Find a County
Jefferson County, MT
PO BOX H
County Courthouse
Boulder, MT 59632-0249
Phone: (406)225-4025
Fax: (406)225-4149
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NACo Member
| County Populations |
| 1980 |
1990 |
2000 |
2005 |
|
7,040 |
7,939 |
10,049 |
11,170 |
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County Seat: Boulder
Year Organized: 1864
Square Miles: 1,657
Size of Board: 3
MSA: Helena, MT Micropolitan Statistical Area
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Places in Jefferson County
Census Bureau Quick Facts
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Please contact the county to get the most accurate listing.
To report any updates, deletions
or additions, contact Database Updates
or send a fax to NACo, Attn: Database Updates (202)393-2630.
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