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Map of Jefferson County - Jefferson County is a county located in the U.S. state of New York. Jefferson County Map showing cities, highways, important places and water bodies. Get Where is Jefferson County located in the map, major cities in Jefferson county, population, areas, and places of interest.
Map of Jefferson County, New York
About Jefferson County Map, New York: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.
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About Jefferson County, New York
Jefferson County is a county located in the U.S. state of New York. It's county seat is Watertown. As per 2020 census, the population of Jefferson County is 116295 people and population density is 62.63 square miles. According to the United States Census Bureau, the county has a total area of 1,857 sq mi (4,810 km2). Jefferson County was established on 1805.
Facts about Jefferson County, New York
| Country | United States |
| State | New York |
| Region | Northern New York / North Country |
| County Seat | Watertown |
| Founded | March 18, 1805 |
| Named For | Thomas Jefferson (third U.S. President) |
| Coordinates | ~44.00° N, 75.99° W |
| Total Area | ~1,857 sq mi |
| Land Area | ~1,269 sq mi |
| Water Area | ~588 sq mi |
| Water % | ~32% |
| Population (2020) | ~116,721 |
| Estimated Population (2024) | ~114,787 |
| Population Density | ~92/sq mi |
| Largest Municipality | Watertown |
| Other Towns & Communities | Adams, Alexandria Bay, Carthage, Clayton, Sackets Harbor |
| Main Industries | Military (Fort Drum), Tourism, Agriculture, Services |
| Major Highways | I‑81, U.S. 11, NY‑3, NY‑12, NY‑180 |
| Time Zone | Eastern Time (UTC−05:00) |
| Known For | Fort Drum military base, Thousand Islands & St. Lawrence River, Black River, outdoor recreation |
| Website | https://www.jeffersoncountyny.gov/ |
Top Attractions in Jefferson County, New York
- Thousand Islands Region – Scenic islands and boat tours.
- Boldt Castle – Iconic castle on Heart Island.
- Sackets Harbor Battlefield – War of 1812 historic site.
- Watertown Public Square – Downtown shops and dining.
- Fort Drum Military Museum – U.S. Army history exhibits.
- Black River – Fishing and paddling river.
- Thompson Park – Zoo, trails, and city views.
- Jefferson County Historical Society – Local history museum.
- Sandy Pond – Fishing and waterfront recreation.
- Southwick Beach State Park – Sandy Lake Ontario beach.
- Antwerp Village Historic Area – Small-town historic charm.
- Cape Vincent Lighthouse – Scenic lighthouse views.
Cities & Towns in Jefferson County, New York
Watertown, Adams, Carthage, Cape Vincent, Alexandria Bay, Black River, Sackets Harbor, Clayton, Lyme, Champion, Le Ray, Lorraine, Pamelia, Theresa, Hounsfield, Orleans, Champion Center, Antwerp, La Fargeville
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