There are a total of 62 counties in the state of New York. Among them, Albany County is the oldest one (established in 1683) while Bronx County is the youngest (established in 1914). With population of 2,504,700, Kings County is the most populated. The biggest county by land area is St. Lawrence County (7,306 km2) and the smallest is New York County (87 km2). Below please see all New York counties which are listed in alphabetical order.
- Albany County, NY
- Allegany County, NY
- Bronx County, NY
- Broome County, NY
- Cattaraugus County, NY
- Cayuga County, NY
- Chautauqua County, NY
- Chemung County, NY
- Chenango County, NY
- Clinton County, NY
- Columbia County, NY
- Cortland County, NY
- Delaware County, NY
- Dutchess County, NY
- Erie County, NY
- Essex County, NY
- Franklin County, NY
- Fulton County, NY
- Genesee County, NY
- Greene County, NY
- Hamilton County, NY
- Herkimer County, NY
- Jefferson County, NY
- Kings County, NY
- Lewis County, NY
- Livingston County, NY
- Madison County, NY
- Monroe County, NY
- Montgomery County, NY
- Nassau County, NY
- New York County, NY
- Niagara County, NY
- Oneida County, NY
- Onondaga County, NY
- Ontario County, NY
- Orange County, NY
- Orleans County, NY
- Oswego County, NY
- Otsego County, NY
- Putnam County, NY
- Queens County, NY
- Rensselaer County, NY
- Richmond County, NY
- Rockland County, NY
- Saint Lawrence County, NY
- Saratoga County, NY
- Schenectady County, NY
- Schoharie County, NY
- Schuyler County, NY
- Seneca County, NY
- Steuben County, NY
- Suffolk County, NY
- Sullivan County, NY
- Tioga County, NY
- Tompkins County, NY
- Ulster County, NY
- Warren County, NY
- Washington County, NY
- Wayne County, NY
- Westchester County, NY
- Wyoming County, NY
- Yates County, NY