Koga, Ibaraki
Koga
古河市 | |
|---|---|
Koga city hall | |
Location of Koga in Ibaraki Prefecture | |
| Coordinates: 36°10′41.7″N 139°45′19.6″E / 36.178250°N 139.755444°E | |
| Country | Japan |
| Region | Kantō |
| Prefecture | Ibaraki |
| Government | |
| • Mayor | Chikara Hariya (since December 2016) |
| Area | |
• Total | 123.58 km2 (47.71 sq mi) |
| Population (January 2024) | |
• Total | 137,512 |
| • Density | 1,100/km2 (2,900/sq mi) |
| Time zone | UTC+9 (Japan Standard Time) |
| Phone number | 0280-92-3111 |
| Address | 2248 Shimoōno, Koga-shi, Ibaraki-ken 306-0291 |
| Climate | Cfa |
| Website | Official website |
| Symbols | |
| Flower | Prunus persica |
| Tree | Zelkova serrata |
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Koga (古河市, Koga-shi) is a city located in Ibaraki Prefecture, Japan. As of 1 January 2024, the city had an estimated population of 137,512 in 58,276 households and a population density of 1113 persons per km². The percentage of the population aged over 65 was 28.98%. The total area of the city is 123.58 square kilometres (47.71 sq mi).