| Localité | Code postal |
|---|---|
| Adelphi, Saint James | JMCJS01 |
| Albion, Saint James | JM00000 |
| Anchovy, Saint James | JMCJS02 |
| Arcadia, Saint James | JM00000 |
| Barrett Town, Saint James | JM00000 |
| Bickersteth, Saint James | JM00000 |
| Bogue, Saint James | JM00000 |
| Brandon Hill, Saint James | JM00000 |
| Cambridge, Saint James | JMCJS03 |
| Canterbury, Saint James | JM00000 |
| Catadupa, Saint James | JMCJS04 |
| Catherine Mount, Saint James | JM00000 |
| Comfort Hall, Saint James | JM00000 |
| Coral Gardens, Saint James | JM00000 |
| Cornwall, Saint James | JM00000 |
| Down Town Montego Bay, Saint James | JM00000 |
| Dumfries, Saint James | JM00000 |
| Fairfield, Saint James | JM00000 |
| Farm Heights, Saint James | JM00000 |
| Flagstaff, Saint James | JM00000 |
| Flamstead, Saint James | JM00000 |
| Flankers, Saint James | JM00000 |
| Flower Hill, Saint James | JM00000 |
| Friendship, Saint James | JM00000 |
| Glendevon, Saint James | JM00000 |
| Goodwill, Saint James | JM00000 |