
Oak township
- County:
- Smith County
- County Seat:
- No
- Area (mi²):
- 35.844
- State:
- Kansas
Oak township is located in Smith County, Kansas. Oak township has a 2025 population of 247. Oak township is currently growing at a rate of 0.82% annually and its population has increased by 2.49% since the most recent census, which recorded a population of 241 in 2020.
The average household income in Oak township is $52,143 with a poverty rate of 5.56%. The median age in Oak township is 59.8 years: 54.5 years for males, and 60.4 years for females.