| SUBSTATE SITE | |||||
| BETTENDORF | CLINTON | 56 | DAVENPORT, WEST | 51 | |
| KNAPP CENTER, DES MOINES | AMES | 97 | DES MOINES, NORTH | 53 | |
| KNAPP CENTER, DES MOINES | DOWLING CATHOLIC, WDM | 53 | ANKENY | 46 | |
| MCLEOD CENTER, CEDAR FALLS | CEDAR RAPIDS, JEFFERSON | 47 | CEDAR FALLS | 42 | |
| TYSON EVENT CENTER, SIOUX CITY | SIOUX CITY, EAST | 75 | COUNCIL BLUFFS, T JEFFERSON | 55 | |
| US CELLULAR CENTER, CEDAR RAPIDS | LINN-MAR, MARION | 49 | PLEASANT VALLEY | 46 | |
| US CELLULAR CENTER, CEDAR RAPIDS | CEDAR RAPIDS, WASHINGTON | 54 | IOWA CITY, CITY | 47 | |
| VALLEY, WEST DES MOINES | SOUTHEAST POLK | 50 | DES MOINES, HOOVER | 48 |