| Locality | Post Code |
|---|---|
| Coggon, Delaware | 52218 |
| Colesburg, Delaware | 52035 |
| Delaware, Delaware | 52036 |
| Delhi, Delaware | 52223 |
| Dundee, Delaware | 52038 |
| Dutchtown, Delaware | 52057 |
| Dyersville, Delaware | 52040 |
| Earlville, Delaware | 52041 |
| Edgewood, Delaware | 52042 |
| Greeley, Delaware | 52050 |
| Hazel Green, Delaware | 52223 |
| Hopkinton, Delaware | 52237 |
| Manchester, Delaware | 52057 |
| Masonville, Delaware | 50654 |
| New Vienna, Delaware | 52065 |
| Oneida, Delaware | 52057 |
| Osterdock, Delaware | 52035 |
| Robinson, Delaware | 52330 |
| Ryan, Delaware | 52330 |
| Sand Spring, Delaware | 52237 |
| Strawberry Point, Delaware | 52076 |
| Thorpe, Delaware | 52057 |
| Worthington, Delaware | 52078 |