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Skyline of Chaumont-Gistoux
Coat of arms of Chaumont-Gistoux
Coat of arms
Chaumont-Gistoux is located in Belgium
Location in Belgium
The municipality of Chaumont-Gistoux in Walloon Brabant
Chaumont-Gistoux Brabant-Wallon Belgium Map.png
Coordinates: 50°40′37″N 4°43′10″E / 50.67686°N 4.71956°E / 50.67686; 4.71956Coordinates: 50°40′37″N 4°43′10″E / 50.67686°N 4.71956°E / 50.67686; 4.71956
CommunityFrench Community
ProvinceWalloon Brabant
 • MayorLuc Decorte (ARC)
 • Governing party/iesARC, Ecolo
 • Total48.09 km2 (18.57 sq mi)
 • Total11,731
 • Density240/km2 (630/sq mi)
Postal codes
Area codes010

Chaumont-Gistoux (Walloon: Tchåmont-Djistou) is a Walloon municipality located in the Belgian province of Walloon Brabant. On 1 January 2006 Chaumont-Gistoux had a total population of 10,926. The total area is 48.09 km² which gives a population density of 227 inhabitants per km².

It was formed from the fusion, in 1977, of Dion-Valmont (itself a fusion in 1971 of Dion-le-Val and Dion-le-Mont), Bonlez, Corroy-le-Grand, Longueville and Chaumont-Gistoux. The administrative offices are now in the village of Gistoux.

It is a semi-rural municipality with several working farms, large areas given over to fields and forests, although there is a major industry of sand extraction, now mostly in decline. Due to this history there are now several haulage and construction firms based in the municipality.

Chaumont-Gistoux is on the KW-line, a defensive line erected early in the Second World War, intended to prevent invasion from Germany. A small museum houses information about the line and many exhibits from the war.

Her Royal Highness Princess Claire of Belgium grew up in Chaumont-Gistoux. The Coombs family still resides there to this day, and the Princess, her husband Prince Laurent and their children are often seen in the municipality.

Villages in the municipality[edit]

Bonlez, Chaumont, Corroy-le-Grand, Dion-le-Mont, Dion-le-Val, Gistoux, Longueville and Vieusart or (Vieux-Sart).[a]



  1. ^ "Wettelijke Bevolking per gemeente op 1 januari 2018". Statbel. Retrieved 9 March 2019.

External links[edit]