With 11,355 people, Markham is a city in Illinois. Four-year degrees are less common here than nationally, at 18% of adults. The typical home is worth $135,300, having risen by half since 2000. This skews young, with a median age of 34.2. That trails the Illinois median by roughly 31%. 75% of homes are owner-occupied.
At a glance
Lower income
median household income $57,302, below the US median
US median: $82,259
Younger
median age 34.2
US median: 38.9
Less educated
18% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Markham
What changed most since 1990
Homes owned by their occupants87.6% → 74.9%(−12.7 pts)US over the same years: +0.9 pts
Population13,136 → 11,355(−14%)US over the same years: +35%
Median household income (2024 dollars)$74,961 → $57,302(−24%)US over the same years: +14%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)21.2%(67)
US avg: 26.4%
Gulf War (1990s)12.7%(40)
US avg: 24.3%
Vietnam era39.6%(125)
US avg: 33.1%
Korean War7%(22)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 316 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Markham, decade by decade
Markham population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
13,136
$74,961
$124,324
8.8%
46.0
2000
12,620
$75,766
$136,988
10.6%
44.5
2010
12,508
$62,338
$169,608
11.0%
42.0
2020
11,661
$50,966
$111,750
15.3%
55.4
2024
11,355
$57,302
$135,300
17.7%
57.9
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
