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NY Counties & NYS Census

A List of New York Counties, Dates Formed, Parent Counties, County Seats, and a List of Partial or Complete New York State Census that are known to Exist.

(Note: Click on the County Name to go to that County's GenWeb page.)

The easiest place to check for the availability of these census is to go to the LDS Family History Library website and use their on-line Library Catalog Search at http://www.familysearch.org/Eng/Library/FHLC/frameset_fhlc.asp

Update: June 28, 2008

The New York Public Library has digitized many nice old County Atlas Maps.

Link: http://drupal02.nypl.org/blogs/2008/01/17/state-county-city-atlases

County	Date Formed	Parent County	County Seat	Partial or Complete Census Exist
Albany Atlas 1866	1683	original county	Albany	1855, 1865, 1875, 1892, 1905, 1915, 1925
Allegany	1806	Genesee	Belmont	1855, 1865, 1875, 1892, 1905, 1915, 1925
Bronx	1914	New York	Bronx	1915, 1925
Broome Atlas 1876	1806	Tioga	Binghamton	1825, 1835, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Cattaraugus	1808	Genesee	Little Valley	1825, 1835, 1845, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Cayuga Atlas 1875	1799	Onondaga	Auburn	1855, 1865, 1875, 1892, 1905, 1915, 1925
Charlotte	1772	Albany	renamed Washington in 1784
Chautauqua	1808	Genesee	Mayville	1825, 1835, 1845, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Chemung	1798	Tioga	Elmira	1855, 1865, 1892, 1905, 1915, 1925
Chenango	1798	Herkimer, Tioga	Norwich	1855, 1865, 1875, 1905, 1915, 1925
Clinton	1788	Washington	Plattsburgh	1892, 1905, 1915, 1925
Columbia	1786	Albany	Hudson	1845, 1855, 1865, 1875, 1905, 1915, 1925
Cortland	1808	Onondaga	Cortland	1825, 1835, 1845, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Delaware	1797	Ulster, Otsego	Delhi	1855, 1865, 1875, 1892, 1905, 1915, 1925
Dutchess	1683	original county	Poughkeepsie	1865, 1875, 1892, 1915, 1925
Erie	1821	Niagara	Buffalo	1855, 1865, 1875, 1892, 1905, 1915, 1925
Essex	1799	Clinton	Elizabethtown	1855, 1865, 1875, 1892, 1905, 1915, 1925
Franklin	1808	Clinton	Malone	1875, 1905, 1915, 1925
Fulton	1838	Montgomery	Johnstown	1845, 1855, 1865, 1875, 1905, 1915, 1925
Genesee	1802	Ontario	Batavia	1875, 1892, 1905, 1915, 1925
Greene	1800	Ulster, Albany	Catskill	1855, 1865, 1875, 1892, 1905, 1915, 1925
Hamilton	1816	Montgomery	Lake Pleasant	1892, 1905, 1915, 1925
Herkimer	1791	Montgomery	Herkimer	1825, 1835, 1845, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Jefferson	1805	Oneida	Watertown	1825, 1835, 1855, 1865, 1875, 1905, 1915, 1925
Kings	1683	Original county	Brooklyn	1855, 1865, 1875, 1892, 1905, 1915, 1925
Lewis	1805	Oneida	Lowville	1825, 1835, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Livingston	1821	Genesee, Ontario	Geneseo	1855, 1865, 1875, 1915, 1925
Madison	1806	Chenango	Wampsville	1855, 1865, 1875, 1892, 1905, 1915, 1925
Monroe	1821	Genesee, Ontario	Rochester	1855, 1865, 1875, 1892, 1905, 1915, 1925
Montgomery	1772	Albany (as Tryon to 1784)	Fonda	1855, 1865, 1875, 1892, 1905, 1915, 1925
Nassau	1899	Queens	Mineola	1915, 1925
New York	1683	Original county	New York	1855, 1915, 1925
Niagara	1808	Genesee	Lockport	1855, 1865, 1875, 1905, 1915, 1925
Oneida	1798	Herkimer	Utica	1814, 1835, 1855, 1865, 1875, 1915, 1925
Onondaga	1794	Herkimer	Syracuse	1855, 1865, 1875, 1892, 1905, 1915, 1925
Ontario	1789	Montgomery	Canandaigua	1855, 1865, 1875, 1892, 1915, 1925
Orange	1683	Original county	Goshen	1825, 1835, 1845, 1855, 1865, 1875, 1915, 1925
Orleans	1824	Genesee	Albion	1855, 1865, 1875, 1892, 1905, 1915, 1925
Oswego	1816	Oneida, Onondaga	Oswego, Pulaski	1855, 1865, 1875, 1892, 1915, 1925
Otsego	1791	Montgomery	Cooperstown	1825, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Putnam	1812	Dutchess	Carmel	1915, 1925
Queens	1683	Original county	Jamaica	1915, 1925
Rensselaer	1791	Albany	Troy	1855, 1865, 1875, 1905, 1915, 1925
Richmond Staten Island	1683	Original county	St. George	1855, 1865, 1875, 1915, 1925
Rockland	1798	Orange	New City	1855, 1865, 1875, 1892, 1905, 1915, 1925
St. Lawrence	1802	Clinton, Herkimer, Montgomery	Canton	1845, 1865, 1905, 1915, 1925
Saratoga	1791	Albany	Ballston Spa	1855, 1865, 1875, 1892, 1905, 1915, 1925
Schenectady Atlas 1866	1809	Albany	Schenectady	1835, 1845, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Schoharie	1795	Albany, Otsego	Schoharie	1825, 1835, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Schuyler	1854	Tompkins, Steuben, Chemung	Watkins Glen	1855, 1865, 1875, 1915, 1925
Seneca	1804	Cayuga	Ovid, Waterloo	1915, 1925
Steuben	1796	Ontario	Bath	1825, 1835, 1845, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Suffolk	1683	Original county	Riverhead	1865, 1915, 1925
Sullivan	1809	Ulster	Monticello	1855, 1875, 1915, 1925
Tioga	1791	Montgomery	Owego	1825, 1835, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Tompkins	1817	Cayuga, Seneca	Ithaca	1825, 1835, 1865, 1875, 1892, 1905, 1915, 1925
Tryon	1772	Albany	(renamed Montgomery 1784)
Ulster	1683	Original county	Kingston	1855, 1865, 1875, 1905, 1915, 1925
Warren	1813	Washington	Lake George	1855, 1865, 1875, 1892, 1905, 1915, 1925
Washington	1772	Albany (see Charlotte)	Hudson Falls	1825, 1835, 1855, 1865, 1875, 1892, 1905, 1915, 1925
Wayne	1823	Ontario, Seneca	Lyons	1892, 1905, 1915, 1925
Westchester	1683	Original county	White Plains	1905, 1915, 1925
Wyoming	1841	Genesee	Warsaw	1875, 1915, 1925
Yates	1823	Ontario, Steuben	Penn Yan	1825, 1835, 1845, 1855, 1865, 1875, 1892, 1915, 1925

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