Alexander County's 2026 population is estimated at 4,336, reflecting a -2.89% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Alexander County is the 99th largest county in Illinois. The 2010 population was 8,205 and has grown -47.15% since 2010.
Data after 2023 is projected based on recent change
Overall: 48 years
Female: 49.4 years
Male: 44.8 years
There are 3,835 adults, (1,215 of whom are seniors) in Alexander County.
Female: 2,483 (50.9%)
Male: 2,392 (49.1%)
The racial composition of Alexander County includes 62.95% White, 33.15% Black or African American, and smaller percentages for Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 3,069 | 62.95% |
| Black or African American | 1,616 | 33.15% |
| Two or more races | 169 | 3.47% |
| Asian | 21 | 0.43% |
Alexander County 's average per capita income is $42,836. Household income levels show a median of $47,043. The poverty rate stands at 19.02%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $86,471 | - |
| Families | $68,958 | $91,681 |
| Households | $47,043 | $68,282 |
| Non Families | $22,462 | $30,710 |
Average Income
Median Household Income
Poverty Rate
