| Name | Created | County Seat | Webmaster | Location |
|---|---|---|---|---|
| Albany | 1683 | Albany | Open |  |
| Allegany | 1806 | Belmont | Open | 
|
| Bronx | 1914 | New York City (coextensive with The Bronx) | Open |  |
| Broome County | 1806 | Binghamton | Open |  |
| Cattaraugus County | 1808 | Little Valley | Open |  |
| Cayuga County | 1799 | Auburn | Open |  |
| Chautauqua County | 1808 | Mayville | James Albro |  |
| Chemung County | 1836 | Elmira | Open |  |
| Chenango County | 1798 | Norwich | Open |  |
| Clinton County | 1788 | Plattsburgh | Open |  |
| Columbia County | 1786 | Hudson | Open |  |
| Cortland County | 1808 | Cortland | Open |  |
| Delaware County | 1797 | Delhi | Open |  |
| Dutchess County | 1683 | Poughkeepsie | Open |  |
| Erie | 1821 | Buffalo | Open |  |
| Essex County | 1799 | Elizabethtown | Open |  |
| Franklin County | 1808 | Malone | Open |  |
| Fulton County | 1838 | Johnstown | Open |  |
| Genesee County | 1802 | Batavia | Open |  |
| Greene | 1800 | Catskill | Open |  |
| Hamilton County | 1816 | Lake Pleasant | Open |  |
| Herkimer | 1791 | Herkimer | Open |  |
| Jefferson County | 1805 | Watertown | Open |  |
| Kings | 1683 | New York City (coextensive with Brooklyn) | Open |  |
| Lewis | 1805 | Lowville | Open |  |
| Livingston | 1821 | Geneseo | Open |  |
| Madison | 1806 | Wampsville | Open |  |
| Monroe | 1821 | Rochester | Open |  |
| Montgomery | 1772 | Fonda | Open |  |
| Nassau | 1899 | Mineola | Open |  |
| New York | 1683 | New York City (coextensive with Manhattan) | Open |  |
| Niagara | 1808 | Lockport | Open |  |
| Oneida | 1798 | Utica | Open |  |
| Onondaga | 1792 | Syracuse | Open |  |
| Ontario | 1789 | Canandaigua | Open |  |
| Orange | 1683 | Goshen | Open |  |
| Orleans | 1824 | Albion | Open |  |
| Oswego | 1816 | Oswego | Open |  |
| Otsego | 1791 | Cooperstown | Open |  |
| Putnam | 1812 | Carmel | Open |  |
| Queens | 1683 | New York City (coextensive with Queens) | Open |  |
| Rensselaer | 1791 | Troy | Open |  |
| Richmond | 1683 | New York City (coextensive with Staten Island) | Open |  |
| Rockland | 1798 | New City | Open |  |
| St. Lawrence | 1802 | Canton | Open |  |
| Saratoga | 1791 | Ballston Spa | Open |  |
| Schenectady | 1809 | Schenectady | Open |  |
| Schoharie | 1795 | Schoharie | Open |  |
| Schuyler | 1854 | Watkins Glen | Open |  |
| Seneca | 1804 | Ovid / Waterloo | Open |  |
| Steuben | 1796 | Bath | Open |  |
| Suffolk | 1683 | Riverhead | Open |  |
| Sullivan | 1809 | Monticello | Open |  |
| Tioga | 1791 | Owego | Open |  |
| Tompkins | 1817 | Ithaca | Open |  |
| Ulster | 1683 | Kingston | Open |  |
| Warren | 1813 | Queensbury | Open |  |
| Washington | 1772 | Fort Edward | Open |  |
| Wayne | 1823 | Lyons | Open |  |
| Westchester | 1683 | White Plains | Open |  |
| Wyoming | 1841 | Warsaw | Open |  |
| Yates | 1823 | Penn Yan | Open |  |
Defunct counties
| County | Created | Abolished | Fate |
|---|---|---|---|
| Charlotte County | 1772 | 1784 | Partitioned and renamed as Washington County. |
| Cornwall County | 1665 | 1686 | Transferred to the part of Massachusetts that later became the state of Maine and partitioned; one of the 12 original counties created in the New York colony |
| Cumberland County | 1766 | 1777 | Transferred to Vermont and partitioned. |
| Dukes County | 1683 | 1692 | Transferred to Massachusetts; one of 12 original counties created in the New York colony. |
| Gloucester County | 1770 | 1777 | Transferred to Vermont and partitioned. |
| Tryon County | 1772 | 1784 | Renamed as Montgomery County |
For complete data see Wikipedia
This page last updated 8 Feb 2013.
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