
Hartley township
- County:
- O'Brien County
- County Seat:
- No
- Area (mi²):
- 34.905
- State:
- Iowa
Hartley township is located in O'Brien County, Iowa. Hartley township has a 2025 population of 1,882. Hartley 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 Hartley township is $67,846 with a poverty rate of 13.1%. The median age in Hartley township is 45.7 years: 41.2 years for males, and 50.6 years for females.