Welcome to
Jefferson County
MONTANA
County Services
Notices
District Court Calendar- No Court
- Notice of Recording Fee Increase
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Jefferson County – Clancy Water and Sewer District Water System Improvements Project
Early Notice and Public Review of a Proposed Activity in a Floodplain and/or Wetland
County Holidays 2026
County Offices are closed and services may not be available on Federal Holidays.
- Martin Luther King Jr Day, January 19
- President’s Day, February 16
- Memorial Day, May 25
- Independence Day, July 3
- Labor Day, September 7
- Columbus Day, October 12
- Election Day, November 3
- Veteran’s Day, November 11
- Thanksgiving Day , November 26
- Christmas Day, December 25
- New Year’s Day, January 1, 2027