Macoupin County, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 32nd-largest in Illinois
The population of Macoupin County, Illinois is 44,566 as of the 2023 American Community Survey, making it the 32nd-largest county in Illinois. The median household income is $68,518, the median home value is $126,100, and the median age is 44.3.
The population of Macoupin County has declined 8.2% since 2010 (47,798 → 43,895), a -0.61% annualized rate.
44,566
Population
-0.61%
Annual growth
52
People / sq mi
$68,518
Median Income
$126,100
Median Home Value
Macoupin County covers 863 sq mi of land at 51.6 people per square mile.
About Macoupin County, IL
Macoupin County is a county in Illinois with a population of 44,566. It ranks #32 among counties in Illinois by population. The median age is 44.3, older than the national median. The population is 49.5% male and 50.5% female.
The median household income in Macoupin County is $68,518, below the US median of $74,580. 10.9% of residents live below the federal poverty level. Home values sit at a median of $126,100, with monthly rent averaging $789. The homeownership rate of 77.7% is higher than the national rate of 64.8%.
Educational attainment in Macoupin County reflects 18.8% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.9% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 27.8 minutes each way.
Macoupin County Population History (2010-2024)
The county of Macoupin County had a population of 47,798 in 2010 and 43,895 in 2024, a -8.2% growth over 14 years. The peak was 47,798 in 2010. Average annual growth rate: -0.61%.
43,895
Population (2024)
47,798
Population (2010)
47,798
Peak (2010)
-0.61%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 47,798 |
| 2011 | 47,742 |
| 2012 | 47,058 |
| 2013 | 46,685 |
| 2014 | 46,216 |
| 2015 | 45,887 |
| 2016 | 45,708 |
| 2017 | 45,521 |
| 2018 | 45,342 |
| 2019 | 45,079 |
| 2020 | 44,924 |
| 2021 | 44,563 |
| 2022 | 44,239 |
| 2023 | 44,127 |
| 2024 | 43,895 |
Race & Ethnicity
| White | 94.6% |
| Black or African American | 1.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.8% |
| Two or More Races | 0.0% |
Age & Sex
44.3
Median Age
50.5%
Female
49.5%
Male
21.1%
Age 65+
Age Distribution
Children (under 15): 16.8% · Seniors (65+): 21.1%
Income & Poverty
| Median household income | $68,518$-13,184 vs state |
| Mean household income | $85,962 |
| Per-capita income | $35,389 |
| Poverty rate | 10.9%+2.7% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 54.6% |
Top Industries by Employment
The largest employment sector in Macoupin County is professional & business services, accounting for 21.6% of workers.
How residents commute
0.2%
Drive alone
2.5%
Carpool
83.8%
Public transit
7.9%
Work from home
27.8 min
Avg commute
Housing
$126,100$-124,400 vs state
Median home value
$789
Median rent
77.7%
Homeownership rate
21,108
Total housing units
82.6%
Occupied
17.4%
Vacant
22.3%
Renter-occupied
Social & access
95.7%
With health insurance
91.2%
With broadband internet
15.7%
Foreign-born
7.8%
Veterans (18+)
16.9%
With a disability
98.7%
Speak language other than English at home
Education
90.8%
High School+
18.8%
Bachelor's+
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Frequently Asked Questions
Macoupin County, Illinois has a population of 44,566 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 32nd-largest county in Illinois. Population density is 52 people per square mile.
The population of Macoupin County has declined 8.2% since 2010 (47,798 → 43,895), a -0.61% annualized rate.
The median household income in Macoupin County, Illinois is $68,518, with mean (average) household income of $85,962 and per-capita income of $35,389. 10.9% of residents live below the federal poverty level.
In Macoupin County, the largest racial and ethnic groups are White (94.6%), Black or African American (1.2%), Hispanic or Latino (0.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Macoupin County, Illinois is 44.3 years. Residents are 50.5% female and 49.5% male.
The median home value in Macoupin County is $126,100 and median monthly rent is $789. 77.7% of occupied housing units are owner-occupied. The county has 21,108 total housing units, 17.4% of which are vacant.
The largest employment sector in Macoupin County, Illinois is professional, scientific, and management services, employing 21.6% of workers. The unemployment rate is 2.5%.
Chicago is among the largest cities associated with Macoupin County, Illinois, with a population of 2,707,648.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.