Vienna township is located in Johnson County, Illinois. Vienna township has a 2026 population of 674. Vienna township is currently growing at a rate of 0.3% annually and its population has increased by 2.28% since the most recent census, which recorded a population of 659 in 2020.
The median household income in Vienna township is $98,594 with a poverty rate of 8.17%. The median age in Vienna township is 48 years: 44.9 years for males, and 49.4 years for females. For every 100 females there are 99.3 males.
Data after 2023 is projected based on recent change
Overall: 48 years
Female: 49.4 years
Male: 44.9 years
There are 468 adults, (121 of whom are seniors) in Vienna township.
Female: 301 (50.2%)
Male: 299 (49.8%)
The racial composition of Vienna township includes 92.83% White, and smaller percentages for other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 557 | 92.83% |
| Two or more races | 40 | 6.67% |
| Other race | 3 | 0.5% |
Vienna township 's average per capita income is $53,125. Household income levels show a median of $98,594. The poverty rate stands at 8.17%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $132,609 | - |
| Families | $128,542 | $125,208 |
| Households | $98,594 | $97,519 |
| Non Families | $41,250 | $43,045 |
Average Income
Median Household Income
Poverty Rate