| Prefecture | Area km² |
Population | Population density persons/km² |
Railways km |
Railway density km/1000 km² |
Railway penetration km/100000 persons |
| 01 Hokkaidō | 83,457 | 5,480,000 | 66 | 2216 | 27 | 40 |
| 02 Aomori | 9,645 | 1,350,000 | 140 | 666 | 69 | 49 |
| 03 Iwate | 15,279 | 1,300,000 | 85 | 939 | 61 | 72 |
| 04 Miyagi | 7,286 | 2,320,000 | 318 | 564 | 77 | 24 |
| 05 Akita | 11,636 | 1,060,000 | 91 | 600 | 52 | 57 |
| 06 Yamagata | 9,323 | 1,150,000 | 123 | 483 | 52 | 42 |
| 07 Fukushima | 13,783 | 1,960,000 | 142 | 846 | 61 | 43 |
| 08 Ibaraki | 6,096 | 2,950,000 | 484 | 441 | 72 | 15 |
| 09 Tochigi | 6,408 | 2,000,000 | 312 | 549 | 86 | 27 |
| 10 Gunma | 6,362 | 2,000,000 | 314 | 506 | 80 | 25 |
| 11 Saitama | 3,798 | 7,210,000 | 1898 | 724 | 191 | 10 |
| 12 Chiba | 5,157 | 6,200,000 | 1202 | 917 | 178 | 15 |
| 13 Tōkyō | 2,189 | 13,230,000 | 6044 | 1049 | 479 | 8 |
| 14 Kanagawa | 2,416 | 9,070,000 | 3754 | 706 | 292 | 8 |
| 15 Niigata | 15,584 | 2,350,000 | 151 | 1010 | 65 | 43 |
| 16 Toyama | 4,248 | 1,080,000 | 254 | 416 | 98 | 38 |
| 17 Ishikawa | 4,186 | 1,160,000 | 277 | 253 | 60 | 22 |
| 18 Fukui | 4,190 | 800,000 | 191 | 365 | 87 | 46 |
| 19 Yamanashi | 4,465 | 850,000 | 190 | 218 | 49 | 26 |
| 20 Nagano | 13,562 | 2,140,000 | 158 | 818 | 60 | 38 |
| 21 Gifu | 10,621 | 2,070,000 | 195 | 567 | 53 | 27 |
| 22 Shizuoka | 7,780 | 3,740,000 | 481 | 702 | 90 | 19 |
| 23 Aichi | 5,165 | 7,410,000 | 1435 | 935 | 181 | 13 |
| 24 Mie | 5,777 | 1,840,000 | 319 | 641 | 111 | 35 |
| 25 Shiga | 4,017 | 1,410,000 | 351 | 391 | 97 | 28 |
| 26 Kyōto | 4,613 | 2,630,000 | 570 | 528 | 115 | 20 |
| 27 Ōsaka | 1,899 | 8,860,000 | 4666 | 766 | 403 | 9 |
| 28 Hyōgo | 8,396 | 5,570,000 | 663 | 962 | 115 | 17 |
| 29 Nara | 3,691 | 1,390,000 | 377 | 259 | 70 | 19 |
| 30 Wakayama | 4,726 | 990,000 | 209 | 330 | 70 | 33 |
| 31 Tottori | 3,507 | 580,000 | 165 | 267 | 76 | 46 |
| 32 Shimane | 6,708 | 710,000 | 106 | 357 | 53 | 50 |
| 33 Okayama | 7,113 | 1,940,000 | 273 | 642 | 90 | 33 |
| 34 Hiroshima | 8,480 | 2,850,000 | 336 | 678 | 80 | 24 |
| 35 Yamaguchi | 6,114 | 1,430,000 | 234 | 700 | 115 | 49 |
| 36 Tokushima | 4,147 | 780,000 | 188 | 229 | 55 | 29 |
| 37 Kagawa | 1,877 | 990,000 | 527 | 222 | 118 | 22 |
| 38 Ehime | 5,678 | 1,420,000 | 250 | 336 | 59 | 24 |
| 39 Kōchi | 7,105 | 750,000 | 106 | 311 | 44 | 41 |
| 40 Fukuoka | 4,979 | 5,080,000 | 1020 | 808 | 162 | 16 |
| 41 Saga | 2,440 | 840,000 | 344 | 258 | 106 | 31 |
| 42 Nagasaki | 4,105 | 1,410,000 | 343 | 308 | 75 | 22 |
| 43 Kumamoto | 7,405 | 1,810,000 | 244 | 488 | 66 | 27 |
| 44 Ōita | 6,340 | 1,190,000 | 188 | 375 | 59 | 31 |
| 45 Miyazaki | 7,736 | 1,130,000 | 146 | 316 | 41 | 28 |
| 46 Kagoshima | 9,189 | 1,690,000 | 184 | 405 | 44 | 24 |
| 47 Okinawa | 2,276 | 1,410,000 | 620 | 17 | 7 | 1 |
| Total | 380,954 | 127,580,000 | 335 | 27083 | 71 | 21 |