Loire-Atlantique (Department, France): Intermunicipal Authorities

Last modified: 2025-04-12 by olivier touzeau
Keywords: loire-atlantique |
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• France
• Loire-Atlantique (Department, France)
• France: Intermunicipal Authorities

Nantes Métropole

Flag of Nantes Métropole - Image by Olivier Touzeau, 11 January 2019

Nantes Métropole (638,931 inhabitants in 2016; 52,336 ha) was created in January 2015, replacing the previous Communauté urbaine Nantes Métropole.
The Syndicat intercommunal à vocations multiples de l'agglomération nantaise (SIMAN), created in 1982, became a district (a former type of intermunicipal structure) in 1992, as District de l'agglomération nantaise). The Communauté urbaine de Nantes was founded in 2001; it was renamed to Nantes Métropole as soon as 2004 but kept the status of Communauté urbaine until 2015.
Nantes Métropole is composed of 24 municipalities: Nantes, Basse-Goulaine, Bouaye, Bouguenais, Brains, Carquefou, La Chapelle-sur-Erdre, Couëron, Indre, Mauves-sur-Loire, La Montagne, Orvault, Le Pellerin, Rezé, Saint-Aignan-Grandlieu, Saint-Herblain, Saint-Jean-de-Boiseau, Saint-Léger-les-Vignes, Saint-Sébastien-sur-Loire, Sainte-Luce-sur-Loire, Sautron, Les Sorinières, Thouaré-sur-Loire, and Vertou.

The flag of Nantes Métropole is white with the authority's logo (photo, photo).

Communautés d'agglomération

Clisson Sèvre et Maine Agglomération

Flag of Clisson Sèvre et Maine Agglomération - Image by Olivier Touzeau, 24 January 2025

Clisson Sèvre et Maine Agglo is the intercommunal structure centred on the town of Clisson in the Loire-Atlantique department. The Communauté d'agglomération was created in 2017 with the merger of the former Communauté de communes of Sèvre, Maine et Goulaine and the former Communauté de communes of Vallée de Clisson. There are 56,813 inhabitants (2021) on 309.6 km² in 16 communes: Aigrefeuille-sur-Maine, Boussay, Château-Thébaud, Clisson, Gétigné, Gorges, La Haie-Fouassière, Haute-Goulaine, Maisdon-sur-Sèvre, Monnières, La Planche, Remouillé, Saint-Fiacre-sur-Maine, Saint-Hilaire-de-Clisson, Saint-Lumine-de-Clisson, Vieillevigne.

The flag is white with the exclamation mark of the logo at the hoist and the full logo in white: photo (2022).

Olivier Touzeau, 24 January 2025

Pornic Agglo Pays de Retz

Flag of Pornic Agglo Pays de Retz - Image by Olivier Touzeau, 9 May 2021

Pornic Agglo Pays de Retz (62,330 inhabitants in 2017; 52,214 ha; 15 municipalities) was created in January 2017 as the merger of the former Communauté de communes de Pornic (created in 2002, composed of Pornic, Chaumes-en-Retz, La Bernerie-en-Retz, Chauvé, Les Moutiers-en-Retz, La Plaine-sur-Mer, Préfailles, and Saint-Michel-Chef-Chef) and Communauté de communes Cœur Pays de Retz (created in 1995; composed of Sainte-Pazanne, Cheix-en-Retz, Port-Saint-Père, Rouans, Saint-Hilaire-de-Chaléons, and Vue)).

The flag of Pornic Agglo Pays de Retz (photo) is white flag with the authority's logo.

Olivier Touzeau, 9 May 2021

Cap Atlantique

Flag of Cap Atlantique - Image by Olivier Touzeau, 29 May 2017

The Communauté d'agglomération de la presqu'île de Guérande - Atlantique (Cap Atlantique; 72,917 inhabitants in 2014, 38,612 ha) is made of 12 municipalities located in Loire-Atlantique (Assérac, Batz-sur-Mer, Guérande, Herbignac, La Baule-Escoublac (seat), La Turballe, Le Croisic, Le Pouliguen, Mesquer, Piriac-sur-Mer, Saint-Lyphard, Saint-Molf) and another three located in Morbihan (Camoêl, Férel, Pénestin).

