Raritan township
- County:
- Day County
- County Seat:
- No
- Area (mi²):
- 34.693
- State:
- South Dakota
Raritan township is located in Day County, South Dakota. Raritan township has a 2026 population of 76. Raritan township is currently growing at a rate of 2.7% annually and its population has increased by 2.7% since the most recent census, which recorded a population of 74 in 2020.
The median age in Raritan township is 15.8 years: 32.5 years for males, and 0 years for females. For every 100 females there are 200.0 males.