Decorah     

                                                  Spencer                                       Mason City

                                                                                  Algona                                                      Charles City
                                          Le Mars

                                                                                                                           New Hartford
                                                                        Storm Lake                                               Cedar Falls              Oelwein
                                      Sioux City                     Fort Dodge          Iowa Falls                                                             Dubuque

           Waterloo              
                                                      

                                             Denison                  Carroll                     Boone
                                                                                                                      Ames            Marshalltown                 Maquoketa

                                                                                        Perry                                                     Cedar Rapids                   Clinton

                                                                                                                                        Newton
                                                                                         Des Moines                                 Montezuma      Iowa City       Bettendorf

                                    Atlantic                                  Indianola                                           Sully                                     Davenport
                                                                 Winterset                                            

                             Council Bluffs                                                                           Oskaloosa    Washington
                                                                          Creston                 Chariton
                                                                                                                                        Ottumwa
                                            Shenandoah                                                                                     Burlington
                                                                     Lamoni              Centerville                        Fort Madison