| SUBSTATE SITE | |||||
| ANKENY | ANKENY | 6 | DES MOINES, ROOSEVELT | 5 | |
| BETTENDORF | NORTH SCOTT, ELDRIDGE | 5 | BETTENDORF | 4 | |
| BURLINGTON | BURLINGTON | 3 | MUSCATINE | 0 | |
| CEDAR RAPIDS, KENNEDY | CEDAR RAPIDS, KENNEDY | 7 | IOWA CITY, CITY | 0 | |
| CEDAR RAPIDS, WASHINGTON | CEDAR RAPIDS, WASHINGTON | 8 | DUBUQUE, SENIOR | 2 | |
| CLINTON | XAVIER, CEDAR RAPIDS | 8 | CLINTON | 1 | |
| DAVENPORT, CENTRAL | DAVENPORT, CENTRAL | 11 | PLEASANT VALLEY | 3 | |
| DAVENPORT, WEST | DAVENPORT, WEST | 1 | DAVENPORT, NORTH | 0 | |
| DES MOINES, HOOVER | URBANDALE | 4 | DES MOINES, HOOVER | 1 | |
| DOWLING CATHOLIC, WDM | DOWLING CATHOLIC, WDM | 11 | OSKALOOSA | 0 | (5 inn) |
| DUBUQUE, HEMPSTEAD | DUBUQUE, HEMPSTEAD | 1 | LINN-MAR, MARION | 0 | (10 inn) |
| FORT DODGE | FORT DODGE | 2 | NEWTON | 1 | |
| IOWA CITY, WEST | IOWA CITY, WEST | 5 | PRAIRIE, CEDAR RAPIDS | 0 | |
| JOHNSTON | DES MOINES, EAST | 16 | DES MOINES, NORTH | 1 | (4 inn) |
| JOHNSTON | JOHNSTON | 11 | WAUKEE | 0 | (6 inn) |
| LEWIS CENTRAL | SIOUX CITY, WEST | 9 | LEWIS CENTRAL | 2 | |
| MARSHALLTOWN | MARSHALLTOWN | 4 | CEDAR RAPIDS, JEFFERSON | 1 | |
| MASON CITY | MASON CITY | 14 | WATERLOO, EAST | 0 | (5 inn) |
| OTTUMWA | OTTUMWA | 2 | DES MOINES, LINCOLN | 1 | |
| SIOUX CITY, EAST | COUNCIL BLUFFS, ABE LINCOLN | 4 | SIOUX CITY, EAST | 3 | |
| SIOUX CITY, NORTH | SIOUX CITY, NORTH | 24 | COUNCIL BLUFFS, THOMAS JEFFERSON | 2 | (4 inn) |
| SOUTHEAST POLK | INDIANOLA | 5 | SOUTHEAST POLK | 4 | |
| VALLEY, WDM | VALLEY, WDM | 6 | AMES | 1 | |
| WATERLOO, WEST | WATERLOO, WEST | 8 | CEDAR FALLS | 4 |