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Octagonal tower of the chateau
Blason ville fr Trevoux (Ain).svg
Coat of arms
Location of Trévoux
France location map-Regions and departements-2016.svg
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Auvergne-Rhone-Alpes region location map.svg
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Coordinates: 45°56′28″N4°46′30″E / 45.9411°N 4.775000°E / 45.9411; 4.775000 Coordinates: 45°56′28″N4°46′30″E / 45.9411°N 4.775000°E / 45.9411; 4.775000
Country France
Region Auvergne-Rhône-Alpes
Department Ain
Arrondissement Bourg-en-Bresse
Canton Trévoux
Intercommunality Dombes Saône Vallée
  Mayor (20202026) Marc Péchoux
5.71 km2 (2.20 sq mi)
 (Jan. 2018) [1]
  Density1,200/km2 (3,100/sq mi)
Time zone UTC+01:00 (CET)
  Summer (DST) UTC+02:00 (CEST)
INSEE/Postal code
01427 /01600
Elevation167–256 m (548–840 ft)
(avg. 177 m or 581 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Trévoux (French pronunciation:  [tʁevu] ; Arpitan : Trevôrs) is a commune in the Ain department in eastern France. The inhabitants are known as Trévoltiens.


It is a suburb of Lyon, built on the steeply sloping left bank of the river Saône.


In AD 843, the treaty of Verdun divided up the empire of Charlemagne. The river Saône became the frontier between France and the Empire. It is thanks to this border location that Trévoux gained its particular political status.

In the 11th century it was included in the domain of the lords of Thoire-Villars, from whom it acquired its freedom. It was bought by the Bourbons in 1402, became the capital of the Dombes, and had its own mint. [2] From that time, the Trévoux river toll became important, and the town built a castle and walls.

On the 30th of June 1417, the local baron issued a decree allowing the local Jewish population to continue to study the Talmud, contrary to the decision taken in Chambéry in January 1417 as a result of which Jewish books had been seized and burned.

In 1523, the French king François the 1st confiscated the Dombes region and founded a parliament for the region in Lyon. In 1560, the Dombes region fell to the Bourbons. The town then became rich as the capital of Dombes principality and seat of its parliament from 1697 to 1771. In 1603 a printing works was established there, from which in the 18th century the Journal de Trévouse and a universal dictionary known as the Dictionnaire de Trévoux was printed there from 1704 to 1771 by the Jesuits. [2]

At the end of the 17th century, two important sovereign princes, Anne-Marie Louise of Orléans, Duchess of Montpensier known as "la Grande Mademoiselle", and her successor Louis-Auguste of Bourbon, duke of Maine, raised two monuments which are still notable in the landscape: the Montpensier hospital and the Palace of the Dombes Parliament.

In 1762, the principality of the Dombes was definitively absorbed into France.

The town was a sub-prefecture of Ain until 1926.

From the end of the 19th century until the 1950s, Trévoux was the global capital of the manufacture of synthetic diamonds.


Historical population


Trévoux was the birthplace of

See also

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The Formans is a small river in eastern France,. It rises in the Dombes plateau in the Ain department and the Auvergne-Rhône-Alpes region. It flows into the Saône between Saint-Bernard and Trévoux. It is 16.9 km (10.5 mi) long.


  1. "Populations légales 2018". INSEE. 28 December 2020.
  2. 1 2 Wikisource-logo.svg One or more of the preceding sentences incorporates text from a publication now in the public domain : Chisholm, Hugh, ed. (1911). "Trévoux". Encyclopædia Britannica . 27 (11th ed.). Cambridge University Press. p. 257.