Cedar Rapids-Iowa City-Waterloo
| Ackley | Ainsworth | Alburnett |
| Allison | Alta Vista | Amana |
| Anamosa | Aplington | Aredale |
| Arlington | Atkins | Aurora |
| Baldwin | Beaman | Belle Plaine |
| Blairstown | Brandon | Bristow |
| Brooklyn | Buckingham | Cedar Falls |
| Cedar Rapids | Center Junction | Center Point |
| Central City | Charles City | Chelsea |
| Clarence | Clarksville | Clutier |
| Coggon | Conrad | Conroy |
| Coralville | Deep River | Delhi |
| Denver | Dewar | Dike |
| Dumont | Dunkerton | Dysart |
| Elberon | Eldora | Elma |
| Ely | Evansdale | Fairbank |
| Fairfax | Fredericksburg | Frederika |
| Garrison | Garwin | Geneva |
| Gilbertville | Gladbrook | Greene |
| Grundy Center | Guernsey | Harper |
| Hartwick | Hazleton | Hiawatha |
| Hills | Holland | Homestead |
| Hopkinton | Hudson | Independence |
| Ionia | Iowa City | Janesville |
| Jesup | Kalona | Keota |
| Kesley | Keystone | La Porte City |
| Ladora | Lamont | Langworthy |
| Lincoln | Lisbon | Lost Nation |
| Lowden | Luzerne | Manchester |
| Maquoketa | Marble Rock | Marengo |
| Marion | Marshalltown | Martelle |
| Mason City | Masonville | Maynard |
| Mechanicsville | Middle Amana | Millersburg |
| Monmouth | Monticello | Morley |
| Morrison | Mount Auburn | Mount Vernon |
| Nashua | New Hampton | New Hartford |
| Newhall | Nora Springs | North English |
| North Liberty | Norway | Oelwein |
| Olin | Onslow | Oran |
| Oxford | Oxford Junction | Palo |
| Parkersburg | Parnell | Plainfield |
| Prairieburg | Quasqueton | Raymond |
| Readlyn | Reinbeck | Riverside |
| Robins | Rock Falls | Rockford |
| Rockwell | Rowley | Rudd |
| Ryan | Shell Rock | Shellsburg |
| Solon | South Amana | South English |
| Springville | Stanley | Stanwood |
| Steamboat Rock | Stout | Sumner |
| Swisher | Tama | Tiffin |
| Toddville | Toledo | Traer |
| Tripoli | Troy Mills | Urbana |
| Van Horne | Victor | Vining |
| Vinton | Viola | Walford |
| Walker | Washington | Waterloo |
| Watkins | Waverly | Webster |
| Wellman | Wellsburg | West Branch |
| West Chester | Westgate | Williamsburg |
| Winthrop | Wyoming |
