Wonder Lake is a village located in McHenry County, Illinois. Wonder Lake has a 2026 population of 5,959. Wonder Lake is currently growing at a rate of 5.9% annually and its population has increased by 50.1% since the most recent census, which recorded a population of 3,970 in 2020.
The median household income in Wonder Lake is $94,655 with a poverty rate of 2.85%. The median age in Wonder Lake is 33.8 years: 33.4 years for males, and 40 years for females. For every 100 females there are 107.5 males.
Data after 2023 is projected based on recent change
Overall: 33.8 years
Female: 40 years
Male: 33.4 years
There are 3,241 adults, (578 of whom are seniors) in Wonder Lake.
Female: 2,068 (48.2%)
Male: 2,224 (51.8%)
The racial composition of Wonder Lake includes 78.82% White, 4.05% other race, and smaller percentages for Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 3,383 | 78.82% |
| Two or more races | 698 | 16.26% |
| Other race | 174 | 4.05% |
| Asian | 37 | 0.86% |
Wonder Lake 's average per capita income is $71,895. Household income levels show a median of $94,655. The poverty rate stands at 2.85%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $113,307 | - |
| Families | $111,538 | $121,224 |
| Households | $94,655 | $127,103 |
| Non Families | $77,708 | $146,606 |
Average Income
Median Household Income
Poverty Rate