| Size km2 | Island | Population | City | % Correct |
|---|---|---|---|---|
| 227,960 | Honshu | 42,855,721 | Tokyo | 100%
|
| 83,424 | Hokkaido | 2,364,319 | Sapporo | 95%
|
| 36,782 | Kyushu | 3,178,950 | Fukuoka | 86%
|
| 1,206 | Okinawa | 1,107,229 | Okinawa | 77%
|
| 855 | Sado | 53,810 | Sado | 55%
|
| 712 | Amami Ōshima | 61,560 | Amami | 50%
|
| 505 | Yakushima | 12,079 | Yakushima | 50%
|
| 709 | Tsushima | 32,449 | Tsushima | 45%
|
| 18,802 | Shikoku | 622,068 | Matsuyama | 41%
|
| 592 | Awaji | 47,401 | Minamiawaji | 18%
|
| 574 | Shimoshima | 74,280 | Amakusa | 14%
|