Clear Lake is located in Sangamon County, Illinois. Clear Lake has a 2025 population of 8,278 . Clear Lake is currently growing at a rate of 0.01% annually but its population has decreased by -1.15% since the most recent census, which recorded a population of 8,374 in 2020.
The average household income in Clear Lake is $92,456 with a poverty rate of 9.8%. The median age in Clear Lake is 45.8 years: 40.6 years for males, and 51 years for females. For every 100 females there are 108.5 males.
Data after 2023 is projected based on recent change
The racial composition of Clear Lake includes 94.94% White, and smaller percentages for other race, Asian and multiracial populations.
White (94.94%)
Two or more races (3.75%)
Other race (0.84%)
Asian (0.47%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 7,902 | 94.94% |
| Two or more races | 312 | 3.75% |
| Other race | 70 | 0.84% |
| Asian | 39 | 0.47% |
Married
Widowed
Divorced
Separated
Never Married
Clear Lake's average per capita income is $48,233. Household income levels show a median of $78,542. The poverty rate stands at 9.8%.
Name | Median | Mean |
|---|---|---|
| Married Families | $102,750 | - |
| Families | $88,633 | $104,383 |
| Households | $78,542 | $92,456 |
| Non Families | $41,650 | $65,089 |
Average Income
Median Household Income
Poverty Rate