Monroe County's estimated 2026 population is 34,575 with a growth rate of -0.76% in the past year according to the most recent United States census data. Monroe County is the 40th largest county in Illinois. The 2010 population was 33,051 and has seen a growth of 4.61% since that time.
Data after 2023 is projected based on recent change
Overall: 43.2 years
Female: 44.2 years
Male: 42.5 years
There are 27,385 adults, (6,913 of whom are seniors) in Monroe County.
Female: 17,461 (49.8%)
Male: 17,575 (50.2%)
The racial composition of Monroe County includes 96.02% White, and smaller percentages for Two or more races, Asian, Black or African American, other race, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 33,641 | 96.02% |
| Two or more races | 751 | 2.14% |
| Asian | 209 | 0.6% |
| Black or African American | 207 | 0.59% |
| Other race | 194 | 0.55% |
| Native American | 34 | 0.1% |
Monroe County's average per capita income is $64,693. Household income levels show a median of $102,880. The poverty rate stands at 5.02%.
Name | Median | Mean |
|---|---|---|
| Married Families | $139,795 | - |
| Families | $128,097 | $147,299 |
| Households | $102,880 | $123,402 |
| Non Families | $48,705 | $57,964 |
Average Income
Median Household Income
Poverty Rate
