Cook township
- County:
- Decatur County
- County Seat:
- No
- Area (mi²):
- 35.872
- State:
- Kansas
Cook township is located in Decatur County, Kansas. Cook township has a 2026 population of 20. Cook 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 20 in 2020.