| Locality | Post Code |
|---|---|
| Old Field, Suffolk | 11733 |
| Old Mastic, Suffolk | 11951 |
| Old Westfield, Suffolk | 11784 |
| Orient, Suffolk | 11957 |
| Orient Point, Suffolk | 11957 |
| Panamoka, Suffolk | 11961 |
| Patchogue, Suffolk | 11772 |
| Peconic, Suffolk | 11958 |
| Pine Air, Suffolk | 11717 |
| Pine Neck, Suffolk | 11963 |
| Point O Woods, Suffolk | 11706 |
| Poquott, Suffolk | 11733 |
| Port Jefferson, Suffolk | 11777 |
| Port Jefferson Station, Suffolk | 11776 |
| Promised Land, Suffolk | 11930 |
| Quioque, Suffolk | 11978 |
| Quogue, Suffolk | 11959 |
| Remsenburg, Suffolk | 11960 |
| Ridge, Suffolk | 11961 |
| Riverhead, Suffolk | 11901 |
| Rivers Edge, Suffolk | 11950 |
| Rocky Point, Suffolk | 11778 |
| Ronkonkoma, Suffolk | 11749, 11779 |
| Sag Harbor, Suffolk | 11963 |
| Sagaponack, Suffolk | 11962 |
| Saint James, Suffolk | 11780 |