There is also a Jefferson County, New York, USA. Jefferson, New York — Town — Jefferson, New York is located in New YorkJefferson, New YorkJefferson, New York Coordinates: {{#invoke:Coordinates|coord}}{{#coordinates:42|29|55|N|74|36|6|W|type:city(1285)_region:US-NY | |name= }} Country United States State New York County Schoharie Area • Total 43.4 sq mi (112.5 km) • Land 43.3 sq mi (112.2 km) • Water 0.1 sq mi (0.3 km) Elevation 1,991 ft (607 m) Population • Total 1,285 • Density 29.7/sq mi (11.5/km) Time zone Eastern (EST) • Summer EDT ZIP code 12093 Area code(s) 607 FIPS code 36-38440 GNIS feature ID 0979106 Jefferson is a town in Schoharie County, New York, USA. The population was 1,285 at the 2000 census. The Town of Jefferson is on the southwestern border of the county and is east of the City of Oneonta.