| Locality | Post Code |
|---|---|
| Misumicho (大東市) | 574-0027 |
| Morofuku (大東市) | 574-0044 |
| Nakagaito (大東市) | 574-0013 |
| Nakakusunosatocho (大東市) | 574-0006 |
| Nangocho (大東市) | 574-0063 |
| Nishikicho (大東市) | 574-0002 |
| Nishikusunosatocho (大東市) | 574-0005 |
| Nozaki (大東市) | 574-0015 |
| Ogimachi (大東市) | 574-0033 |
| Ono (大東市) | 574-0042 |
| Others (大東市) | 574-0000 |
| Saiwaicho (大東市) | 574-0028 |
| Sanga (大東市) | 574-0077 |
| Sanyocho (大東市) | 574-0035 |
| Shimmachi (大東市) | 574-0037 |
| Shinden Asahimachi (大東市) | 574-0053 |
| Shinden Higashihommachi (大東市) | 574-0054 |
| Shinden Hommachi (大東市) | 574-0055 |
| Shinden Kitamachi (大東市) | 574-0052 |
| Shinden Nakamachi (大東市) | 574-0056 |
| Shinden Nishimachi (大東市) | 574-0057 |
| Shinden Sakaimachi (大東市) | 574-0051 |
| Suehirocho (大東市) | 574-0036 |
| Suminodo (大東市) | 574-0026 |
| Tanigawa (大東市) | 574-0074 |
| Tashiden (大東市) | 574-0045 |