Spring Lake township is located in Tazewell County, Illinois. Spring Lake township has a 2026 population of 1,658. Spring Lake township is currently growing at a rate of 0.18% annually but its population has decreased by -0.84% since the most recent census, which recorded a population of 1,672 in 2020.
The median household income in Spring Lake township is $86,685 with a poverty rate of 4.24%. The median age in Spring Lake township is 45.7 years: 47.7 years for males, and 43.8 years for females. For every 100 females there are 88.0 males.
Data after 2023 is projected based on recent change
Overall: 45.7 years
Female: 43.8 years
Male: 47.7 years
There are 1,270 adults, (343 of whom are seniors) in Spring Lake township.
Female: 882 (53.2%)
Male: 776 (46.8%)
The racial composition of Spring Lake township includes 92.16% White, and smaller percentages for other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 1,528 | 92.16% |
| Two or more races | 84 | 5.07% |
| Other race | 46 | 2.77% |
Spring Lake township 's average per capita income is $54,803. Household income levels show a median of $86,685. The poverty rate stands at 4.24%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $93,571 | - |
| Families | $93,217 | $108,466 |
| Households | $86,685 | $99,158 |
| Non Families | $46,964 | $60,018 |
Average Income
Median Household Income
Poverty Rate