
Calmar township
- County:
- Winneshiek County
- County Seat:
- No
- Area (mi²):
- 35.71
- State:
- Iowa
Calmar township is located in Winneshiek County, Iowa. Calmar township has a 2025 population of 1,889. Calmar 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 Calmar township is $95,470 with a poverty rate of 9.05%. The median age in Calmar township is 41.5 years: 39.8 years for males, and 44.1 years for females.