The flag of Cap Atlantique (video) is vertically divided blue-white (~3:5), with the circular logo in the middle.
The logo represents a geographical map of the Guérande Peninsula (presqu'île), limited west by the Atlantic Ocean, north by river Vilaine, and south by the wide estuary of river Loire.
The motto "L'Énergie pour bâtir ensemble" reads "Energy to build together".

Olivier Touzeau & Ivan Sache, 5 June 2017

Communautés de communes

Erdre et Gesvres

Flag of the Communauté de communes d'Erdre et Gesvres - Image by Olivier Touzeau, 14 February 2019

The Communauté de communes d'Erdre et Gesvres (62,179 inhabitants in 2017; 50, 936 ha) is composed of the municipalities of Casson, Fay-de-Bretagne, Grandchamps-des-Fontaines, Héric, Les Touches, Nort-sur-Erdre, Notre-Dame-des-Landes, Petit-Mars, Saint-Mars-du-Désert, Sucé-sur-Erdre, Treillières, and Vigneux-de-Bretagne.
The flag of the Communauté de communes d'Erdre et Gesvres (photo, photo, photo) is white with the authority's logo.

Olivier Touzeau, 14 February 2019

Grand Lieu

Flag of the Communauté de communes de Grand Lieu - Image by Olivier Touzeau, 14 February 2019

The Communauté de communes de Grand Lieu (37,728 inhabitants in 2014; 29,757 ha), established in 1993, is composed of the municipalities of La Chevrolière (seat), Le Bignon, Geneston, La Limouzinière, Montbert, Pont-Saint-Martin, Saint-Colomban, Saint-Lumine-de-Coutais, and Saint-Philbert-de-Grand-Lieu.
The flag of the Communauté de communes de Grand Lieu (photo) is white with the authority's logo.

Olivier Touzeau, 14 February 2019

Pays d'Ancenis

Flag of Pays d'Ancenis, current and former versions - Images by Olivier Touzeau, 9 May 2021

The Communauté de communes du Pays d'Ancenis (COMPA) (66,984 inhabitants in 2017; 86,332 ha) is composed of 19 municipalities in Loire-Atlantique (Ancenis-Saint-Géréon - created in 2019 as the merger of Ancenis and Saint-Géréon -, Le Cellier, Couffé, Joué-sur-Erdre, Ligné, Loireauxence - created in 2016 as the merger of Belligné, La Chapelle-Saint-Sauveur, La Rouxière and Varades -, Mésanger, Montrelais, Mouzeil, Oudon, Pannecé, Le Pin, Pouillé-les-Côteaux, Riaillé, La Roche-Blanche, Teillé, Trans-sur-Erdre, Vair-sur-Loire, Vallons-de-l'Erdre - created in 2018 as the merger of Bonnœuvre, Maumusson, Saint-Mars-la-Jaille, Saint-Sulpice-des-Landes, Vritz, in Loire-Atlantique, and Freigné in Maine-et-Loire -, and another one in Maine-et-Loire (Ingrandes-Le Fresne sur Loire, established on 1 January 2016 as the merger of Ingrandes in Maine-et-Loire and Le Fresne-sur-Loire in Loire-Atlantique).

The flag of COMPA is white with the authority's logo, which was changed in 2011 (photo). The former flag (photo) was white with the former logo.

Olivier Touzeau, 9 May 2021

Sud Estuaire

Flag of Sud Estuaire - Image by Olivier Touzeau, 28 February 2021

The Communauté de communes Sud Estuaire (29,864 inhabitants in 2017; 19,748 ha), established in 1996, is composed of the municipalities of Corsept, Frossay, Paimbœuf, Saint-Brevin-les-Pins, Saint-Père-en-Retz, and Saint-Viaud.
The flag of Sud Estuaire (photo) is white with the authority's logo.

Olivier Touzeau, 28 February 2021