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.

Markham, IL Population, Income & Demographics 2026

CSAChicago-Naperville MSAChicago-Naperville-Elgin#146/303 Population

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

11,355

Median Agei

34.2

Race & Ethnicityi

Black

70.4%7,994

Hispanic/Latino

17.8%2,025

White

9.2%1,047

Two or More

2.1%243

Asian

0.4%46

Educational Attainment (Age 25+)i

GED/Alternative

4.5%328

High School Diploma

30.5%2,198

Some College (<1 yr)

7.4%534

Some College (1+ yr)

18.3%1,320

Associate's Degree

9.1%656

Bachelor's Degree

12.6%906

Master's Degree

4.2%305

Professional Degree

0.2%12

Doctorate

0.7%54

HS or Higher

87.5%

BA or Higher

17.7%

Graduate+

5.1%

Housingi

Median Home Valuei

$135,300

Median Renti

$1,621

Tenure

Owner-Occupied

74.9%2,739

Renter-Occupied

25.1%916

Total Units

3,954

Homeownership

74.9%

Vacancy Rate

7.6%

Home Values

Under $50K

7.7%211

$50K–$100K

26.8%734

$100K–$150K

23.4%641

$150K–$200K

16.2%443

$200K–$300K

22.8%624

$300K–$500K

0.3%9

$500K–$1M

1.4%38

$1M+

1.4%39

Rent Distribution

$500–$750

$750–$1,000

$1,000–$1,250

$1,250–$1,500

150

$1,500–$2,000

320

$2,000+

209

Year Built

2010–2019

3.6%144

2000–2009

9.9%391

1990–1999

1.8%71

1980–1989

3%119

1970–1979

17.9%707

1960–1969

23.3%921

1950–1959

27.8%1,099

1940–1949

7.1%280

1939 or earlier

5.6%222

Heating Fuel

Utility Gas

96.2%3,517

Electricity

2.5%90

Solar

0.7%25

No Fuel

0.4%13

Bottled/LP Gas

0.3%10

Economyi

Median Household Incomei

$57,302

Mean Household Incomei

$76,682

Per Capita Incomei

$25,372

Poverty Ratei

17.8%

Unemploymenti

8.7%

Labor Forcei

5,090

Household Income Distribution

Under $10K

8.5%311

$10K–$15K

3.6%130

$15K–$20K

7.1%261

$20K–$25K

1.8%66

$25K–$30K

2.1%77

$30K–$35K

1.9%70

$35K–$40K

3.3%120

$40K–$45K

6.5%238

$45K–$50K

3.6%130

$50K–$60K

13.1%478

$60K–$75K

7.7%282

$75K–$100K

12.4%455

$100K–$125K

8.2%299

$125K–$150K

7.3%267

$150K–$200K

7.8%284

$200K+

5.1%187

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

532

Residentsi

1,738

Avg. Tenant Renti

$617/mo

Avg. Waitlisti

100 months

Programs in this community

Housing Choice Vouchers527 homes93% occupied$617/mo rent

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

Project Based Section 82 homes

Privately owned apartments with rent subsidies tied to the building

202/PRAC1 homes

Household Incomei

Based on area median of $57,302/yr

Extremely low incomeUnder $17K/yr

78%

Very low income$17K–$29K/yr

15%

Low income$29K–$46K/yr

Who Receives This Housing

94% of subsidized households are headed by a single mother

100% of subsidized households are minority

18% of subsidized households include someone with a disability

14% of subsidized households include a senior (62+)

Commute & Transportationi

Workersi

4,427

Avg. Commutei

35.7 min

How People Get to Work

Travel Time to Work

Workforce

Total Employed

4,647

Occupations

Industries

Social Characteristicsi

Marital Status (15+)i

Veteransi

316(3.8% of civilian adults)