
Sioux township
- County:
- Plymouth County
- County Seat:
- No
- Area (mi²):
- 44.123
- State:
- Iowa
Sioux township is located in Plymouth County, Iowa. Sioux township has a 2025 population of 194. Sioux township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The average household income in Sioux township is $61,796 with a poverty rate of 0%. The median age in Sioux township is 62.2 years: 62.2 years for males, and 0 years for females.