Allier
| Allier | |
|---|---|
| Prefecture building in Moulins | |
| Location of Allier in France | |
| Coordinates: 46°20′N 3°10′E / 46.333°N 3.167°E | |
| Country | France | 
| Region | Auvergne-Rhône-Alpes | 
| Prefecture | Moulins | 
| Subprefectures | Montluçon Vichy | 
| Government | |
| • President of the Departmental Council | Claude Riboulet (UDI) | 
| Area | |
|  • Total | 7,340 km2 (2,830 sq mi) | 
| Population  (2022) | |
|  • Total | 334,715 | 
| • Rank | 69th | 
| • Density | 46/km2 (120/sq mi) | 
| Time zone | UTC+1 (CET) | 
| • Summer (DST) | UTC+2 (CEST) | 
| Department number | 03 | 
| Arrondissements | 3 | 
| Cantons | 19 | 
| Communes | 317 | 
| ^1 French Land Register data, which excludes estuaries, and lakes, ponds, and glaciers larger than 1 km2 | |
Allier (UK: /ˈælieɪ/ AL-ee-ay, US: /ælˈjeɪ, ɑːlˈjeɪ/ a(h)l-YAY, French: [alje] ⓘ; Occitan: Alèir) is a department in the Auvergne-Rhône-Alpes region that borders Cher to the west, Nièvre to the north, Saône-et-Loire and Loire to the east, Puy-de-Dôme to the south, and Creuse to the south-west. Named after the river Allier, it had a population of 334,872 in 2021. Moulins is the prefecture; Montluçon and Vichy are the subprefectures. Its INSEE and post code is 03.
Before 2018, the inhabitants of the department did not have a demonym. The inhabitants of the department have officially been known in French as Bourbonnais since 2018, a reference to the historic province of Bourbonnais. Until then, the unofficial term Elavérins had been used.