Spring township is located in Boone County, Illinois. Spring township has a 2026 population of 859. Spring township is currently growing at a rate of 0.12% annually but its population has decreased by -1.04% since the most recent census, which recorded a population of 868 in 2020.
The median household income in Spring township is $135,595 with a poverty rate of 16.35%. The median age in Spring township is 37.3 years: 38.8 years for males, and 36.5 years for females. For every 100 females there are 106.3 males.
Data after 2023 is projected based on recent change
Overall: 37.3 years
Female: 36.5 years
Male: 38.8 years
There are 696 adults, (277 of whom are seniors) in Spring township.
Female: 489 (48.5%)
Male: 520 (51.5%)
The racial composition of Spring township includes 100% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 1,009 | 100% |
Spring township 's average per capita income is $81,544. Household income levels show a median of $135,595. The poverty rate stands at 16.35%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $153,438 | - |
| Households | $135,595 | $105,599 |
| Families | $133,750 | $140,068 |
| Non Families | $11,163 | - |
Average Income
Median Household Income
Poverty Rate