South Lansing, New York
Census-designated place
South Lansing Show map of New York South Lansing Show map of the United States
Coordinates: 42°32′16″N 76°30′21″W / 42.53778°N 76.50583°W / 42.53778; -76.50583
Country	United States
State	New York
County	Tompkins
Town	Lansing
Area [1]
• Total	2.76 sq mi (7.16 km2)
• Land	2.76 sq mi (7.15 km2)
• Water	0.00 sq mi (0.01 km2)
Elevation	842 ft (257 m)
Population  (2020)
• Total	1,078
• Density	390.44/sq mi (150.77/km2)
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
ZIP Code	14882 (Lansing)
Area code	607
FIPS code	36-69342
GNIS feature ID	2806984[2]

South Lansing is a census-designated place (CDP) in the town of Lansing, Tompkins County, New York, United States. The CDP includes the hamlets of South Lansing, Terpening Corners, and Asbury. The area was first listed as a CDP prior to the 2020 census.^[2]

The community is in northern Tompkins County, southeast of the geographic center of the town of Lansing. It is the location of the Lansing Town Hall. New York State Route 34 passes through the community, leading north 30 miles (48 km) to Auburn and south through the village of Lansing 7 miles (11 km) to Ithaca. State Route 34B joins Route 34 briefly in South Lansing but heads east 7 miles (11 km) to Route 38 between Groton and Freeville, while to the west it soon turns and runs parallel to Route 34, rejoining it in Fleming.