55 ILCS 5/6-4002

The resolution of the county board authorizing the issuance of the general obligation bonds shall prescribe all the details of the bonds and specify the total amount of the bonds to be issued, the form and denomination of the bonds, the date they are to bear, the place they are payable, the date or dates of maturity, which shall not be more than 30 years after the date of the bonds, the rate of interest, which shall not exceed that authorized by the Bond Authorization Act, and the dates on which the interest is payable.