Oak Valley township
- County:
- Elk County
- County Seat:
- No
- Area (mi²):
- 44.567
- State:
- Kansas
Oak Valley township is located in Elk County, Kansas. Oak Valley township has a 2026 population of 84. Oak Valley township is currently declining at a rate of -1.18% annually and its population has decreased by -1.18% since the most recent census, which recorded a population of 85 in 2020.
The median household income in Oak Valley township is $34,688 with a poverty rate of 8.91%. The median age in Oak Valley township is 56.9 years: 55.3 years for males, and 60.2 years for females. For every 100 females there are 146.3 males.