The Board of Sedgwick County Commissioners is vested by Kansas state statute with both legislative and administrative powers and duties. These powers and duties include:

  1. Supervision of county property
  2. Organization of townships following statutory procedures
  3. Control of the financial affairs of the county
  4. Approval of the annual budget
  5. Levying of county taxes
  6. Designation of depositories for the county treasurer
  7. Construction and maintenance of county roads and bridges
  8. Approval of land use and zoning policies for the county
  9. Issuance of bonds
  10. Awarding of contracts
  11. Incorporation of cities
  12. Creation of special districts
  13. Setting of salaries of all county officials
  14. Providing a jail, courthouse, office space, and supplies for all county officers and the district court
  15. Appointment of members of various boards and commissions
  16. Serving as the local board of health

The board also serves as the hearing officer panel for tax appeals cases, sits as the board of canvassers for elections, and acts as the governing body for Fire District 1.