There are three members on the Board of Supervisors, each elected by the citizens in one of the three districts. Individuals serve overlapping four-year terms, with elections held every two years.

The Board elects one of its members annually to chair its activities.

In Sac County, the Board of Supervisors convenes each Tuesday morning at 10:00 to consider and act upon official business and approve personnel appointments. The meetings are held at the Sac County Courthouse,  100 N. W. State St., Sac City, Iowa. The current meeting agenda and minutes are  posted here on the website and also given to the designated county newspapers.

The Board of Supervisors has both legislative and administrative powers and is the policy-making body for Sac County government. With its authority to adopt legislation and policies for department operations, the Board sets priorities, allocates resources and maintains budgetary control.

The budget process is the most important power of the Board. By using the budget process effectively, the Board is able to monitor and correct inefficiencies in all organizational units, including elected departments, quasi-organizations, and administrative departments.  In addition to these responsibilities, the Board of Supervisors promotes and facilitates various cooperative efforts between and among other government entities and jurisdictions.

Most importantly, the Board is available to its constituency and can respond to issues of importance to citizens. The Board also appoints individuals and serves on a number of Boards and Commissions that affect all aspects of Sac County.