Jefferson County, New York Genealogy Guide
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Jefferson County, New York (Map It) was created on March 28, 1805 from Oneida County. The county was named in honor of Thomas Jefferson (1743–1826), the early American statesman, author of the Declaration of Independence, and third President of the United States.
Jefferson County is bordered by St. Lawrence County (northeast), Lewis County (southeast), Oswego County (southwest), Leeds and Grenville United Counties, Ontario (north), Frontenac County, Ontario (northwest).
Jefferson County Cities and Towns include Adams (town), Adams (village), Adams Center, Alexandria (town), Alexandria Bay (village), Antwerp (town), Antwerp (village), Black River (village), Brownville (town), Brownville (village), Calcium, Cape Vincent (town), Cape Vincent (village), Carthage (village), Champion (town), Chaumont (village), Clayton (town), Clayton (village), Deferiet (village), Depauville, Dexter (village), Ellisburg (town), Ellisburg (village), Evans Mills (village), Fort Drum (federal military installation), Glen Park (village), Great Bend, Henderson (town), Herrings (village), Hounsfield (town), La Fargeville, Le Ray (town), Lorraine (town), Lyme (town), Mannsville (village), Natural Bridge, Orleans (town), Pamelia (town), Philadelphia (town), Philadelphia (village), Redwood, Rodman (town), Rutland (town), Sackets Harbor (village), Theresa (town), Theresa (village), Watertown (town), Watertown (city), West Carthage (village), Wilna (town), Worth (town) .
Jefferson County, New York Courthouse Records
Jefferson County, NY Courthouse
The Jefferson County Courthouse is located in Watertown, New York. Also contact local Town Clerks. They are responsible for vast amounts of local information from deeds, property transfers, and genealogical materials. Research on place and road names, the history of property transfers and much more are available through your Town Clerk. They are a tremendous resources. Learn More About State of New York Court, Tax, Land and Probate Records.
Please contact the each clerk's department to confirm mailing address, hours, fees and other information before visiting or requesting information because contact information sometimes changes. The Clerk's Office DOES NOT DO RESEARCH. The documents are available to interested parties, barring confidential issues. Most staff will assist people in finding the materials, but it is up to the individual to do the research.
The following dates indicates what vital, land, probate, and court records are in Jefferson county. The date listed for each category of record is usually the earliest registration filed. The earliest date does not indicate that there are numerous records for that year and does not mean that all such events were actually registered.
- Jefferson County Clerk has Land Records from 1805, Court Records from 1805 and Naturalization Records. State court naturalization records remain in custody of the county clerks. Older court naturalization records have been transferred to the National Archives--Northeast Region. The County Clerk is the keeper of most civil and criminal trial court records for Supreme Court and County Court, naturalizations, marriages (1908–35), censuses (Some county clerks' offices hold duplicate copies of some of the State censuses taken periodically between 1825 and 1925 and copies of the federal census), as well as deeds and mortgages.
- Jefferson County Surrogate Court Clerk has Probate Records from 1805. The County Surrogate Court Clerk maintain records of wills, letters testamentary, letters of administration, orders and decrees, and appointments of guardians; and filed papers, including original wills, petitions for probate (gives date of death and lists next of kin), performance bonds, property inventories (seldom found after ca. 1900), administrator's or executor's accountings, etc. Surrogate's Courts create comprehensive indexes to records and files.
- Jefferson County Treasurer is responsible for the collection of taxes.
- Jefferson County Historian maintains archival holdings for virtually every facet of the county’s history. In New York State, every municipality (town, city, village, county) must have an appointed historian. Most of the towns have their own historians as well and each can be contacted. The County Historian may provide access to obituaries, vital records, church records, maps, and family files or journals. Some historians provide search services for their office records and others may refer you to local genealogists who research in the area.
Jefferson County, New York Census Records
- Learn More: State of New York Census Records
- U.S. Federal Population Schedules: 1810, 1820, 1830, 1840, 1850, 1860, 1870, 1880 (free index), 1890 (fragmented), 1900, 1910, 1920, 1930, 1940
- U.S. Census Reconstructed Records: 1660-1820
- State Population Schedules: 1855, 1865, 1875, 1892, 1905, 1915, 1925
- Other State Census Schedules: Census of Inmates in Almshouses and Poorhouses, 1830-1920, Census Mortality Schedules, 1850-1880, Non-Population Schedules 1850-1880
- U.S. Federal Census Mortality Schedules: 1850, 1860, 1870 and 1880
- Selected U.S. Federal Census Agriculture Schedules: 1850, 1860, 1870 and 1880
- Selected U.S. Federal Census Industry Schedules: 1850, 1860, 1870 and 1880
- Union Veterans Schedules: 1890
Jefferson County, New York Vital Records
- Learn More: State of New York Vital Records
- Birth and Death Records: from 1880 to present
- Marriage Records: from 1880 to present
- Divorce Records: from January 1963 to present. Earlier Records are in the County Clerk's Office.
- Locations: New York State Dept of Health, Vital Records Section
- Vital Records Online: USAVital or Social Security Death Index
- Vital Records by Mail: Birth Certificate, Marriage Certificate, Divorce Certificate, Death Certificate, Genealogy Applications.
- In Person: New York State Dept of Health, Vital Records Section, Empire State Plaza, Albany, NY 12237; (518) 474-3077, (518) 474-3038 Information
Jefferson County, New York Resources
- State of New York Archives and Societies
- RAOGK Volunteers for New York
- Jefferson County Genealogical Society
- Jefferson County Historical Society
- Town of Watertown Historical Society
- 4 Rivers Historical Society
- Historical Association of South Jefferson
- Central New York Genealogical Society
- Jefferson Community College, Mervil Dewey Library
- Roswell P. Flower Genealogy Library
- Paddock Museum
- Directory of Archival and Historical Document Collections
- New York Genealogy Research Community
- Jefferson County, New York Message Boards
- Jefferson County, New York Genealogy Forum
Jefferson County, New York External Links
- Historical Newspapers from New York (1719 - 1992)
- Northern New York Historical Newspapers - Jefferson County combined search of Jefferson County, NY newspapers
- Jefferson County, New York Books - Amazon
- Jefferson Co., New York - FindaGrave
- A topographical description of Jefferson County in the state of New-York
- The north country : a history embracing Jefferson, St. Lawrence, Oswego, Lewis and Franklin Counties, New York
- Genealogical and family history of the county of Jefferson, New York
- Our county and its people : a descriptive work on Jefferson County, New York
- The growth of a century : as illustrated in the history of Jefferson County, New York, from 1793 to 1894
- History of Jefferson County, New York
- Jefferson County, New York Links - Cyndi's List
- Jefferson Co. NYGenweb
- Watertown, New York Directories, 1888-92
- Gazetteer and directory of Jefferson County, New York, for 1866-7
- Jefferson County, New York Ancestry Database Collections
- Jefferson County in the World War
- Jefferson County, New York Military Records