St. Clair township is located in Monona County, Iowa. St. Clair township has a 2025 population of 488. St. Clair township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The average household income in St. Clair township is $71,496 with a poverty rate of 9.02%.The median age in St. Clair township is 41.3 years: 41.5 years for males, and 39.5 years for females.
Data after 2023 is projected based on recent change
The racial composition of St. Clair township includes 99.8% White, and smaller percentages for Two or more races and multiracial populations.
Race | Population | Percentage (of total) |
---|---|---|
White | 487 | 99.8% |
Two or more races | 1 | 0.2% |
Married
Widowed
Divorced
Separated
Never Married
St. Clair township's average per capita income is $48,024. Household income levels show a median of $55,455. The poverty rate stands at 9.02%.
Name | Median | Mean |
---|---|---|
Married Families | $108,269 | - |
Families | $66,250 | $84,965 |
Households | $55,455 | $71,496 |
Non Families | $35,811 | $58,705 |
Average Income
Median Household Income
Poverty Rate