| 50654 Masonville | 563 | Delaware County | Iowa (IA) |
| 52035 Colesburg | 563 | Delaware County | Iowa (IA) |
| 52035 Osterdock | 563 | Delaware County | Iowa (IA) |
| 52036 Delaware | 563 | Delaware County | Iowa (IA) |
| 52038 Dundee | 563 | Delaware County | Iowa (IA) |
| 52041 Earlville | 563 | Delaware County | Iowa (IA) |
| 52050 Greeley | 563 | Delaware County | Iowa (IA) |
| 52057 Dutchtown | 563 | Delaware County | Iowa (IA) |
| 52057 Delaware | 563 | Delaware County | Iowa (IA) |
| 52057 Thorpe | 563 | Delaware County | Iowa (IA) |
| 52057 Oneida | 563 | Delaware County | Iowa (IA) |
| 52057 Manchester | 563 | Delaware County | Iowa (IA) |
| 52223 Delhi | 563 | Delaware County | Iowa (IA) |
| 52223 Hazel Green | 563 | Delaware County | Iowa (IA) |
| 52237 Hopkinton | 563 | Delaware County | Iowa (IA) |
| 52237 Sand Spring | 563 | Delaware County | Iowa (IA) |
| 52330 Robinson | 563 | Delaware County | Iowa (IA) |
| 52330 Ryan | 563 | Delaware County | Iowa (IA) |