Jefferson County, New York Genealogy

United States New York  Jefferson County

Parent County

 * Created 28 March 1805 from Oneida County.

Neighboring Counties
Lewis· Oswego· St. Lawrence· Lake Ontario· Ontario counties: Frontenac· Grenville· Leeds

Boundary Changes

 * 1817: Carleton Island, captured from the British in the War of 1812 was annexed.

Cemeteries
NNY Genealogy - Stories in Stone

Census
For information and tips on using and accessing online census records, see New York Census.

Military
Civil War service men in Wyoming County served in various regiments. Men often joined a company (within a regiment) that originated in their county.


 * - 129th Regiment, New York Infantry

Naturalization and Citizenship
SAMPUBCO Browsable index of applicants.

Newspapers
Watertown Herald, years 1886-1918 Northern New York Historical Newspapers

Probate Records
SAMPUBCO Browsable index of testators of wills.

Courthouse
The Jefferson County Clerk's office has marriage, land, court, military discharge and naturalization records as well as the state census. The Surrogate Court has probate records. For further information about where the records for Jefferson County are held, see the Jefferson County Courthouse page.

Family History Centers

 * Introduction to LDS Family History Centers
 * Watertown New York Family History Center

Divorce
Additional Resources

Websites

 * The Jefferson County NYGenWeb Project, a member of The NYGenWeb Project, an affiliate of The USGenWeb Project.
 * The USGenWeb Archives Project for Jefferson County.
 * The USGenWeb Archives Project for Jefferson County. (Mirror site)