
South Lansing
- County:
- Tompkins County
- County Seat:
- No
- Area (mi²):
- 2.761
- State:
- New York
South Lansing is a CDP located in Tompkins County, New York. South Lansing has a 2025 population of 1,138. South Lansing is currently growing at a rate of 7.16% annually and its population has increased by 20.55% since the most recent census, which recorded a population of 944 in 2020.
The average household income in South Lansing is $151,248 with a poverty rate of 10.06%. The median age in South Lansing is 40 years: 40.1 years for males, and 31.6 years for females.