| Lines |
| Lines | Sections | Areas |
|---|
| Chitose Line | Sapporo <-> Tomakomai, Minami-chitose <-> New Chitose Airport | Do-o |
| Esashi Line | Hakodate <-> Esashi | Donan |
| Furano Line | Asahikawa <-> Tomakomai | Dohoku |
| Gakuen-toshi Line | Sapporo <-> Hokkaido-iryo-daigaku | Do-o |
| Hakodate Line 1 | Hakodate <-> Oshamambe, Onuma <-> Mori | Donan |
| Hakodate Line 2 | Oshamambe <-> Otaru | Do-o |
| Hakodate Line 3 | Otaru <-> Iwamizawa | Do-o |
| Hakodate Line 4 | Iwamizawa <-> Asahikawa | Dohoku |
| Hanasaki Line(Nemuro Line 3) | Kushiro <-> Nemuro | Doto |
| Hidaka Line | Tomakomai <-> Samani | Donan |
| Muroran Line 1 | Oshamambe <-> Tomakomai, Higashi-muroran <-> Muroran | Donan |
| Muroran Line 2 | (Tomakomai <-> )Kuriyama <-> Iwamizawa | Do-o |
| Nemuro Line 1 | Takikawa <-> Obihiro | Doto |
| Nemuro Line 2 | Obihiro <-> Urahoro(<-> Kushiro) | Doto |
| Nemuro Line 3(Hanasaki Line) | Kushiro <-> Nemuro | Doto |
| Rumoi Line | Fukagawa <-> Mashike | Dohoku |
| Sassho Line | Ishikari-tobetsu <-> Shin-totsukawa | Do-o |
| Sekihoku Line | Asahikawa <-> Abashiri | Doto |
| Sekisho Line | Minami-chitose <-> Shintoku, Shin-yubari <-> Yubari | Do-o |
| Semmo Line | Abashiri <-> Kushiro | Doto |
| Soya Line 1 | Asahikawa <-> Nayoro | Dohoku |
| Soya Line 2 | Nayoro <-> Wakkanai | Dohoku |
| Tsugaru-kaikyo Line | Aomori <-> Hakodate | Donan |