Missoula County is governed by a Board of County Commissioners, consisting of three elected members who serve six-year staggered terms. All legislative, executive and administrative powers and duties of the local government not specifically reserved by law or ordinance to other elected officials reside in the Commission (MCA-7-3-401). The current Board of County Commissioners includes Jean Curtiss, Nicole "Cola" Rowley and David Strohmaier (Chair). 

Under such limitations and restrictions as are prescribed by law, the Board of County Commissioners has jurisdiction and power to represent the County and has care of the County property and the management of the business and concerns of the County and to perform all other acts and functions which may be necessary to the full discharge of the duties of the chief executive authority of the county government (MCA-7-5-2101).

The Commissioners' Office staff consists of a Chief Administrative Officer, a Chief Operating Officer and three Administrative Assistants. Principle functions include providing management and administrative direction to County offices, providing support to the Board of County Commissioners, as requested, implementing policies and decisions, and assisting in the preparation of the County budget.

 Commissioner Curtiss will be up for re-election in November of 2018; Rowley in 2020; and Strohmaier in 2022.