| Postal Code | Area | |
|---|---|---|
| 048-0101 | Kuromatsunai (黒松内) | View |
| 048-0111 | Nakasato (中里) | View |
| 048-0112 | Kaikara (貝殻) | View |
| 048-0113 | Toyohoro (豊幌) | View |
| 048-0114 | Utasai (歌才) | View |
| 048-0115 | Nishinosawa (西沢) | View |
| 048-0116 | Asahino (旭野) | View |
| 048-0117 | Soibetsu (添別) | View |
| 048-0121 | Neppu (熱郛) | View |
| 048-0122 | Shirozumi (白炭) | View |
| 048-0123 | Nakanokawa (中ノ川) | View |
| 048-0124 | Igarashi (五十嵐) | View |
| 048-0125 | Mena (目名) | View |
| 048-0126 | Kitasakkai (北作開) | View |
| 048-0127 | Minamisakkai (南作開) | View |
| 048-0131 | Nishineppugenya (西熱郛原野) | View |
| 048-0132 | Choposhinai (チョポシナイ) | View |
| 048-0133 | Oyachi (大谷地) | View |
| 048-0134 | Shiroikawa (白井川) | View |
| 048-0135 | Kakuju (角十) | View |