
Newport township
- County:
- Marshall County
- County Seat:
- No
- Area (mi²):
- 34.996
- State:
- South Dakota
Newport township is located in Marshall County, South Dakota. Newport township has a 2025 population of 62. Newport township is currently declining at a rate of 0% annually and its population has increased by 3.33% since the most recent census, which recorded a population of 60 in 2020.
The average household income in Newport township is $61,687 with a poverty rate of 0%. The median age in Newport township is 29.8 years: 63.1 years for males, and 19.8 years for females.