| Official name | Japan (Nippon-koku / Nihon-koku) |
| Date established | 660 BCE (traditional founding); modern state 3 May 1947 (constitution) |
| Region | Asia — East Asia |
| Capital city | Tokyo |
| Population (2024 est.) | ~124 million |
| Area | 377,975 km² |
| Density | ~328/km² |
| Currency | Japanese yen (JPY) |
| Official language | Japanese |
| Time zone | JST (UTC+9) |
| Calling code | +81 |
| Major religions | Shinto, Buddhism; minority Christianity |
| Emergency – Police | 110 |
| Emergency – Rescue/Ambulance | 119 |
| National symbol | Chrysanthemum (Imperial), Mount Fuji |
| National flower | Cherry blossom (Sakura) |
| National animal | Japanese macaque, Koi fish (cultural) |
| National sport | Sumo; baseball very popular |
| Literacy rate | ~99% |
| Human Development Index | ~0.919 |
| GDP (nominal, 2024) | ~$4.2 trillion |
| Major industry | Automotive, electronics, robotics, shipbuilding, services |
| National festival | Emperor’s Birthday — 23 February; national holidays vary |
| Climate | Temperate; humid summers, cold winters in north, tropical south |
