# Bailly

> commune in Yvelines, France

**Wikidata**: [Q83439](https://www.wikidata.org/wiki/Q83439)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Bailly,_Yvelines)  
**Source**: https://4ort.xyz/entity/bailly-q83439-2

## Summary
Bailly is a commune located in the Yvelines department within the Île-de-France region of France. Situated in the arrondissement of Saint-Germain-en-Laye, it serves as a municipal entity with a population fluctuating between approximately 3,600 and 4,000 residents. The commune is geographically defined by coordinates 48.841388888889° N, 2.0772222222222° E and maintains an official municipal website.

## Key Facts
- **Entity Type**: Commune of France (territorial subdivision for municipalities).
- **Location**: Yvelines department, Île-de-France region, France.
- **Administrative Arrondissement**: Saint-Germain-en-Laye (inception: November 9, 1962).
- **Historical Administrative Context**: Formerly part of the Seine-et-Oise department (1790–1968).
- **Coordinates**: Latitude 48.841388888889, Longitude 2.0772222222222.
- **Population Data Points**: 3,886; 3,932; 3,975; 3,721; 3,615; 3,733; 3,692; 3,650; 3,690; 3,731.
- **Official Website**: https://www.mairie-bailly.fr/.
- **Wikipedia Title**: Bailly, Yvelines.
- **Wikidata Description**: Commune in Yvelines, France.
- **Sitelink Count**: 42 (indicating presence on 42 language versions of Wikipedia).
- **Country**: France (Western Europe, with overseas territories).
- **Department Inception**: Yvelines established on January 1, 1968.
- **Former Department Inception**: Seine-et-Oise established on March 4, 1790.

## FAQs
**What is the administrative status and location of Bailly?**
Bailly is a commune situated in the Yvelines department of the Île-de-France region in France. It falls under the jurisdiction of the arrondissement of Saint-Germain-en-Laye, which was established in November 1962.

**How has the population of Bailly changed over time?**
The population of Bailly has varied across recorded census periods, with figures ranging from a low of 3,615 to a high of 3,975. Specific recorded counts include 3,886, 3,932, 3,721, 3,733, 3,692, 3,650, 3,690, and 3,731.

**What historical administrative divisions did Bailly belong to?**
Prior to the creation of the Yvelines department on January 1, 1968, Bailly was part of the Seine-et-Oise department. The Seine-et-Oise department itself was established on March 4, 1790, and existed until 1968.

**Where can one find official information about the municipality?**
Official information regarding the commune is available through its dedicated municipal website at https://www.mairie-bailly.fr/. The entity is also documented on Wikipedia under the title "Bailly, Yvelines."

## Why It Matters
Bailly matters as a specific example of the complex administrative evolution of the Île-de-France region, particularly regarding the reorganization of departments in 1968. As a commune, it represents the foundational level of French local governance, directly serving a population of nearly 4,000 residents. Its existence highlights the transition from the historic Seine-et-Oise department to the modern Yvelines department, a shift that reshaped local administration across the Parisian suburbs. The commune's digital presence and detailed demographic records contribute to the broader understanding of population distribution and municipal management in France.

## Notable For
- **Administrative Reorganization**: A key entity in the transition from the former Seine-et-Oise department to the current Yvelines department in 1968.
- **Geographic Precision**: Defined by exact coordinates of 48.841388888889° N and 2.0772222222222° E.
- **Demographic Stability**: Maintains a consistent population range between 3,600 and 4,000 residents across multiple census periods.
- **Digital Accessibility**: Maintains an active official municipal website for public services and information.
- **Global Recognition**: Documented across 42 different language versions of Wikipedia, indicating international interest or diaspora connection.
- **Historical Continuity**: Part of a lineage of French territorial subdivisions dating back to the inception of the commune system in 1789.

## Body

### Geographic and Administrative Location
Bailly is a commune located in the Yvelines department, which is part of the Île-de-France region in France. Geographically, the commune is positioned at latitude 48.841388888889 and longitude 2.0772222222222. Administratively, it belongs to the arrondissement of Saint-Germain-en-Laye. This arrondissement was established on November 9, 1962, and serves as a sub-division of the Yvelines department. The commune is a territorial subdivision of France, specifically categorized as a municipality.

### Historical Administrative Context
The administrative history of Bailly is tied to the evolution of French departments. Before 1968, the commune was part of the Seine-et-Oise department. The Seine-et-Oise department was created on March 4, 1790, and existed until its dissolution. On January 1, 1968, the Yvelines department was established, and Bailly became part of this new entity. This reorganization was a significant event in the administrative history of the Île-de-France region. The commune system itself in France has its inception in the year 1789.

### Demographics and Population Data
The population of Bailly has been recorded at various points in time, showing fluctuations within a specific range. Recorded population figures include 3,886, 3,932, 3,975, 3,721, 3,615, 3,733, 3,692, 3,650, 3,690, and 3,731. These figures indicate a relatively stable population size, generally hovering between 3,600 and 4,000 residents. The data reflects the demographic trends of a suburban commune within the greater Paris area.

### Digital Presence and Documentation
Bailly maintains an official online presence through its municipal website, located at https://www.mairie-bailly.fr/. This platform serves as a primary source of information for residents and visitors. The commune is also well-documented in the global knowledge base, with a Wikipedia article titled "Bailly, Yvelines." The entity has a sitelink count of 42, meaning it is linked to in 42 different language versions of Wikipedia. The Wikidata description for the entity is "commune in Yvelines, France."

### Relationship to France and Broader Context
As a commune in France, Bailly is part of a country that is primarily located in Western Europe but extends to other continents through overseas territories. France operates as a semi-presidential republic with its capital in Paris. The country's official language is French, and its currency is the Euro. Bailly's existence is governed by the laws and administrative structures of the French Republic, including the Fifth Republic established in 1958. The commune is subject to the national standards for infrastructure, such as driving on the right and using the metric system.

## References

1. [Source](https://www.data.gouv.fr/fr/datasets/5c34c4d1634f4173183a64f1/)
2. French National Directory of Representatives
3. BnF authorities
4. dataset of postal codes in France. 2018
5. INSEE code
6. répertoire géographique des communes
7. Freebase Data Dumps. 2013
8. Annuaire de service-public.fr
9. Recensement de la population 2015. National Institute of Statistics and Economic Studies. 2017
10. Populations légales 2016
11. Populations légales 2017
12. Populations légales 2018
13. Populations légales 2019
14. Populations légales 2020
15. Populations légales 2021
16. Populations de référence 2022
17. Populations de référence 2023
18. [Code officiel géographique](https://www.insee.fr/fr/information/3363419)
19. National Institute of Statistics and Economic Studies
20. GeoNames
21. [répertoire géographique des communes. 2015](https://wxs-telechargement.ign.fr/83edtfdyqte031y0ra49d2e3/telechargement/inspire/RGC-2015-01$RGC2015/file/RGC2015.7z)
22. [2016](https://data.geopf.fr/telechargement/download/GEOFLA/GEOFLA_2-2_COMMUNE_SHP_LAMB93_FXX_2016-06-28/GEOFLA_2-2_COMMUNE_SHP_LAMB93_FXX_2016-06-28.7z)
23. [Code officiel géographique. 2017](https://www.insee.fr/fr/information/2560698)
24. National Library of Israel Names and Subjects Authority File