Idaho Code § 22-201
County fair boards for the purpose of conducting county fairs may be created in the following manner: A petition signed by at least five (5) and not more than ten (10) persons, each of whom must be a qualified elector of the county may be filed with the clerk of the board of county commissioners of any county. Upon receipt of such petition the board of county commissioners shall immediately cause the clerk to give notice by publication in a newspaper of general circulation printed within the county, for not less than two (2) weeks, to the effect that a petition for the creation of a county fair board has been filed with the clerk of the board of county commissioners and that a hearing on the petition will be held by the board of county commissioners on a date named in such notice not less than three (3) nor more than six (6) weeks from the date of the first publication of such notice.
Whenever a county has conducted a county fair for at least two (2) consecutive years immediately prior to the enactment of this act, it shall not be necessary to file a petition, but in such case the board of county commissioners may cause the clerk to publish a notice in a newspaper of general circulation printed within the county, for at least two (2) weeks, to the effect that it is the intention of the board of county commissioners of such county to create a county fair board for the purpose of conducting a county fair in accordance with the provisions of this act, and that a hearing on the same will be held by the board of county commissioners on a date named in such notice not less than three (3) nor more than six (6) weeks from the date of the first publication of such notice.
Idaho Code § 22-201