Jefferson County, New York
Learn more about Jefferson County, New York
|Jefferson County, New York|
| Image:Map of New York highlighting Jefferson County.svg|
Location in the state of New York
4,810 km² (1,857 mi²)
3,295 km² (1,272 mi²)
1,515 km² (585 mi²), 31.49%
Jefferson County is a county located in the U.S. state of New York. As of 2000, the population was 111,738. It is named after Thomas Jefferson, third President of the United States of America. Its county seat is Watertown.
When counties were established in New York State in 1683, the present Jefferson County was part of Albany County. This was an enormous county, including the northern part of New York State as well as all of the present State of Vermont and, in theory, extending westward to the Pacific Ocean. This county was reduced in size on July 3, 1766 by the creation of Cumberland County, and further on March 16, 1770 by the creation of Gloucester County, both containing territory now in Vermont.
On March 12, 1772, what was left of Albany County was split into three parts, one remaining under the name Albany County. One of the other pieces, Tryon County, contained the western portion (and thus, since no western boundary was specified, theoretically still extended west to the Pacific). The eastern boundary of Tryon County was approximately five miles west of the present city of Schenectady, and the county included the western part of the Adirondack Mountains and the area west of the West Branch of the Delaware River. The area then designated as Tryon County now includes 37 counties of New York State. The county was named for William Tryon, colonial governor of New York.
In the years prior to 1776, most of the Loyalists in Tryon County fled to Canada. In 1784, following the peace treaty that ended the American Revolutionary War, the name of Tryon County was changed to Montgomery County to honor the general, Richard Montgomery, who had captured several places in Canada and died attempting to capture the city of Quebec, replacing the name of the hated British governor.
In 1789, the size of Montgomery County was reduced by the splitting off of Ontario County from Montgomery. The actual area split off from Montgomery County was much larger than the present county, also including the present Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston, Monroe, Niagara, Orleans, Steuben, Wyoming, Yates, and part of Schuyler and Wayne Counties.
In 1791, Herkimer County was one of three counties split off from Montgomery (the other two being Otsego, and Tioga County). This was much larger than the present county, however, and was reduced by a number of subsequent splits. The first one of these, in 1794, produced Onondaga County. This county was larger than the current Onondaga County, including the present Cayuga, Cortland, and part of Oswego Counties.
Jefferson County was split off from Oneida County in 1805.
Jefferson County is on the western side of northern New York State, adjacent to the area where the Saint Lawrence River enters Lake Ontario. It is almost due north of Syracuse, and northwest of Utica. The county is at the international border with Canada.
 Adjacent Counties
- St. Lawrence County, New York - northeast
- Lewis County, New York - southeast
- Oswego County, New York - southwest
- Leeds and Grenville United Counties, Ontario - north
- Frontenac County, Ontario - northwest
As of the census² of 2000, there were 111,738 people, 40,068 households, and 28,127 families residing in the county. The population density was 34/km² (88/mi²). There were 54,070 housing units at an average density of 16/km² (42/mi²). The racial makeup of the county was 88.71% White, 5.83% Black or African American, 0.53% Native American, 0.92% Asian, 0.14% Pacific Islander, 2.05% from other races, and 1.82% from two or more races. 4.19% of the population were Hispanic or Latino of any race.
There were 40,068 households out of which 37.20% had children under the age of 18 living with them, 55.60% were married couples living together, 10.40% had a female householder with no husband present, and 29.80% were non-families. 24.40% of all households were made up of individuals and 10.10% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.07.
In the county the population was spread out with 26.50% under the age of 18, 11.80% from 18 to 24, 31.30% from 25 to 44, 19.10% from 45 to 64, and 11.30% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 107.30 males. For every 100 females age 18 and over, there were 108.50 males.
The median income for a household in the county was $34,006, and the median income for a family was $39,296. Males had a median income of $28,727 versus $21,787 for females. The per capita income for the county was $16,202. About 10.00% of families and 13.30% of the population were below the poverty line, including 16.80% of those under age 18 and 9.20% of those age 65 or over.
 Cities, towns, villages, and other communities
- Adams (town) Adams history
- Adams (village)
- Adams Center
- Alexandria (town)
- Alexandria Bay (village)
- Antwerp (town)
- Antwerp (village)
- Black River (village)
- Brownville (town)
- Brownville (village)
- Cape Vincent (town)
- Cape Vincent (village)
- Carthage (village)
- Champion (town)
- Chaumont (village)
- Clayton (town)
- Clayton (village)
- Deferiet (village)
- 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)
- Rodman (town)
- Rutland (town)
- Sackets Harbor (village)
- Theresa (town)
- Theresa (village)
- Watertown (town)
- Watertown (city)
- West Carthage (village)
- Wilna (town)
- Worth (town)
- => Designations in parentheses relate to official political status.
 Additional county information
Jefferson Community College in Watertown provides higher education within the county.
 External links
- Jefferson County webpage
- Guide to historical information
- Jefferson County information
- Jefferson County history & genealogy
- Jefferson County History with pics and links
- The Jefferson County Webboard, popular long-running discussion webboard for the area
- Jefferson County history pages
- Alexandria Bay in Jefferson County - Local Resource & News Website