The Stillwater Municipal Building is closed on these days. If the holiday falls on a Saturday, it is recognized on the previous Friday; if the holiday falls on Sunday, it is recognized on the following Monday.
- New Year's Day (January 1)
- Martin Luther King Jr. Day (third Monday in January)
- Presidents' Day (third Monday in February)
- Memorial Day (last Monday in May)
- Juneteenth National Independence Day (June 19)
- Independence Day (July 4)
- Labor Day (the first Monday in September)
- Thanksgiving (the fourth Thursday in November)
- Christmas (December 25)