17 cities
| City | 2025 Pop. ↓ |
|---|---|
| Utsunomiya | 517,568 |
| Uji | 192,925 |
| Ube | 173,733 |
| Urayasu | 143,758 |
| Ueda | 126,606 |
| Ushiku | 80,020 |
| Ueno-ebisumachi | 61,598 |
| Uwajima | 58,971 |
| Uozu | 45,848 |
| Umi | 39,772 |
| Uto | 39,234 |
| Usuki | 35,001 |
| Uekimachi-mono | 31,688 |
| Ujiie | 30,366 |
| Uenohara | 27,840 |
| Ureshinomachi-shimojuku | 18,953 |
| Ushibukamachi | 16,667 |