The community is located along New York State Route 26, 14.6 miles (23.5 km) west of Sherburne.

South Otselic has a post office with ZIP code 13155, which opened on April 17, 1830.

The community is located along New York State Route 26 14.6 miles (23.5 km) west of Sherburne.

South Otselic has a post office with ZIP code 13155, which opened on April 17, 1830.

The Mammoth was a large store owned by Frank Cox that drew customers from all over Central New York.