Jefferson County on the map of Montana 2025. Cities, roads, borders and directions in Jefferson County of Montana.
USA / Montana / Jefferson CountyJefferson County is located in the western area of Montana. This respectable county is named after Thomas Jefferson (1743-1826), the third President of the United States. The county seat of Jefferson County is Boulder. The county's area is about 1657 square miles. Founded on February 2, 1865, today Jefferson County is home to 12 thousand residents. This map shows the borders of Jefferson County as well as neighboring counties, including major highways and natural objecsts as of 2025. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Jefferson County.
The borders of Jefferson County over the map of Montana
Explore some more counties of Montana:
- Yellowstone County
- Wibaux County
- Wheatland County
- Valley County
- Treasure County
- Toole County
- Teton County
- Sweet Grass County
- Stillwater County
- Silver Bow County
- Sheridan County
- Sanders County
- Rosebud County
- Roosevelt County
- Richland County
- Ravalli County
- Prairie County
- Powell County
- Powder River County
- Pondera County
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