Harlan township
- County:
- Decatur County
- County Seat:
- No
- Area (mi²):
- 35.628
- State:
- Kansas
Harlan township is located in Decatur County, Kansas. Harlan township has a 2026 population of 35. Harlan township is currently declining at a rate of -2.78% annually and its population has decreased by -2.78% since the most recent census, which recorded a population of 36 in 2020.
The median age in Harlan township is 61.2 years: 0 years for males, and 0 years for females. For every 100 females there are 225.0 males.