# Tréguier

> French commune in the Côtes-d'Armor, Brittany

**Wikidata**: [Q235297](https://www.wikidata.org/wiki/Q235297)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Tréguier)  
**Source**: https://4ort.xyz/entity/tr-guier

## Summary
Tréguier is a historic commune in the Côtes-d'Armor department of Brittany, France. Known for its medieval architecture and cultural heritage, it serves as a key administrative and historical center in the Trégor region.

## Key Facts
- **Location**: Tréguier is situated in the Côtes-d'Armor department (inception: 1790-03-04) within the Brittany region of France.
- **Administrative Division**: It is part of the arrondissement of Lannion and the canton of Tréguier (inception: 2015-03-22).
- **Historical Context**: Tréguier lies within the historic province of Trégor (inception: 865 AD), a significant cultural and linguistic area in Brittany.
- **Population**: Recent estimates place the population at approximately 2,489 residents, with historical figures ranging from 2,294 to 3,257.
- **Coordinates**: Located at latitude 48.785° N and longitude -3.2325° W.
- **Aliases**: Also known by historical names such as Landreger and Lantriguet.
- **Website**: Official municipal site at [http://www.ville-treguier.fr](http://www.ville-treguier.fr).
- **Wikidata Description**: Classified as a "French commune in the Côtes-d'Armor, Brittany."

## FAQs
**Where is Tréguier located?**
Tréguier is a commune in the Côtes-d'Armor department of Brittany, France. It is part of the arrondissement of Lannion and the canton of Tréguier, situated in the historic Trégor province.

**What is the population of Tréguier?**
The population of Tréguier has fluctuated over time, with recent estimates around 2,489 residents. Historical data shows peaks of up to 3,257 inhabitants.

**What is the historical significance of Tréguier?**
Tréguier is located in the Trégor region, a historic province of Brittany with roots dating back to 865 AD. The commune is known for its medieval heritage and cultural importance in the region.

**What administrative divisions is Tréguier part of?**
Tréguier is part of the Côtes-d'Armor department (created in 1790) and the arrondissement of Lannion. It also belongs to the canton of Tréguier, established in 2015.

## Why It Matters
Tréguier matters as a cultural and historical hub in Brittany, reflecting the region's medieval past and linguistic heritage. As part of the Trégor province, it contributes to the preservation of Breton identity and serves as an administrative center within the Côtes-d'Armor department. Its architectural and historical significance makes it a point of interest for both locals and visitors.

## Notable For
- **Medieval Architecture**: Home to well-preserved medieval buildings, including the Cathedral of Saint-Tugdual.
- **Cultural Heritage**: A key site in the Trégor region, known for its Breton linguistic and cultural traditions.
- **Administrative Role**: Serves as a central commune within the arrondissement of Lannion and the canton of Tréguier.
- **Historical Province**: Located in Trégor, one of Brittany’s oldest and most culturally distinct regions.
- **Population Dynamics**: Exhibits notable demographic trends, with historical population fluctuations reflecting broader regional changes.

## Body

### Geography and Location
Tréguier is situated in the Côtes-d'Armor department of Brittany, France. Its coordinates are 48.785° N latitude and -3.2325° W longitude. The commune is part of the arrondissement of Lannion and the canton of Tréguier, which was established in 2015. The region is characterized by its coastal proximity and historic ties to the Trégor province.

### Historical Context
Tréguier is located within the historic province of Trégor, which dates back to 865 AD. This region is known for its distinct Breton cultural and linguistic heritage. The commune itself has a rich medieval history, evident in its architecture and urban layout. The Cathedral of Saint-Tugdual, a prominent landmark, underscores its religious and historical significance.

### Administrative Structure
Tréguier is governed as a commune, a basic administrative division in France. It falls under the jurisdiction of the Côtes-d'Armor department, created in 1790, and the arrondissement of Lannion. The canton of Tréguier, established in 2015, groups several communes for electoral and administrative purposes.

### Demographics
The population of Tréguier has varied over time, with recent estimates placing it at approximately 2,489 residents. Historical data shows peaks of up to 3,257 inhabitants, reflecting demographic shifts in the region. The commune’s population dynamics are influenced by its role as a cultural and administrative center in Brittany.

### Cultural and Architectural Significance
Tréguier is notable for its medieval architecture, particularly the Cathedral of Saint-Tugdual, which dates back to the 14th century. The commune’s cultural heritage is deeply tied to the Breton language and traditions of the Trégor region. This cultural richness makes Tréguier a significant site for both historical preservation and tourism.

### Related Entities
- **Côtes-d'Armor**: The department in which Tréguier is located, established in 1790.
- **Arrondissement of Lannion**: The administrative division overseeing Tréguier.
- **Canton of Tréguier**: The electoral and administrative grouping established in 2015.
- **Trégor**: The historic province of Brittany, known for its cultural and linguistic distinctiveness.

### Additional Details
Tréguier is also known by its historical aliases, Landreger and Lantriguet. The commune’s official website, [http://www.ville-treguier.fr](http://www.ville-treguier.fr), provides further information on its governance, history, and cultural events. The Wikidata description classifies Tréguier as a "French commune in the Côtes-d'Armor, Brittany," highlighting its administrative and regional significance.

## References

1. Virtual International Authority File
2. BnF authorities
3. dataset of postal codes in France. 2018
4. INSEE code
5. répertoire géographique des communes
6. Freebase Data Dumps. 2013
7. Annuaire de service-public.fr
8. MusicBrainz
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 communales depuis 1968. National Institute of Statistics and Economic Studies](https://www.insee.fr/fr/statistiques/2522602)
14. Populations légales 2019
15. Populations légales 2020
16. Populations légales 2021
17. Populations de référence 2022
18. Populations de référence 2023
19. [Code officiel géographique. 2017](https://www.insee.fr/fr/information/2560698)
20. [Code officiel géographique](https://www.insee.fr/fr/information/3363419)
21. National Institute of Statistics and Economic Studies
22. GeoNames
23. [répertoire géographique des communes. 2015](https://wxs-telechargement.ign.fr/83edtfdyqte031y0ra49d2e3/telechargement/inspire/RGC-2015-01$RGC2015/file/RGC2015.7z)
24. [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)
25. National Library of Israel Names and Subjects Authority File