Brookside township is located in Clinton County, Illinois. Brookside township has a 2026 population of 4,443. Brookside township is currently growing at a rate of 0.29% annually and its population has increased by 0.2% since the most recent census, which recorded a population of 4,434 in 2020.
The median household income in Brookside township is $44,875 with a poverty rate of 25.29%. The median age in Brookside township is 43 years: 42 years for males, and 49.9 years for females. For every 100 females there are 202.1 males.
Data after 2023 is projected based on recent change
Overall: 43 years
Female: 49.9 years
Male: 42 years
There are 3,762 adults, (740 of whom are seniors) in Brookside township.
Female: 1,461 (33.1%)
Male: 2,952 (66.9%)
The racial composition of Brookside township includes 73.4% White, 19.49% Black or African American, and smaller percentages for Asian, other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 3,239 | 73.4% |
| Black or African American | 860 | 19.49% |
| Two or more races | 201 | 4.55% |
| Asian | 85 | 1.93% |
| Other race | 28 | 0.63% |
Brookside township 's average per capita income is $47,112. Household income levels show a median of $44,875. The poverty rate stands at 25.29%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $81,500 | - |
| Families | $60,441 | $89,318 |
| Households | $44,875 | $72,797 |
| Non Families | $35,096 | $50,318 |
Average Income
Median Household Income
Poverty Rate