New York County Creation Dates and Parent CountiesEdit This Page

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United States Gotoarrow.png New York Gotoarrow.png County Creation Dates

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New York (Manhattan)
Name of County Date Formed Boundary
Changes
Parent County Counties Created by Boundary Changes
Albany 1683 Nov 01 Details Colonial lands Tryon 1772, Charlotte 1772, Greene 1800, Columbia 1786, Rensselaer 1791, Saratoga 1791, Schoharie 1795, Schenectady 1809
Allegany 1806 Apr 07 Details Genesee, Steuben (1808) Genesee 1811, Wyoming 1846, Tioga 1822
Berkshire 1760 May 28 Details disputed area in State of Massachusetts
Bronx 1914 4 19 Details New York, Westchester none
Broome 1806 Mar 28 Details Tioga Tioga 1822
Cattaraugus 1808 Mar 11 Details Genesee none
Cayuga 1799 Mar 08 Details Onondaga Seneca 1804, Tompkins 1817
Charlotte 1722 Mar 12 Details Albany renamed Washington 1784
Chautauqua 1808 Mar 11 Details Genesee none
Chemung 1836 Mar 29 Details Tioga Schuyler 1854
Chenango 1798 Mar 15 Details Herkimer, Tioga Oneida 1804, Madison 1806
Clinton 1788 Mar 07 Details Washington St. Lawrence 1802, Oneida 1801, Essex 1799, Franklin 1808
Columbia 1786 Apr 04 Details Albany none
Cortland 1808 Apr 08 Details Onondaga none
Cumberland 1766 6 17 Details Albany now in State of Vermont as one of originals
Delaware 1797 Mar 10 Details Ulster, Otsego none
Dukes 1688 Nov 01 Details Colonial lands (dispute) in State of Massachusetts
Dutchess 1683 Nov 01 Details Colonial lands Albany 1717, Putnam 1812
Erie 1821 Apr 02 Details Niagara Franklin 1808
Essex 1799 Mar 01 Details Clinton, Franklin none
Franklin 1808 Mar 11 Details Clinton Essex 1822
Fulton 1838 Apr 18 Details Montgomery none
Genesee 1802 Mar 30 Details Ontario Allegany 1806, Cattaraugus 1808, Chautauqua 1808, Niagara 1808, Livingston 1821, Monroe 1821, Orleans 1824, Wyoming 1841
Greene 1802 Mar 30 Details Ontario see note
Hamilton 1816 Feb 21 Details Montgomery none
Herkimer 1719 Feb 16 Details Montgomery, Otsego Onondaga 1794, Oneida 1798, Chenango 1798
Jefferson 1805 Mar 28 Details Oneida see note
Kings (Brooklyn) 1683 Nov 01 Details Colonial lands none
Lewis 1805 Mar 28 Details Oneida, Jefferson see note
Livingston 1821 Feb 23 Details Genesee, Ontario see note
Madison 1806 Mar 21 Details Chenango, Oneida (1836) none
Monroe 1821 Feb 23 Details Genesee, Ontario none
Montgomery 1772 Mar 12 Details renamed from Tryon Ontario 1789, Herkimer 1791, Otsego 1791, Tioga 1791, Hamilton 1816
Nassau 1899 9 18 Details Queens none
1652 2 16 Details Colonial lands none
Niagara 1808 Mar 11 Details Genesee Erie 1821
Oneida 1798 Mar 15 Details Herkimer Oswego 1816, Lewis 1805, Jefferson 1805, Clinton 1801, Madison 1836, Chenango 1804
Onondaga 1794 Mar 05 Details Herkimer Oswego 1816, Cayuga 1799, Cortland 1808
Ontario 1789 Jan 27 Details Montgomery, Montgomery (1791), Steuben (1814) Monroe 1821, Livingston 1821, Wayne 1823, Steuben 1796, Genesee 1802, Yates 1823
Orange 1683 Nov 01 Details Colonial lands, Ulster (1798) Rockland 1798
Orleans 1824 Nov 11 Details Genesee, Genesee (1825) none
Oswego 1816 Mar 01 Details Oneida, Onondaga none
Otsego 1791 Feb 16 Details Montgomery Schoharie 1795, Delaware 1797
Putnam 1812 Jun 12 Details Dutchess none
Queens 1683 Nov 01 Details Colonial lands Nassau 1899
Rensselaer 1791 Feb 07 Details Albany none
Richmond (Staten Island) 1683 Nov 01 (STATEN ISLAND) Details Colonial lands none
Rockland 1798 Feb 23 Details Orange none
St. Lawrence 1805 Mar 03 Details Clinton, Herkimer, Montgomery none
Saratoga 1791 Feb 07 Details Albany none
Schenectady 1809 Mar 07 Details Albany none
Schoharie 1795 Apr 06 Details Albany, Otsego Greene 1836
Schuyler 1854 Apr 17 Details Chemung, Steuben, Tompkins none
Seneca 1804 Mar 29 Details Cayuga Tompkins 1817, Wayne 1823
Steuben 1796 Mar 18 Details Ontario Ontario 1814, Livingston 1822, Allegany 1808, Yates 1824
Suffolk 1683 Nov 01 Details Colonial lands none
Sullivan 1809 Mar 27 Details Ulster none
Tioga 1791 Feb 16 Details Montgomery Chenango 1798, Broome 1806, Chemung 1836, Tompkins 1822
Tompkins 1817 Apr 17 Details Cayuga, Seneca Tioga 1822, Schuyler 1854
Tryon 1772 Mar 12 Details Albany renamed Montgomery 1784
Ulster 1683 Nov 01 Details Colonial lands Delaware 1797, Greene 1800, Orange 1798, Sullivan 1809
Warren 1813 Mar 12 Details Washington none
Washington 1784 Apr 02 Details renamed from Charlotte Clinton 1788
Wayne 1823 Apr 11 Details Ontario, Seneca none
Westchester 1683 Nov 01 Details Colonial Lands Bronx
Wyoming 1841 May 14 Details Genesee, Allegany (1846) none
Yates 1823 Feb 05 Details Ontario none
Clickable Map Click on the county in the map below to go to a county page.
Chautauqua CountyCattaraugus CountyAllegany CountySteuben CountyChemung CountyTioga CountyBroome CountyChenango CountyMadison CountyOneida CountyLewis CountyJefferson CountyOswego CountyOnondaga CountyCortland CountyCayuga CountyWayne CountyMonroe CountyOrleans CountyNiagara CountyErie CountyWyoming CountyGenesee CountyLivingston CountyOntario CountySeneca CountyYates CountySchuyler CountyTompkins CountySt. Lawrence CountyFranklin CountyClinton CountyEssex CountyHamilton CountyHerkimer CountyWarren CountyFulton CountyMontgomery CountySaratoga CountySchenectady CountyWashington CountyRensselaer CountyAlbany CountySchoharie CountyOstego CountyDelaware CountyGreene CountyColumbia CountyUlster CountySullivan CountyDutchess CountyOrange CountyPutnam CountyWestchester CountyRockland CountyBronx CountyNew York CountyQueens CountyKings CountyRichmond CountyNassau CountySuffolk CountyNew-york-county-map.gif

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  • This page was last modified on 13 August 2014, at 15:47.
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