Macoupin County's 2026 population is estimated at 43,431, reflecting a -0.53% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Macoupin County is the 32nd largest county in Illinois. The 2010 population was 47,798 and has grown -9.14% since 2010.
Data after 2023 is projected based on recent change
Overall: 44.2 years
Female: 45.4 years
Male: 42.4 years
There are 35,214 adults, (9,566 of whom are seniors) in Macoupin County.
Female: 22,426 (50.6%)
Male: 21,924 (49.4%)
The racial composition of Macoupin County includes 93.93% White, and smaller percentages for Black or African American, other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 41,656 | 93.93% |
| Two or more races | 1,563 | 3.52% |
| Black or African American | 654 | 1.47% |
| Other race | 291 | 0.66% |
| Asian | 130 | 0.29% |
| Native American | 50 | 0.11% |
| Native Hawaiian or Pacific Islander | 6 | 0.01% |
Macoupin County 's average per capita income is $50,512. Household income levels show a median of $70,805. The poverty rate stands at 13.06%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $109,941 | $121,007 |
| Families | $91,250 | $105,943 |
| Households | $70,805 | $90,728 |
| Non Families | $40,451 | $53,807 |
Average Income
Median Household Income
Poverty Rate