Jefferson County Map, New York
Jefferson County Map Collection
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Jefferson County, New York
Jefferson County is at the top of New York state, where the St. Lawrence River meets Lake Ontario. It’s a place of islands, lighthouses, and military history. Watertown is the county seat, which buzzes with a mix of urban amenities and small-town feel.
The Thousand Islands region is a paradise for boaters and fishing. Visitors also enjoy the Tug Hill region for hiking and world-class snowmobiling. You can’t talk about Jefferson without mentioning Fort Drum, home to the 10th Mountain Division.
The county has deep ties to the War of 1812. Sackets Harbor is a village on Lake Ontario that played a crucial role in that conflict. The area is known for its excellent cheese with a festival to even prove it.
| Category | Details |
|---|---|
| County Name | Jefferson County |
| County Seat | Watertown |
| Population | Approximately 113,000 |
| Cities, Towns, and Communities | Watertown, Carthage, Clayton, Alexandria Bay, Adams, Sackets Harbor |
| Interstates and Highways | Interstate 81, U.S. Route 11, New York State Route 12, New York State Route 3 |
| FIPS Code | 36-045 |
| Total Area (Land and Water) | 1,857 square miles (1,269 sq mi land, 588 sq mi water) |
| Adjacent Counties (and Direction) | St. Lawrence County (Northeast), Lewis County (Southeast), Oswego County (Southwest) |
| Time Zone | Eastern Time Zone (ET) |
| State | New York |
| Coordinates | 44.0007° N, 75.9983° W |
| Etymology | Named after Thomas Jefferson, the third President of the United States |
| Major Landmarks | Thousand Islands, Sackets Harbor Battlefield, Boldt Castle, Fort Drum |
| Website | Jefferson County Website |
PHYSICAL MAP
Jefferson County Topographic Map
Jefferson County has a landscape with gentle elevation changes. The western edge flattens into lake plains. But inland, rolling hills rise gradually. Streams drain west and north, feeding into the St. Lawrence. Explore the county more using our zoom tool below.
TRANSPORTATION MAP
Jefferson County Road Map
Jefferson County sits at a crossroads near the Canadian border. Though many routes hug the shoreline of Lake Ontario or the St. Lawrence River, others dart inland toward farmland. County roads are long and often rural.
SATELLITE IMAGERY
Jefferson County Satellite Map
The Thousand Islands region is easy to spot. Watertown stands out in gray. Forests and farms dominate the interior. The mix of open fields, woodlands, and water is clear from the sky.
OUTLINE MAP
Jefferson County Blank Map
Jefferson County stretches along the St. Lawrence River and Lake Ontario. Its northern and western edges are water borders. It shares an international boundary with Canada.
Neighboring Counties
Here are the 3 neighboring counties of Jefferson County:
New York County Map
New York has 62 counties. Each with their own attitude. Manhattan’s chaos to the Adirondacks’ silence… and how about those Buffalo wings? Explore our NY counties maps.