| Name | Seinäjoki |
| Office head of government | |
| Mayor | |
| Image |  |
| Area (m²) | 1,469,229,952 |
| Date founded | 1868 |
| Elevation (m) | |
| Country | Finland |
| Administrative division | Southern Ostrobothnia |
| Continent | Europe |
| Latitude (°) | 62.7916679382 |
| Waterbody | |
| Longitude (°) | 22.8416671753 |
| Website | http://www.seinajoki.fi/ |
| Population (people) | 62,676 (31/12/2017) |
| Demonym |