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Prefecture building of the Isère department, in Grenoble
Prefecture building of the Isère department, in Grenoble
Flag of Isère
Coat of arms
Coat of arms
Location of Isère in France
Location of Isère in France
Country France
Region Auvergne-Rhône-Alpes
Département 1790
Prefecture Grenoble
Subprefectures La Tour-du-Pin, Vienne
 • Total 7,431.5 km2 (2,869.3 sq mi)
 • Total 1,243,597
 • Density 167.3413/km2 (433.4120/sq mi)
Demonym(s) Isérois or Iserans
Time zone UTC+1 (CET)
 • Summer (DST) UTC+2 (CEST)
ISO 3166 code FR-38
Arrondissements 3
Cantons 29
Communes 521

Isère is a département in the Auvergne-Rhône-Alpes region in eastern France named after the Isère river.


Isère is one of the original 83 departments created during the French Revolution on 4 March 1790 with Moirans as its capital. It was formed from part of the former province of Dauphiné.

It was divided in four districts: Grenoble, Saint-Marcellin, La Tour-du-Pin and Vienne. The capital was transfered in 1790 from Moirans to Grenoble.

In 1800, with the creation of the arrondissements in France, the four districts were changed into four arrondissements: Grenoble, Saint-Marcellin, La Tour-du-Pin and Vienne.

On 10 September 1926, the arrondissement of Saint-Marcellin was eliminated.


Isère is part of the Auvergne-Rhône-Alpes region. It has an area of 7,431.5 km2 (2,869 sq mi).

The department borders with 7 departments in 2 regions:

The highest mountain in the department is Pic Lory (44°55′21″N 06°21′24″E / 44.92250°N 6.35667°E / 44.92250; 6.35667 (Pic Lory)); it is 4,088 m (13,412 ft) high.

The main rivers that flow through the department are the Rhône and its tributaries Isère and Bourbre.


The Köppen climate classification type for the climate at Grenoble is an "Oceanic climate" (also known as Maritime Temperate climate) and of the subtype Cfb.


Isère is managed by the Departmental Council of Isère in Grenoble. The department is part of the Auvergne-Rhône-Alpes region.

Administrative divisions

There are 4 arrondissements (districts), 17 cantons and 281 communes (municipalities) in Isère.

Arrondissements of the Isère
Arrondissement Capital Population
381 Grenoble Grenoble 758,956 4,714.7 161.0 267
382 La Tour-du-Pin La Tour-du-Pin 270,681 1,489.7 181.7 137
383 Vienne Vienne 213,960 1,227.1 174.4 117

The following is a list of the 29 cantons of the Isère department (with their INSEE codes), following the French canton reorganisation which came into effect in March 2015:

  1. Bièvre (3801)
  2. Bourgoin-Jallieu (3802)
  3. Chartreuse-Guiers (3803)
  4. Charvieu-Chavagneux (3804)
  5. Échirolles (3805)
  6. Fontaine-Seyssinet (3806)
  7. Fontaine-Vercors (3807)
  8. Le Grand-Lemps (3808)
  9. Grenoble-1 (3809)
  10. Grenoble-2 (3810)
  11. Grenoble-3 (3811)
  12. Grenoble-4 (3812)
  13. Le Haut-Grésivaudan (3813)
  14. L’Isle-d'Abeau (3814)
  15. Matheysine-Trièves (3815)
  16. Meylan (3816)
  17. Morestel (3817)
  18. Le Moyen Grésivaudan (3818)
  19. Oisans-Romanche (3819)
  20. Le Pont-de-Claix (3820)
  21. Roussillon (3821)
  22. Saint-Martin-d'Hères (3822)
  23. Le Sud Grésivaudan (3823)
  24. La Tour-du-Pin (3824)
  25. Tullins (3825)
  26. La Verpillière (3826)
  27. Vienne-1 (3827)
  28. Vienne-2 (3828)
  29. Voiron (3829)


The inhabitants of Isère are known, in French, as Isérois (women: Iséroises).

Isère had a population, in 2014, of 1,243,597, for a population density of 167.3 inhabitants/km2. The arrondissement of Grenoble, with 758,956 inhabitants, is the arrondissement with more inhabitants.

Evolution of the population in Isère

The communes in the department with more inhabitants are:

City Population
Grenoble 160,779 Grenoble
Saint-Martin-d'Hères 38,100 Grenoble
Échirolles 35,875 Grenoble
Vienne 29,096 Vienne
Bourgoin-Jallieu 27,366 La Tour-du-Pin
Fontaine 22,366 Grenoble
Voiron 20,162 Grenoble
Villefontaine 18,463 La Tour-du-Pin
Meylan 17,323 Grenoble
L'Isle-d'Abeau 16,040 La Tour-du-Pin


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