Greenfield township
- County:
- Elk County
- County Seat:
- No
- Area (mi²):
- 65.831
- State:
- Kansas
Greenfield township is located in Elk County, Kansas. Greenfield township has a 2026 population of 251. Greenfield township is currently declining at a rate of -1.57% annually and its population has decreased by -0.79% since the most recent census, which recorded a population of 253 in 2020.
The median household income in Greenfield township is $75,417 with a poverty rate of 10.42%. The median age in Greenfield township is 45.4 years: 36.3 years for males, and 46.6 years for females. For every 100 females there are 61.1 males.