| SUBSTATE SITE | |||||
| ANKENY | JOHNSTON | 45 | AMES | 44 | |
| DES MOINES, LINCOLN | INDIANOLA | 73 | SE POLK, RUNNELLS | 57 | |
| DOWLING CATHOLIC, WDM | DES MOINES, HOOVER | 48 | URBANDALE | 45 | |
| MASON CITY | FORT DODGE | 86 | CEDAR FALLS | 80 | 2ot |
| MUSCATINE | PLEASANT VALLEY | 54 | BETTENDORF | 37 | |
| TYSON EVENTS CTR, SIOUX CITY | SIOUX CITY, EAST | 64 | LEWIS CENTRAL | 44 | |
| US CELLULAR CTR, CEDAR RAPIDS | LINN-MAR, MARION | 74 | CEDAR RAPIDS, JEFFERSON | 52 | |
| US CELLULAR CTR, CEDAR RAPIDS | CEDAR RAPIDS, WASHINGTON | 51 | IOWA CITY, WEST | 48 | ot |