Jefferson County Genealogy
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Jefferson County Countywide Sources
1790-1940 U.S. Fed. Census Archives
1790-1940 United States Federal Census World Vital Records
1810 Federal Census Northern New York Genealogy
1810 Federal Census of Jefferson County NY US Gen Web
1820 Federal Census Northern New York Genealogy
1850 Census
1850 Federal Census Northern New York Genealogy
1855 New York State Census
1865 Census--Special Schedule (deaths, marriages, and deceased veterans) US Gen Web
1881-present New York Birth Certificates (order here) Archives
1881-present New York Death Certificates (order here) Archives
1881-present New York Marriage Certificates (order here) Archives
1890 Census of Civil War Soldiers US Gen Web
1918 Farm Directory US Gen Web
1918 Farm Directory (Jefferson and Lewis Counties) Northern New York Genealogy
A History of Jefferson County in the State of New York from the Earliest Period to the Present Time World Vital Records
A History of the Jefferson County Region
A history of Jefferson County in the state of New York : from the earliest period to the present time
A history of Jefferson County in the state of New York, from the earliest period to the present time Family History Library
American Genealogical Biographical Index Databases World Vital Records
American Genealogical-Biographical Index (AGBI)
An every-name index of the 1865 New York state census for Jefferson County (New York) Family History Library
BillionGraves Cemetery Records Index Family Search
Biographies of Jefferson County, New York, published 1898 Ray's Place
Burials in Jefferson, Lewis, and Oswego Counties of Northern New York Northern New York Genealogy
Business Directory, 1866 US Gen Web
Business Directory, 1868 US Gen Web
Card index of naturalization records Family History Library
Cemetery inscriptions : Jefferson County cemetery records Family History Library
Central New York business directory, 1905, Onondaga, Cayuga, Cortland, Tompkins, Madison, Oneida, Herkimer, Otsego, Tioga, Broome, Chenango, Jefferson, Oswego and Lewis counties Cornell University Library
Child's Business Directory 1890 US Gen Web
Child's Gazetteer (includes histories of Jefferson County towns) US Gen Web
Civil War Veterans of Jefferson County Northern New York Genealogy
Coroner's report : contains reports for the following years, 1878, 1886, 1889, 1890, 1894-1899, 1911-2, 1922-4, 1928, 1934-5, 1939-1943, 1945 Family History Library
Deaths in Jefferson, Lewis, and St Lawrence Counties (from Northern Journal) Northern New York Genealogy
Deaths in the New York Reformer : 1850-1862 Family History Library
Deed records (Jefferson Conty, New York); index, 1805-1966, 1805-1907 Family History Library
Disposal of real estate, 1832-1895 Family History Library
Estate papers, 1805-1945 Family History Library
Every name index for the Informer 1994-2007 Family History Library
Federal Land Patents Bureau of Land Management
Find A Grave Gravestone, Tombstone, and Memorial Photo Collection World Vital Records
Gazetteer and directory of Jefferson County, New York, for 1866-7 Family History Library
Genealogical and family history of the county of Jefferson, New York : a record of the achievements of her people and the phenomenal growth of her agricultural and mechanical industries Family History Library
Genealogical gleanings : outside Jefferson and surrounding New York counties in the New York Reformer, 1850-1861 Family History Library
Genealogy resources in the towns of Jefferson County Family History Library
Geographical gazetteer of Jefferson County, N.Y. 1684-1890 Family History Library
German Flatts Dutch Reformed Church Baptismal Records of Early Jefferson County Residents 1806-1820 US Gen Web
Grooms and brides of Jefferson County, New York Family History Library
Guardianship records, 1851-1908; index to guardianship, 1831-1900 Family History Library
Guide to historical resources in Jefferson County, New York, repositories Family History Library
Highway map of Jefferson County, New York Family History Library
History of Jefferson County Towns in French's Gazetteer US Gen Web
History of Jefferson County in French's Gazetteer US Gen Web
History of Jefferson County, New York : with illustrations and biographical sketches of some of its prominent men and pioneers Family History Library
Index of Births Recorded in Watertown Daily Times and Jefferson County Journal
Index of Deaths Recorded in Watertown Daily Times and Jefferson County Journal
Index of Marriages Recorded in Watertown Daily Times and Jefferson County Journal
Index to Franklin B. Hough's 1854 History of Jefferson County, New York Family History Library
Jefferson Co., New York, census records, 1915, 1925 Family History Library
Jefferson County Cemeteries New York Gravestones
Jefferson County Revolutionary burials Family History Library
Jefferson County Will Testators Index Sampubco
Jefferson County centennial, 1905 : speeches, addresses, and stories of the towns
Jefferson County in the World War : a record of the activites of the various organizations and individuals
Jefferson County sesqui-centennial program and historical almanac
Jefferson County, New York cemetery records : grave stones copied with death date prior to 1885 Family History Library
Jefferson County, New York land ownership map, 1855 Family History Library
Jefferson County, New York will abstracts 1830-1850 Family History Library
Jefferson County, New York will testators index, 1830-1900 Family History Library
Jefferson County, New York, marriage and death notices and cemetery inscriptions Family History Library
Marriage records, 1908-1935 Family History Library
Marriages in Jefferson, Lewis, and St Lawrence Counties Northern New York Genealogy
Marriages in the New York Reformer : 1850-1862 Family History Library
Mortgage records, 1805-1851; index, 1805-1888 Family History Library
Name index of topographical atlas, Jefferson County, New York, published 1864 Family History Library
Naturalization records, 1819-1906 Family History Library
Naturalization records, 1908-1920 Family History Library
New York Births and Christenings, 1640-1962 Family Search
New York Deaths and Burials, 1795-1952 Family Search
New York Marriages, 1600-1784
New York Marriages, 1686-1980 Family Search
New York, County Marriages, 1908-1935 Family Search
Our county and its people : a descriptive work on Jefferson County, New York
Our county and its people, a descriptive work on Jefferson County, New York Family History Library
Outline of the object, work, condition, and needs of the society : some historic facts and pictures of Jefferson County
Primary declarations of intention of aliens, no. 1, 1896-1906 Family History Library
Proceedings of the Board of Supervisors of the county of Jefferson, for the year 1901
Record of wills (Jefferson County, New York), 1830-1900 Family History Library
Revolutionary Veteran Burials, Jefferson County NY US Gen Web
Roster of the Daughters of the War of 1812 US Gen Web
State census records of Jefferson County, New York, 1825-1905 Family History Library
The Black River conference memorial : the life and character of the deceased members of the Black River
The growth of a century : as illustrated in the history of Jefferson County, New York, from 1793 to 1894
The north country : a history embracing Jefferson, St. Lawrence, Oswego, Lewis and Franklin Counties, New York
U.S. Federal Census 1790-1940 Family Search
United States Obituary Collection
United States, New England Naturalization Index, 1791-1906 Family Search
World War I Personnel Roster US Gen Web
More Jefferson County records are available on the statewide page