This index lumps Kings County (Brooklyn), New York County (Manhattan), Queens County, and Richmond County (Staten Island) into this heading of "New York City-Greater" at the county level, as opposed to listing each county separately.

Albany Formed: 1683 Parent: original county	Allegany Formed: 1806 Parent: Genesee	Bronx Formed: 1914 Parent: New York	Broome Formed: 1806 Parent: Tioga	Cattaraugus Formed: 1808 Parent: Genesee	Cayuga Formed: 1799 Parent: Onondaga
Charlotte Formed: 1772 Parent: Albany	Chautauqua Formed: 1808 Parent: Genesee	Chemung Formed: 1836 Parent: Tioga	Chenango Formed: 1798 Parent: Herkimer, Tioga	Clinton Formed: 1788 Parent: Washington	Columbia Formed: 1786 Parent: Albany
Cortland Formed: 1808 Parent: Onondaga	Delaware Formed: 1797 Parent: Ulster, Otsego	Dutchess Formed: 1683 Parent: original county	Erie Formed: 1821 Parent: Niagara	Essex Formed: 1799 Parent: Clinton	Franklin Formed: 1808 Parent: Clinton
Fulton Formed: 1838 Parent: Montgomery	Genesee Formed: 1802 Parent: Ontario	Greene Formed: 1800 Parent: Ulster, Albany	Hamilton Formed: 1816 Parent: Montgomery	Herkimer Formed: 1791 Parent: Montgomery	Jefferson Formed: 1805 Parent: Oneida
Kings Formed: 1683 Parent: Original county	Lewis Formed: 1805 Parent: Oneida	Livingston Formed: 1821 Parent: Genesee, Ontario	Madison Formed: 1806 Parent: Chenango	Monroe Formed: 1821 Parent: Genesee, Ontario	Montgomery Formed: 1772 Parent: Albany (as Tryon to 1784)
Nassau Formed: 1899 Parent: Queens	New York City Formed: 1683 Parent: Original county	Niagara Formed: 1808 Parent: Genesee	Oneida Formed: 1798 Parent: Herkimer	Onondaga Formed: 1794 Parent: Herkimer	Ontario Formed: 1789 Parent: Montgomery
Orange Formed: 1683 Parent: Original county	Orleans Formed: 1824 Parent: Genesee	Oswego Formed: 1816 Parent: Oneida, Onondaga	Otsego Formed: 1791 Parent: Montgomery	Putnam Formed: 1812 Parent: Dutchess	Queens Formed: 1683 Parent: Original county
Rensselaer Formed: 1791 Parent: Albany	Richmond (Staten Island) Formed: 1683 Parent: Original county	Rockland Formed: 1798 Parent: Orange	St. Lawrence Formed: 1802 Parent: Clinton, Herkimer, Montgomery	Saratoga Formed: 1791 Parent: Albany	Schenectady Formed: 1809 Parent: Albany
Schoharie Formed: 1795 Parent: Albany, Ostego	Schuyler Formed: 1854 Parent: Tompkins, Steuben, Chemung	Seneca Formed: 1804 Parent: Cayuga	Steuben Formed: 1796 Parent: Ontario	Suffolk Formed: 1683 Parent: Original county	Sullivan Formed: 1809 Parent: Ulster
Tioga Formed: 1791 Parent: Montgomery	Tompkins Formed: 1817 Parent: Cayuga, Seneca	Tryon Formed: 1772 Parent: Albany	Ulster Formed: 1683 Parent: Original county	Warren Formed: 1813 Parent: Washington	Washington Formed: 1772 Parent: Albany (see Charlotte)

Wayne Formed: 1823 Parent: Ontario, Seneca	Westchester Formed: 1683 Parent: Original county	Wyoming Formed: 1841 Parent: Genesee	Yates Formed: 1823 Parent: Ontario, Steuben