
South Londonderry
- County:
- Windham County
- County Seat:
- No
- Area (mi²):
- 0.622
- State:
- Vermont
South Londonderry is a CDP located in Windham County, Vermont. South Londonderry has a 2025 population of 268. South Londonderry is currently growing at a rate of 7.2% annually but its population has decreased by -7.9% since the most recent census, which recorded a population of 291 in 2020.
The average household income in South Londonderry is $90,447 with a poverty rate of 9.24%. The median age in South Londonderry is 46.7 years: 42 years for males, and 49.8 years for females.