| Locality | Post Code |
|---|---|
| Ocean Reef Club, Monroe | 33037 |
| Plantation Key, Monroe | 33036, 33070 |
| Raccoon Key, Monroe | 33040 |
| Ramrod Key, Monroe | 33042 |
| Stock Island, Monroe | 33040 |
| Sugarloaf, Monroe | 33042 |
| Sugarloaf Key, Monroe | 33042 |
| Sugarloaf Shores, Monroe | 33042 |
| Summerland Key, Monroe | 33042 |
| Tavernier, Monroe | 33070 |
| Upper Key Largo, Monroe | 33037 |
| Upper Matecumbe Key, Monroe | 33036 |
| Upper Sugarloaf Key, Monroe | 33042 |
| Venetian Shores, Monroe | 33036 |
| Windley Key, Monroe | 33036 |