West Hanson township
- County:
- Brown County
- County Seat:
- No
- Area (mi²):
- 35.948
- State:
- South Dakota
West Hanson township is located in Brown County, South Dakota. West Hanson township has a 2025 population of 44. West Hanson township is currently declining at a rate of -2.22% annually and its population has decreased by -8.33% since the most recent census, which recorded a population of 48 in 2020.