Other County Resources Books on County Genealogy and History |
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County |
Date |
Formed Parent County |
County |
Seat Albany |
1683 |
original county |
Albany |
Allegany |
1806 |
Genesee |
Belmont |
Bronx |
1914 |
New York |
Bronx |
Broome |
1806 |
Tioga |
Binghamton |
Cattaraugus
|
1808 |
Genesee |
Little Valley |
Cayuga |
1799 |
Onondaga |
Auburn |
Charlotte |
1772 |
Albany |
renamed Washington in 1784 |
Chautauqua |
1808 |
Genesee |
Mayville |
Chemung |
1798 |
Tioga |
Elmira |
Chenango |
1798 |
Herkimer, Tioga |
Norwich |
Clinton |
1788 |
Washington |
Plattsburgh |
Columbia |
1786 |
Albany |
Hudson |
Cortland |
1808 |
Onondoga |
Cortland |
Delaware |
1797 |
Ulster, Otsego |
Delhi |
Dutchess |
1683 |
original county |
Poughkeepsie |
Erie |
1821 |
Niagara |
Buffalo |
Essex |
1799 |
Clinton |
Elizabethtown |
Franklin |
1808 |
Clinton |
Malone |
Fulton |
1838 |
Montgomery |
Johnstown |
Genesee |
1802 |
Ontario |
Batavia |
Greene |
1800 |
Ulster, Albany |
Catskill |
Hamilton |
1816 |
Montgomery |
Lake Pleasant |
Herkimer |
1791 |
Montgomery |
Herkimer |
Jefferson |
1805 |
Oneida |
Watertown |
Kings
|
Brooklyn 1683 |
Original county |
Brooklyn |
Lewis |
1805 |
Oneida |
Lowville |
Livingston
|
1821 |
Genesee, Ontario |
Geneseo |
Madison |
1806 |
Chenango |
Wampsville |
Monroe |
1821 |
Genesee, Ontario |
Rochester |
Montgomery |
1772 |
Albany (as Tryon to 1784) |
Fonda |
Nassau |
1899 |
Queens |
Mineola |
New York City |
(Manhattan) 1683 |
Original county |
New York |
Niagara |
1808 |
Genesee |
Lockport |
Oneida |
1798 |
Herkimer |
Utica |
Onondaga |
1794 |
Herkimer |
Syracuse |
Ontario |
1789 |
Montgomery |
Canandaigua |
Orange |
1683 |
Original county |
Goshen |
Orleans |
1824 |
Genesee |
Albion |
Oswego |
1816 |
Oneida, Onondaga |
Oswego, Pulaski |
Otsego |
1791 |
Montgomery |
Cooperstown |
Putnam |
1812 |
Dutchess |
Carmel |
Queens |
1683 |
Original county |
Jamaica |
Rensselaer |
1791 |
Albany |
Troy |
Richmond |
Staten Island 1683 |
Original county |
St. George |
Rockland |
1798 |
Orange |
New City |
St. Lawrence |
1802 |
Clinton, Herkimer, Montgomery |
Canton |
Saratoga |
1791 |
Albany |
Ballston Spa |
Schenectady |
1809 |
Albany |
Schenectady |
Schoharie |
1795 |
Albany, Ostego |
Schoharie |
Schuyler |
1854 |
Tompkins, Steuben, Chemung |
Watkins Glen |
Seneca |
1804 |
Cayuga |
Ovid, Waterloo |
Steuben |
1796 |
Ontario |
Bath |
Suffolk |
1683 |
Original county |
Riverhead |
Sullivan |
1809 |
Ulster |
Monticello |
Tioga |
1791 |
Montgomery |
Owego |
Tompkins |
1817 |
Cayuga, Seneca |
Ithaca |
Tryon |
1772 |
Albany |
(renamed Montgomery 1784) |
Ulster |
1683 |
Original county |
Kingston |
Warren |
1813 |
Washington |
Lake George |
Washington |
1772 |
Albany (see Charlotte) |
Hudson Falls |
Wayne |
1823 |
Ontario, Seneca |
Lyons |
Westchester |
1683 |
Original county |
White Plains |
Wyoming |
1841 |
Genesee |
Warsaw |
Yates |
1823 |
Ontario, Steuben |
Penn Yan |
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