Officials announced the results after a panel of Judges chose the finalist form a field of 31 entrants.
The Queen of the River and two princesses will be chosen after several interviews.
Winners will be announced Saturday at during a coronation ceremony at 1 p.m. at the Sioux City Convention Center.
Nichole is the daughter of Kyle and Darla Prunty of Cleghorn. She recently graduated from St. Lukes School of Radiology and will be attending her final year of classes at Briar Cliff University this coming fall.
Nichole was 2005 Cherokee County Fair Queen contestant and was chosen as the Cherokee County Fair Princess that year.