Firminy
| Firminy | |
|---|---|
| Location of Firminy | |
| Coordinates: 45°23′20″N 4°17′16″E / 45.3889°N 4.2878°E | |
| Country | France | 
| Region | Auvergne-Rhône-Alpes | 
| Department | Loire | 
| Arrondissement | Saint-Étienne | 
| Canton | Firminy | 
| Intercommunality | Saint-Étienne Métropole | 
| Government | |
| • Mayor (2020–2026) | Julien Luya | 
| Area 1 | 10.45 km2 (4.03 sq mi) | 
| Population  (2022) | 17,128 | 
| • Density | 1,600/km2 (4,200/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code | 42095 /42700 | 
| Elevation | 446–800 m (1,463–2,625 ft) (avg. 468 m or 1,535 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Firminy (French pronunciation: [fiʁmini]; Occitan: Frominiu) is a commune in the Loire department in central France.
It lies on the river Ondaine, 13 km southwest of Saint-Étienne by rail.