The Board of Supervisors is the legislative body of Page County and the following are some of its duties and powers:

 Approves bonds of county officials

 Establishes and vacates public highways

 Levies taxes to produce revenue for county purposes

 Allows claims against the county and orders them paid

 Allows applications for Homestead, Military, and Family Farm Credit

 Fills vacancies in county offices, except members of its own body

 Canvasses the vote totals of elections

 Approves all county budgets

 Appoints a County Engineer to supervise the county road system

 Oversees the maintenance of the county buildings

 Appoints all members or individuals to the following county boards or positions: Conservation, Health, Zoning, Board of Adjustment, Care Review, Veterans Affairs, MC Safety Coordinator, Page County Development Commission, ADA Coordinator, DOT Drug Testing, Memorial Hall Commissions, IDHS Advisory Board, Homeland Security Coordinator, Central Iowa Tourism Regional Representatives

 Appoints individual members to the following boards: Civil Service, Compensation, Judicial Magistrate Appointing Commission, Eminent Domain Compensation Commission

 Comprises 1/3 of the Conference Board that appoints the Assessor, approves the Assessor Office budget, and appoints members of the Board of Review and Examining Board