| Locality | Postal Code |
|---|---|
| Azo (大洲市) | 795-0025 |
| Fujinawa (大洲市) | 795-0076 |
| Goro (大洲市) | 795-0051 |
| Haruka (大洲市) | 795-0046 |
| Hatakicho (大洲市) | 795-0041 |
| Higashiozu (大洲市) | 795-0064 |
| Higashiuyama (大洲市) | 795-0045 |
| Higashiwakamiya (大洲市) | 795-0065 |
| Hijikawacho Myogadani (大洲市) | 797-1502 |
| Hijikawacho Nakaidani (大洲市) | 797-1501 |
| Hijikawacho Nakatsu (大洲市) | 797-1506 |
| Hijikawacho Nishi (大洲市) | 797-1508 |
| Hijikawacho Otani (大洲市) | 797-1507 |
| Hijikawacho Uwagawa (大洲市) | 797-1503 |
| Hijikawacho Yamatosaka (大洲市) | 797-1504 |
| Hijikawacho Yokohayashi (大洲市) | 797-1505 |
| Hiranochohiraji (大洲市) | 795-0022, 795-0023 |
| Hiranochonoda (大洲市) | 795-0021 |
| Ichigi (大洲市) | 795-0062 |
| Inazumi (大洲市) | 795-0007 |
| Kaikawa Ko (大洲市) | 799-3421 |
| Kamisugai (大洲市) | 795-0032 |
| Kawabecho Kawakami (大洲市) | 797-1607 |
| Kawabecho Kawasaki (大洲市) | 797-1604 |
| Kawabecho Kawato (大洲市) | 797-1605 |
| Kawabecho Kitahira (大洲市) | 797-1608 |