Green Lake County's estimated 2026 population is 19,278 with a growth rate of -0.14% in the past year according to the most recent United States census data. Green Lake County is the 55th largest county in Wisconsin. The 2010 population was 19,016 and has seen a growth of 1.38% since that time.
Data after 2023 is projected based on recent change
Overall: 45.6 years
Female: 46.5 years
Male: 44.8 years
There are 15,088 adults, (4,527 of whom are seniors) in Green Lake County.
Female: 9,632 (50%)
Male: 9,631 (50%)
The racial composition of Green Lake County includes 91.58% White, and smaller percentages for other race, Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 17,641 | 91.58% |
| Two or more races | 748 | 3.88% |
| Other race | 427 | 2.22% |
| Asian | 219 | 1.14% |
| Black or African American | 135 | 0.7% |
| Native American | 79 | 0.41% |
| Native Hawaiian or Pacific Islander | 14 | 0.07% |
Green Lake County's average per capita income is $48,526. Household income levels show a median of $68,196. The poverty rate stands at 13.77%.
Name | Median | Mean |
|---|---|---|
| Married Families | $98,909 | - |
| Families | $87,421 | $107,561 |
| Households | $68,196 | $91,125 |
| Non Families | $43,546 | $59,225 |
Average Income
Median Household Income
Poverty Rate