| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Talleyville, New Castle | 19803 |
| Postal/ZIP Codes in Townsend, New Castle | 19734 |
| Postal/ZIP Codes in Wilmington, New Castle | 19801, 19802, 19803, 19804, 19805, … |
| Postal/ZIP Codes in Winterthur, New Castle | 19735 |
| Postal/ZIP Codes in Yorklyn, New Castle | 19736 |
| Postal Codes in Delaware | |
|---|---|
| Postal/ZIP Codes in Sussex | Postal/ZIP Codes in New Castle |
| Postal/ZIP Codes in Kent | |