
Sumner township
- County:
- Osborne County
- County Seat:
- No
- Area (mi²):
- 53.636
- State:
- Kansas
Sumner township is located in Osborne County, Kansas. Sumner township has a 2025 population of 145. Sumner township is currently declining at a rate of -1.36% annually and its population has decreased by -5.23% since the most recent census, which recorded a population of 153 in 2020.
The average household income in Sumner township is $70,234 with a poverty rate of 18.93%. The median age in Sumner township is 40.3 years: 29.6 years for males, and 57.7 years for females.