South Kortright is a hamlet in Delaware County, New York, United States. The community is located along New York State Route 10, 11.1 miles east-northeast of Delhi. As of 2019 the hamlet has a population of 2349 and is 259.3 km2 in size. South Kortright has the ZIP code 13842. South Kortright Central School District, established in 1940, enrolls students from South Kortright as well as the neighboring village of Hobart and hamlet of Bloomville.