
Black Hawk township
- County:
- Grundy County
- County Seat:
- No
- Area (mi²):
- 36.205
- State:
- Iowa
Black Hawk township is located in Grundy County, Iowa. Black Hawk township has a 2025 population of 1,998. Black Hawk 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 Black Hawk township is $96,407 with a poverty rate of 4.32%. The median age in Black Hawk township is 44.2 years: 41.9 years for males, and 45 years for females.