Jefferson County, New York Genealogy

United States &gt; New York &gt; Jefferson County

County Courthouse
195 Arsenal St. Watertown, NY

History



 * Named for Thomas Jefferson, the third President of the United States.

Parent County

 * Created 28 March 1805 from Oneida County.

Boundary Changes

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

City

 * Watertown

Military

 * Fort Drum

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

Web Sites

 * The Jefferson County NYGenWeb Project, an 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)
 * FamilySearch.org Family History Library catalog for Jefferson County