| Postal Code | Locality / District | Administrative Area | Coordinates |
|---|---|---|---|
| 1st Arrondissement | 1st Arrondissement District · Littoral | 6.3662, 2.47551 | |
| 1st Arrondissement North | 1st Arrondissement District · Littoral | 6.3742, 2.48351 | |
| 2nd Arrondissement | 2nd Arrondissement District · Littoral | 6.3871, 2.45946 | |
| 2nd Arrondissement North | 2nd Arrondissement District · Littoral | 6.3951, 2.46746 | |
| 3rd Arrondissement | 3rd Arrondissement District · Littoral | 6.39026, 2.4417 | |
| 3rd Arrondissement North | 3rd Arrondissement District · Littoral | 6.39826, 2.4497 | |
| Abokicodji | 6th Arrondissement District · Littoral | 6.35912, 2.44497 | |
| 6th Arrondissement | 6th Arrondissement District · Littoral | 6.38359, 2.43897 | |
| Cadjèhoun | 7th Arrondissement District · Littoral | 6.35, 2.4 | |
| Dandji | 7th Arrondissement District · Littoral | 6.37034, 2.39086 | |
| Alohovè | 8th Arrondissement District · Littoral | 6.33333, 2.23333 | |
| 8th Arrondissement | 8th Arrondissement District · Littoral | 6.39135, 2.39667 | |
| Segbeya | Cotonou · Littoral | 6.37806, 2.44306 | |
| Zogbo | Cotonou · Littoral | 6.39213, 2.38281 |
Postal code prefix 18 in Benin covers 14 localities (primarily in Littoral, including 1st Arrondissement), spanning from 18000 to 18601.
There are 14 active postal codes starting with 18 in Benin. Use the interactive directory table above to filter by locality or copy any code in one click.