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 distinguished by its share of foreign-born residents, 15.7% of the population. Macoupin County is a county in Illinois with a population of 44,566. It ranks #32 among counties in Illinois by population.
The typical household here earns about $68,518, below the US median of $78,538. The poverty rate is 10.9%, below the national 12.4%. Housing is relatively affordable, with a median home value of $126,100, with typical rent around $789.
Roughly 18.8% of adults have a bachelor’s, below the national 35.0%. About 7.9% of the workforce is home-based, below the national 14.0%, and the average commute runs about 28 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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Population, race, income, age, and trends across Illinois
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.