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| (5) | Tochigi - Ibaraki |
| (10) | Hitachi Oyama Mito |
| (15) | NW Chiba Chōshi |
| (30) | Kashiwa Ushiku |
| Name | Major stations | Length (km) |
Comments |
| JR East | |||
| Jōban | [Abiko] - Toride - Sanuki - Tsuchiura - Ishioka - Tomobe - Mito - Katsuta - Ōmika - Hitachi - [Iwaki] | 145.3 | |
| Kashima | [Katori] - Kashima-jingū - Kashima Soccer Stadium | 13.3 | |
| Mito | [Oyama] - Shimodate - Tomobe | 47.8 | |
| Suigun | Mito - Kami-Sugaya - [Iwaki-Ishikawa] | 64.4 | |
| Suigun (Hitachi-Ōta branch) | Kami-Sugaya - Hitachi-Ōta | 9.5 | |
| Tōhoku Hon (Tōkyō - Kuroiso) | [Kurihashi] - Koga - [Oyama] | 6.0 | |
| Name | Major stations | Length (km) |
Comments |
| Hitachi | |||
| No specific linename | Ayukawa - Ōmika - Jōhoku-Ōta | 18.1 | Closed April 1, 2005 |
| Hitachinaka Kaihin | |||
| Minato | Katsuta - Ajigaura | 14.3 | |
| Kantō | |||
| Jōsō | Toride - Shimodate | 51.1 | |
| Ryūgasaki | Sanuki - Ryūgasaki | 4.5 | |
| Kashima | |||
| No specific linename | Ishioka - Hokota | 27.2 | Closed April 1, 2007 |
| Kashima Rinkai | |||
| Ōarai Kashima | Mito - Kashima Soccer Stadium - Kashima-jingū | 53.0 | |
| MIR | |||
| Tsukuba Express | [Kashiwa-Tanaka] - Moriya - Tsukuba | 24.2 | |
| Mōka | |||
| Mōka | Shimodate - [Mōka] | 7.6 | |
| Area km² | Population | Population density (persons/km²) | Railways (km) | |
| 6,096 | 2,971,747 | 487 | 441 | |
| Rank | 24 | 11 | 13 | 27 |
