| Locality | Postal Code |
|---|---|
| Akabanacho (大垣市) | 503-0013 |
| Akasakacho (大垣市) | 503-2213 |
| Akasaka Daimon (大垣市) | 503-2215 |
| Akasaka Higashimachi (大垣市) | 503-2212 |
| Akasaka Shimmachi (大垣市) | 503-2206 |
| Akasaka Shinden (大垣市) | 503-2214 |
| Aohakacho (大垣市) | 503-2221 |
| Aokicho (大垣市) | 503-2202 |
| Aonocho (大垣市) | 503-2227 |
| Aoyanagicho (大垣市) | 503-0961 |
| Arakawacho (大垣市) | 503-0993 |
| Araocho (大垣市) | 503-0034 |
| Araotamaike (大垣市) | 503-0035 |
| Asahimachi (大垣市) | 503-0824 |
| Asakusa (大垣市) | 503-0947 |
| Asanaka (大垣市) | 503-0946 |
| Asanishi (大垣市) | 503-0945 |
| Ayano (大垣市) | 503-0984 |
| Ayanocho (大垣市) | 503-0994 |
| Azumacho (大垣市) | 503-0802 |
| Babacho (大垣市) | 503-0922 |
| Bangumicho (大垣市) | 503-0907 |
| Chidoricho (大垣市) | 503-0891 |
| Daikancho (大垣市) | 503-0895 |
| Ebisucho (大垣市) | 503-0828 |
| Ebisucho Kita (大垣市) | 503-0826 |