Macomb is located in McDonough County, Illinois. Macomb has a 2025 population of 437 . It is also the county seat of McDonough County . Macomb is currently declining at a rate of -1.58% annually and its population has decreased by -3.53% since the most recent census, which recorded a population of 453 in 2020.
The average household income in Macomb is $85,584 with a poverty rate of 13.4%. The median age in Macomb is 56.1 years: 55.8 years for males, and 56.3 years for females. For every 100 females there are 109.2 males.
Data after 2023 is projected based on recent change
The racial composition of Macomb includes 98.59% White, and smaller percentages for Two or more races, Black or African American, other race and multiracial populations.
White (98.59%)
Two or more races (0.71%)
Black or African American (0.35%)
Other race (0.35%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 559 | 98.59% |
| Two or more races | 4 | 0.71% |
| Black or African American | 2 | 0.35% |
| Other race | 2 | 0.35% |
Married
Widowed
Divorced
Separated
Never Married
Macomb's average per capita income is $46,546. Household income levels show a median of $58,229. The poverty rate stands at 13.4%.
Name | Median | Mean |
|---|---|---|
| Married Families | $123,750 | - |
| Families | $100,208 | $114,118 |
| Households | $58,229 | $85,584 |
| Non Families | - | $45,480 |
Average Income
Median Household Income
Poverty Rate