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.

Lemont, IL Population, Income & Demographics 2026

CSAChicago-Naperville MSAChicago-Naperville-Elgin#49/303 Home Value

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

17,820

Median Agei

43.7

Race & Ethnicityi

White

84.6%15,068

Hispanic/Latino

8.9%1,579

Asian

2.8%502

Two or More

2%353

Black

1.7%296

Other

0.1%22

Educational Attainment (Age 25+)i

GED/Alternative

2.1%257

High School Diploma

18.2%2,229

Some College (<1 yr)

8.1%992

Some College (1+ yr)

11.8%1,452

Associate's Degree

8.6%1,060

Bachelor's Degree

27.3%3,342

Master's Degree

16%1,965

Professional Degree

2.5%307

Doctorate

1.1%133

HS or Higher

95.7%

BA or Higher

46.9%

Graduate+

19.6%

Housingi

Median Home Valuei

$468,800

Median Renti

$1,209

Tenure

Owner-Occupied

87.6%5,617

Renter-Occupied

12.4%795

Total Units

6,645

Homeownership

87.6%

Vacancy Rate

3.5%

Home Values

Under $50K

0.8%46

$50K–$100K

0.5%26

$150K–$200K

0.4%25

$200K–$300K

9.3%520

$300K–$500K

46.4%2,605

$500K–$1M

39.3%2,207

$1M+

3.3%188

Rent Distribution

Under $500

$500–$750

$750–$1,000

106

$1,000–$1,250

218

$1,250–$1,500

$1,500–$2,000

$2,000+

265

Year Built

2020 or later

1.7%112

2010–2019

13.2%875

2000–2009

23.3%1,548

1990–1999

24.8%1,649

1980–1989

12.5%832

1970–1979

7.4%491

1960–1969

3.9%258

1950–1959

3.2%214

1940–1949

2.2%148

1939 or earlier

7.8%518

Heating Fuel

Utility Gas

95.3%6,108

Electricity

3.3%210

No Fuel

0.7%47

Other

0.5%29

Bottled/LP Gas

0.3%18

Economyi

Median Household Incomei

$123,370

Mean Household Incomei

$150,039

Per Capita Incomei

$54,818

Poverty Ratei

Unemploymenti

4.5%

Labor Forcei

8,755

Household Income Distribution

Under $10K

3.3%209

$10K–$15K

1%66

$15K–$20K

0.5%33

$20K–$25K

0.9%57

$25K–$30K

1.2%78

$30K–$35K

2%127

$35K–$40K

2.3%150

$40K–$45K

3.3%210

$45K–$50K

2.9%186

$50K–$60K

4.7%303

$60K–$75K

7.4%472

$75K–$100K

9.4%601

$100K–$125K

11.4%729

$125K–$150K

6.6%421

$150K–$200K

19.7%1,265

$200K+

23.5%1,505

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 Vouchers3 homes

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

Commute & Transportationi

Workersi

8,125

Avg. Commutei

34.8 min

How People Get to Work

Travel Time to Work

Workforce

Total Employed

8,357

Occupations

Industries

Social Characteristicsi

Marital Status (15+)i

Veteransi

655(4.9% of civilian adults)