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Saint-Nom-la-Bretèche
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Saint-Nom-la-Bretèche

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Also known as Union-la-Montagne

Saint-Nom-la-Bretèche () is a commune in the Yvelines department in the Île-de-France region in north-central France.

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Place details

Locality
Saint-Nom-la-Bretèche
Region
Île-de-France
Country
France
Population
4,828

via OpenStreetMap · GeoNames

Air quality

51US AQIModerate
PM2.5
7.5 µg/m³
PM10
14.2 µg/m³
As of 2026-08-15 07:00 · Open-Meteo

Key facts

French commune.name
Saint-Nom-la-Bretèche
French commune.commune status
Commune
French commune.image
Saint-Nom-la-Bretèche Mairie.JPG
French commune.caption
Town hall
French commune.image coat of arms
Blason ville fr Saint-Nom-la-Bretèche (Yvelines).svg
French commune.arrondissement
Saint-Germain-en-Laye
French commune.canton
Verneuil-sur-Seine
French commune.INSEE
78571
French commune.postal code
78860
French commune.demonym
Nonnais-Bretêchois
French commune.mayor
Gilles Studnia
French commune.term
2020–2026
French commune.intercommunality
CC Gally Mauldre
French commune.elevation m
144.5
French commune.elevation min m
112.8
French commune.elevation max m
187.5
French commune.area km2
48.27

via Wikipedia infobox

Wikidata facts

Official name
Union-la-Montagne
Country
France
Population
4965
Area
11.74
Elevation
140
Time zone
UTC+02:00
Shares border with
Saint-Germain-en-Laye
Image
Saint-Nom-la-Bretèche Mairie.JPG
Show 9 more facts
Commons category
Saint-Nom-la-Bretèche
postal code
78860
associated electoral district
canton of Verneuil-sur-Seine
male population
2410
female population
2501
phone number
+33-1-30-80-07-00
fax number
+33-1-30-56-60-61
twinned administrative body
Rösrath
Sources (9)

via Wikidata · CC0

~7 min read

Encyclopedic overview

21 sections
Contents
  • History
  • Population
  • Transport
  • Golf course
  • History
  • Origin of the Trophée Lancôme
  • Sights
  • Ferme de Saint-Nom
  • Chateau of la Bretèche
  • Ferme de Valmartin
  • Tuilerie-Bignon
  • Church of Saint Nom
  • Forêt de Marly
  • Other notable historical structures
  • Gallery
  • Coat of arms
  • Notable people
  • Twin towns
  • See also
  • References
  • External links

Saint-Nom-la-Bretèche () is a commune in the Yvelines department in the Île-de-France region in north-central France.

==History== Saint-Nom-la-Bretèche was built around 4 core hamlets near the Forest of Marly. The village takes its name from a 9th-century co-bishop, saint Nonne, who re-evangelized the country after the Norman invasions, and from La Bretesche, a wooden stronghold (from breit eiche: big oak tree) consisting of a hamlet at the edge of the forest of Cruye, now the forest of Marly.

Excerpted from Wikipedia’s “Saint-Nom-la-Bretèche” article, available under the CC BY-SA 4.0 licence.

Gallery (3)

On the map

2 mapped locations