Lista de ddi de cidades de Iowa – Estados Unidos
| CIDADE | CÓDIGO DDI |
| Ames | 1 515 |
| Ankeny | 1 515 |
| Atlantic | 1 712 |
| Bettendorf | 1 319 |
| Boone | 1 515 |
| Burlington | 1 319 |
| Carroll | 1 712 |
| Carrollton | 1 712 |
| Cedar Falls | 1 319 |
| Cedar Rapids | 1 319 |
| Charles City | 1 515 |
| Clear Lake | 1 515 |
| Clearfield | 1 515 |
| Clinton | 1 319 |
| Coralville | 1 319 |
| Council Bluffs | 1 712 |
| Creston | 1 515 |
| Davenport | 1 319 |
| Decorah | 1 319 |
| Des Moines | 1 515 |
| Dubuque | 1 319 |
| Fairfax | 1 319 |
| Fairfield | 1 515 |
| Fort Atkinson | 1 319 |
| Fort Dodge | 1 515 |
| Fort Madison | 1 319 |
| Grandview | 1 319 |
| Grinnell | 1 515 |
| Indianola | 1 515 |
| Iowa City | 1 319 |
| Keokuk | 1 319 |
| Knox Ville | 1 641 |
| Knoxville | 1 515 |
| Lansing | 1 319 |
| Le Mars | 1 712 |
| Marion | 1 319 |
| Marshalltown | 1 515 |
| Muscatine | 1 319 |
| Newton | 1 515 |
| Oskaloosa | 1 515 |
| Ottumwa | 1 515 |
| Pella | 1 515 |
| Sioux City | 1 712 |
| Spencer | 1 712 |
| Storm Lake | 1 712 |
| Urbana | 1 319 |
| Waterloo | 1 319 |
| Waterville | 1 319 |
| Waverly | 1 319 |
| Webster City | 1 515 |
| West Bend | 1 515 |
| West Chester | 1 319 |
| West Point | 1 319 |
