<1 yr)

1.3%47

Some College (1+ yr)

6.1%212

Associate's Degree

5.6%195

Bachelor's Degree

30.1%1,053

Master's Degree

23.6%826

Professional Degree

16.7%586

Doctorate

3.2%112

HS or Higher

94.9%

BA or Higher

73.6%

Graduate+

43.5%

Housingi

Median Home Valuei

$908,300

Median Renti

$2,200

Tenure

Owner-Occupied

98.2%1,633

Renter-Occupied

1.8%30

Total Units

1,680

Homeownership

98.2%

Vacancy Rate

Home Values

Under $50K

1.7%28

$50K–$100K

2.6%43

$200K–$300K

2.7%44

$300K–$500K

3.2%53

$500K–$1M

49.8%814

$1M+

39.9%651

Rent Distribution

$1,500–$2,000

$2,000+

Year Built

2020 or later

0.3%5

2010–2019

11.1%186

2000–2009

25.1%422

1990–1999

27.6%463

1980–1989

23.5%394

1970–1979

8.2%138

1960–1969

0.8%13

1939 or earlier

3.5%59

Heating Fuel

Utility Gas

98.5%1,638

Electricity

1.5%25

Economyi

Median Household Incomei

$221,575

Mean Household Incomei

$301,587

Per Capita Incomei

$99,079

Poverty Ratei

Unemploymenti

Labor Forcei

2,371

Household Income Distribution

Under $10K

2.6%44

$25K–$30K

2%34

$30K–$35K

0.5%9

$35K–$40K

1.1%19

$40K–$45K

2.5%42

$45K–$50K

4%66

$75K–$100K

2.5%42

$100K–$125K

6%100

$125K–$150K

7.5%125

$150K–$200K

16.8%280

$200K+

54.2%902

Commute & Transportationi

Workersi

2,253

Avg. Commutei

29 min

How People Get to Work

Travel Time to Work

Workforce

Total Employed

2,324

Occupations

Industries

Social Characteristicsi

Marital Status (15+)i

Veteransi

95(2.5% of civilian adults)