Lynn
- County:
- Moody County
- County Seat:
- No
- Area (mi²):
- 35.905
- State:
- South Dakota
Lynn is located in Moody County, South Dakota. Lynn has a 2025 population of 283 . Lynn is currently growing at a rate of 1.8% annually and its population has increased by 2.91% since the most recent census, which recorded a population of 275 in 2020.
The median age in Lynn is 40.9 years: 40.2 years for males, and 57.3 years for females. For every 100 females there are 198.9 males.