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 2026 population of 63. Newport township is currently growing at a rate of 1.61% annually and its population has increased by 6.78% since the most recent census, which recorded a population of 59 in 2020.
The median household income in Newport township is $70,938 with a poverty rate of 0%. The median age in Newport township is 63.4 years: 66.3 years for males, and 54.3 years for females. For every 100 females there are 61.1 males.