Jefferson County, Administrative county in northern New York, US
Jefferson County encompasses 1,857 square miles of land and water, including portions of the Thousand Islands region along the St. Lawrence River.
The territory, established in 1805, originated from Albany County and underwent multiple divisions before becoming Jefferson County as part of New York State.
The county maintains strong military connections through Fort Drum, home to the 10th Mountain Division, influencing local traditions and community demographics.
The county seat of Watertown serves residents from its administrative center at 175 Arsenal Street, managing governmental operations for 116,721 inhabitants.
The Black River flows through the county into Lake Ontario, creating natural features that support agriculture, recreation, and water-based activities.
Location: New York
Inception: 1805
Capital city: Watertown
Shares border with: St. Lawrence County, Oswego County, Lewis County
Website: http://co.jefferson.ny.us
GPS coordinates: 43.99000,-76.05000
Latest update: May 26, 2025 21:50
Boldt Castle
40.8 km
Kingston Penitentiary
45 km
Deer Island
42.8 km
Collins Bay Institution
48.6 km
Fort Frontenac
43.7 km
CFB Kingston
42.3 km
Heart Island
40.7 km
Thousand Islands National Park
41.1 km
Carleton Island
28.3 km
Zavikon Island
43.6 km
Fort Henry
42.3 km
Kingston General Hospital
44 km
Prison for Women
45.2 km
Southwick Beach State Park
27.5 km
Howe Island
36.4 km
Wellesley Island State Park
38.1 km
George C. Boldt Yacht House
40.9 km
Kingston City Hall
43.6 km
Madison Barracks
6.3 km
Richardson Memorial Stadium
45.7 km
Cataraqui Cemetery
49.7 km
Kingston Royal Naval Dockyard
42.7 km
Bellevue House
44.6 km
LeRay Mansion
23.9 km
Kingston Memorial Centre
45.4 km
Agnes Etherington Art Centre
44.3 km
Sackets Harbor Battlefield State Historic Site
8.3 km
Whetstone Gulf State Park
56.3 kmReviews
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