With 14,894 people, Macomb is a city in Illinois. This skews young, with a median age of 27.6. 66% were living in the same home a year earlier. That trails the Illinois median by roughly 47%. The typical home is worth $103,300, having risen by half since 2000. 49% of homes are owner-occupied.
At a glance
Lower income
median household income $44,411, below the US median
US median: $82,259
Younger
median age 27.6
US median: 38.9
Average education
35% hold a bachelor's degree
US average: 36%
More affordable
home values down 15%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Macomb
What changed most since 1990
Population19,952 → 14,894(−25%)US over the same years: +35%
Adults with a bachelor's degree31.5% → 35.4%(+3.9 pts)US over the same years: +15.3 pts
White share88.5% → 78.6%(−9.9 pts)US over the same years: −17.8 pts
Macomb's population equals 55% of McDonough County's. Its number of residents living in poverty equals 81% of the county's. Its number of veterans equals 39% of the county's.
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)32.2%(145)
US avg: 26.4%
Gulf War (1990s)19.7%(89)
US avg: 24.3%
Vietnam era22.6%(102)
US avg: 33.1%
Korean War8.9%(40)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 451 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
Macomb, decade by decade
Macomb 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
19,952
$44,531
$103,203
31.5%
26.5
2000
18,558
$47,352
$121,504
35.3%
28.6
2010
19,288
$35,353
$127,314
40.0%
36.4
2020
15,051
$41,775
$119,749
40.1%
48.0
2024
14,894
$44,411
$103,300
35.4%
46.0
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.
