
Letcher township
- County:
- Sanborn County
- County Seat:
- No
- Area (mi²):
- 35.419
- State:
- South Dakota
Letcher township is located in Sanborn County, South Dakota. Letcher township has a 2025 population of 125. Letcher township is currently declining at a rate of 0% annually and its population has increased by 3.31% since the most recent census, which recorded a population of 121 in 2020.
The average household income in Letcher township is $118,176 with a poverty rate of 0%. The median age in Letcher township is 45 years: 51.3 years for males, and 40.3 years for females.