| SUBSTATE SITE | |||||
| ANKENY | MARSHALLTOWN | 51 | AMES | 50 | |
| DOWLING CATHOLIC, WDM | WAUKEE | 57 | DES MOINES, LINCOLN | 53 | |
| MCLEOD CTR., CEDAR FALLS | LINN-MAR, MARION | 62 | CEDAR RAPIDS, JEFFERSON | 59 | |
| PLEASANT VALLEY | DAVENPORT, CENTRAL | 69 | BETTENDORF | 59 | |
| PRAIRIE, CEDAR RAPIDS | CEDAR RAPIDS, KENNEDY | PPD | DUBUQUE, SENIOR | PPD | |
| TYSON EVENT CTR, SIOUX CITY | SIOUX CITY, NORTH | 70 | SIOUX CITY, EAST | 58 | |
| US CELLULAR CTR, CEDAR RAPIDS | IOWA CITY, CITY HIGH | 58 | IOWA CITY, WEST | 51 | |
| VALLEY, WEST DES MOINES | SOUTHEAST POLK | 52 | DES MOINES, HOOVER | 40 |