| Locality | Post Code |
|---|---|
| Minamidambaramachi (宇土市) | 869-0421 |
| Miyanoshomachi (宇土市) | 869-0457 |
| Mizumachi (宇土市) | 869-0411 |
| Monnaimachi (宇土市) | 869-0434 |
| Nagahamamachi (宇土市) | 869-3171 |
| Nozurumachi (宇土市) | 869-0463 |
| Others (宇土市) | 869-0400 |
| Sajitcho (宇土市) | 869-0406 |
| Sakaemachi (宇土市) | 869-0453 |
| Sakaimemachi (宇土市) | 869-0417 |
| Sasawaramachi (宇土市) | 869-0402 |
| Sembamachi (宇土市) | 869-0443 |
| Shimmachi (宇土市) | 869-0444 |
| Shimmatsuwaramachi (宇土市) | 869-0419 |
| Shimmemachi (宇土市) | 869-0424 |
| Shimoudamachi (宇土市) | 869-3173 |
| Shingaimachi (宇土市) | 869-0403 |
| Shinkojimachi (宇土市) | 869-0433 |
| Sumiyoshimachi (宇土市) | 869-0401 |
| Tachiokamachi (宇土市) | 869-0414 |
| Takayanagimachi (宇土市) | 869-0452 |
| Toguchimachi (宇土市) | 869-3174 |
| Tsubawaramachi (宇土市) | 869-0455 |
| Tsuigomemachi (宇土市) | 869-0408 |
| Umanosemachi (宇土市) | 869-0405 |
| Uratamachi (宇土市) | 869-0445 |