| Name | Koshigaya |
| Office head of government | |
| Mayor | |
| Image |  |
| Area (m²) | 52,060,000 |
| Date founded | 03/11/1954 |
| Elevation (m) | 30 |
| Country | Japan |
| Administrative division | Saitama Prefecture |
| Continent | Asia |
| Latitude (°) | 35.8833351135 |
| Waterbody | |
| Longitude (°) | 139.7833404541 |
| Website | https://www.city.koshigaya.saitama.jp/ |
| Population (people) | 345,458 (01/10/2019) |
| Demonym |