Markham, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Markham, Illinois is 11,434 as of the 2023 American Community Survey, making it the 204th-largest city in Illinois. The median household income is $52,364, the median home value is $119,500, and the median age is 33.7.
The population has declined 10.0% since 2010 (12,546 → 11,290).
11,434
Population
2115
People / sq mi
$52,364
Median Income
$119,500
Median Home Value
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Markham covers 5.4 sq mi of land at 2115 people per square mile.
About Markham, IL
Housing cost is the defining feature of Markham: the median home is valued at $119,500. With 11,434 residents, Markham is a city in Illinois.
The typical household earns $52,364, below the US median of $78,538. Poverty is among the highest of comparable US cities: 19.8%, above the national 12.4%. Home prices sit near the bottom of the range at $119,500, with typical rent around $1,689.
Four-year-degree attainment is near the bottom of the range for US cities, 15.6%, below the national 35.0%. Remote work is below the national 14.0% at 11.0%, and the average commute runs about 34 minutes each way.
Markham city Population History (2010-2024)
The city of Markham city had a population of 12,546 in 2010 and 11,290 in 2024, a -10.0% growth over 14 years. The peak was 12,728 in 2014. Average annual growth rate: -0.74%.
11,290
Population (2024)
12,546
Population (2010)
12,728
Peak (2014)
-0.74%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 12,546 |
| 2011 | 12,616 |
| 2012 | 12,671 |
| 2013 | 12,716 |
| 2014 | 12,728 |
| 2015 | 12,690 |
| 2016 | 12,608 |
| 2017 | 12,512 |
| 2018 | 12,395 |
| 2019 | 12,314 |
| 2020 | 11,619 |
| 2021 | 11,408 |
| 2022 | 11,258 |
| 2023 | 11,216 |
| 2024 | 11,290 |
Race & Ethnicity
| White | 15.0% |
| Black or African American | 70.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.6% |
| Two or More Races | 0.0% |
Economy & Income
$52,364
Median Household Income
$25,122
Per Capita Income
19.8%
Poverty Rate
6.4%
Unemployment Rate
Housing
$119,500
Median Home Value
$1,689
Median Rent
72.0%
Owner-Occupied
Education
87.0%
High School+
15.6%
Bachelor's+
Commute
7.7%
Drive Alone
62.0%
Public Transit
11.0%
Work From Home
34.2 min
Avg Commute
Community Profile
13.2%
Foreign Born
86.6%
Non-English at Home
3.8%
Veterans
13.8%
With Disability
90.2%
Health Insurance
95.6%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 25.8% |
| Information | 12.2% |
| Retail Trade | 11.2% |
| Education, Health Care & Social Services | 8.9% |
| Manufacturing | 7.8% |
| Finance, Insurance & Real Estate | 7.3% |
| Construction | 6.8% |
| Public Administration | 4.1% |
| Arts, Entertainment & Food Services | 3.7% |
| Transportation & Warehousing | 0.2% |
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Frequently Asked Questions
Markham, Illinois has a population of 11,434 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 204th-largest city in Illinois.
The median household income in Markham, Illinois is $52,364, with 19.8% of residents living below the federal poverty level.
The median home value in Markham, Illinois is $119,500, with median monthly rent at $1,689 and a homeownership rate of 72.0%.
The median age in Markham, Illinois is 33.7 years. The population is 47.3% male and 52.7% female.
The population has declined 10.0% since 2010 (12,546 → 11,290).
Where to stay in Markham
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.