La Valley township
- County:
- Lincoln County
- County Seat:
- No
- Area (mi²):
- 34.546
- State:
- South Dakota
La Valley township is located in Lincoln County, South Dakota. La Valley township has a 2026 population of 673. La Valley township is currently growing at a rate of 0.75% annually and its population has increased by 0.75% since the most recent census, which recorded a population of 668 in 2020.
The median household income in La Valley township is $135,489 with a poverty rate of 5.22%. The median age in La Valley township is 55 years: 57 years for males, and 51.1 years for females. For every 100 females there are 79.1 males.