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Coat of arms of Laconnex

Laconnex

Canton of Geneva · 713 inhabitants (31.12.2025)
View of Laconnex
Photo: Alexey M., CC BY-SA 4.0, Wikimedia Commons · Coat of arms: Public domain
Origin of the name Founding Historical timeline Population over time Must-see historical sites Remains Sources and references Nearby villages

Origin of the name Laconnex

Old forms « Laconay » in 1225 and « Lacunay » in 1231. According to a local explanation, the name reportedly comes from a certain Lacon, said to have settled in the area in the 1st century AD. This explanation is not confirmed.[3]

Founding of Laconnex

The village has been inhabited without interruption since Roman times, but it is not known who founded it. In the Middle Ages it belonged to the Count of Genève, who ceded all his rights over Laconnex to the priory of Saint-Victor. A fortified house and a parish church dedicated to Notre-Dame are later attested there. Its history is mainly one of changes of sovereignty between Genève, Savoy and the Kingdom of Sardinia, which took it into the Reformation and then back to Catholicism, until it was assigned to the canton of Genève. There it first formed a municipality with Avusy and Soral, then with Soral alone, before becoming an independent municipality.[2][3]

History of Laconnex

Roman times. The site is inhabited; it has been so without interruption ever since.

1225. Count William of Genève cedes all his rights over the village, then called « Laconay », to the priory of Saint-Victor.[3]

1231. The name appears in the form « Lacunay ».

15th century. Construction of a fortified house. Surnames still found today, such as Revaclier, Mermet and Du Crest (later Ducret), appear.[3]

1519. The Duke of Savoy has the prior François Bonivard imprisoned and replaces him with Jean de Brisset de Lacconay, lord of Laconnex. The village has a parish church dedicated to Notre-Dame.

1536. Laconnex adopts the Reformation; the parish is served by the pastor of Chancy.

1544. The Départ de Bâle (Basel arbitration) grants the benefice of Laconnex to Genève.

1564. The Treaty of Lausanne places the village under the dual sovereignty of Genève and Savoy.

17th century. The fortified house belongs to the la Grave family.

1754. The Treaty of Turin places Laconnex under the Kingdom of Sardinia. The village becomes Catholic again.

1816. The Treaty of Turin of 16 March gives Laconnex to the canton of Genève, where it forms a municipality with Avusy and Soral.[2][3]

1829. Creation of the parish of Laconnex-Soral.[2]

1848. Laconnex forms the municipality of Laconnex-Soral with Soral.

1850. The law of 9 November 1850 separates Laconnex and Soral. Laconnex becomes an independent municipality again.[2][3]

1951. Opening of the Laconnex-Soral-Avusy bus line.

2001. The population is mostly Catholic (parish of Soral-Laconnex), the Protestants belonging to the parish of the Champagne. Farmers make up more than half of the working population.

Population of Laconnex

Sources and references: [5]

Population of Laconnex
1860241
1900247
1950218
1970236
2000540
2025713

Historic sites in Laconnex

Parish church of Notre-Dame. Parish church dedicated to Notre-Dame, attested in 1519. After the Reformation of 1536 the parish is served by the pastor of Chancy. What became of it later is not known.

Genevan Champagne. Laconnex belongs to this farming region, which brings together seven municipalities: Aire-la-Ville, Avully, Avusy, Cartigny, Chancy, Laconnex and Soral.[3]

Remains in Laconnex

Fortified house. Fortified house built in the 15th century, owned by the la Grave family in the 17th century. The town hall stands today on the rue de la Maison-Forte. The fortified house (rue de la Maison-Forte 16) is a cultural property of regional importance (federal PCP inventory).[4]

Sources

  1. Dictionnaire historique de la Suisse, « Laconnex » (Catherine Santschi), version de 2006 remaniée le 10.03.2009
  2. Dictionnaire historique de la Suisse, « Soral » (Sybille Eyer Degennes), version de 2010 remaniée le 24.05.2013 (version allemande lue)
  3. Commune de Laconnex, « Histoire »
  4. Office fédéral de la protection de la population, Inventaire PBC, liste cantonale GE (état au 1.1.2026) : n° 2598, maison forte, rue de la Maison-Forte 16, objet B
  5. Office cantonal de la statistique (OCSTAT), Mémento statistique du canton de Genève 2026, tableau Population résidante par commune, en 2025
  6. geo.admin.ch, service de recherche de swisstopo (coordonnées)

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