Jefferson County, Montana
Jefferson County profile, demographic data, and geographic information.
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 13,304 (2024)
ID: 169415
|
County | Official County Government |
Contact: CLERK AND RECORDER
PO BOX H, BOULDER MT 59632
|
|
CITY OF BOULDER
GUS Population: 1,305 (2024)
ID: 169452
|
Municipal | Municipal Government Within County |
Contact: CITY CLERK
PO BOX 68, BOULDER MT 59632-0068
|
|
TOWN OF WHITEHALL
GUS Population: 1,116 (2024)
ID: 169453
|
Municipal | Municipal Government Within County |
Contact: TOWN CLERK
PO BOX 529, WHITEHALL MT 59759-0529
|