# List of public sector organisations in the Haute-Savoie department

Tamtam tracks 47 public sector organisations headquartered in the Haute-Savoie department. This list ranks the 30 largest by number of employees on LinkedIn, led by CH Annecy Genevois, Haute-Savoie General Council and Centre Hospitalier Alpes Léman. Their median headcount is 131. Half of them were founded in 1998 or later. The most common headquarters are Annecy (8), Annemasse (3) and Thonon-les-Bains (3).

These public sector organizations in Haute-Savoie are primarily involved in healthcare and government administration. They are predominantly large institutions, reflecting the structure of public services. Notable entities include CH Annecy Genevois, a hospital providing comprehensive care, and the Haute-Savoie General Council, managing social services and regional development. Centre Hospitalier Alpes Léman offers a wide range of medical services, while Agglomération du Grand Annecy coordinates initiatives across 34 communes.

A significant pattern observed is the concentration of headquarters in Annecy, which hosts the Haute-Savoie General Council, Agglomération du Grand Annecy, and CPAM de Haute-Savoie. This indicates Annecy's role as a central hub for public administration and services within the department. The list also features a strong presence of hospital groups, such as Hôpitaux du Léman and Hôpitaux du Pays du Mont-Blanc, highlighting the region's focus on healthcare provision.

🇫🇷 Haute-Savoie · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [CH Annecy Genevois](https://www.tamtam.ai/c/ch-annecy-genevois) (ch-annecygenevois.fr)<br>A leading hospital in Haute-Savoie resulting from the merger of Annecy and St Julien-en-Genevois hospitals, with over 4600 dedicated staff providing top-notch care | Hospitals and Health Care | 🇫🇷 Épagny Metz-Tessy | 810 |  |
| 2 | [Haute-Savoie General Council](https://www.tamtam.ai/c/haute-savoie-general-council) (hautesavoie.fr)<br>Management of social services, education, transportation, economic development, environmental protection, culture, and sports to support regional growth and community well-being. | Government Administration | 🇫🇷 Annecy | 711 |  |
| 3 | [Centre Hospitalier Alpes Léman](https://www.tamtam.ai/c/centre-hospitalier-alpes-leman) (ch-alpes-leman.fr)<br>A hospital center providing comprehensive care, promoting public hospital values, offering improved patient conditions, ensuring diverse healthcare options, and prioritizing environmental sustainability | Hospitals and Health Care | 🇫🇷 Contamine-sur-Arve | 651 |  |
| 4 | [CENTRE HOSPITALIER ANNECY GENEVOIS](https://www.tamtam.ai/c/centre-hospitalier-annecy-genevois)<br>Hospital offering comprehensive medical services including patient care, diagnostics, treatment, and healthcare support in the Auvergne-Rhône-Alpes region. | Medical Practices | 🇫🇷 Épagny-Metz-Tessy | 649 |  |
| 5 | [Hôpitaux du Léman](https://www.tamtam.ai/c/hopitaux-du-leman) (hopitauxduleman.fr)<br>Provides comprehensive health care services for 130,000 Chablais residents, including hospitalizations, emergency care, medical consultations, and elderly care. | Hospitals and Health Care | 🇫🇷 Thonon-les-Bains | 526 | 1998 |
| 6 | [Établissement Public de Santé Mentale 74](https://www.tamtam.ai/c/etablissement-public-de-sante-mentale-74) (ch-epsm74.org)<br>Provides comprehensive mental health services, including inpatient care, outpatient centers, specialized units for adults and children across several locations. | Hospitals and Health Care | 🇫🇷 La Roche-sur-Foron | 404 | 1975 |
| 7 | [Agglomération du Grand Annecy](https://www.tamtam.ai/c/agglomeration-du-grand-annecy) (grandannecy.fr)<br>Coordination of economic, ecological, mobility, housing, and social initiatives across 34 communes to enhance residents' quality of life. | Government Administration | 🇫🇷 Annecy | 375 | 2017 |
| 8 | [Service Départemental d'Incendie et de Secours de la Haute-Savoie](https://www.tamtam.ai/c/service-departemental-d-incendie-et-de-secours-de-la-haute-savoie) (sdis74.fr)<br>The company is a public firefighting department in Haute-Savoie, France, consisting of professional and volunteer firefighters, as well as administrative and technical staff They respond to various natural, industrial, technological, and everyday risks in the region | Government Administration | 🇫🇷 Annecy | 314 |  |
| 9 | [Hôpitaux du Pays du Mont-Blanc](https://www.tamtam.ai/c/hopitaux-du-pays-du-mont-blanc) (hpmb.fr)<br>Provides comprehensive healthcare services across four sites, including hospitals and nursing homes, with over 1,130 professionals, advanced technical facilities, and medical imaging. | Hospitals and Health Care | 🇫🇷 Sallanches | 306 |  |
| 10 | [Annemasse Agglo](https://www.tamtam.ai/c/annemasse-agglo) (annemasse-agglo.fr)<br>Management of environment, economy, housing, transport, culture, and social services to improve quality of life in a transborder urban area. | Government Administration | 🇫🇷 Annemasse | 290 | 2007 |
| 11 | [CPAM de Haute-Savoie](https://www.tamtam.ai/c/cpam-de-haute-savoie) (ameli.fr)<br>A social security organization in Haute-Savoie, part of a national network, working to protect the health of over 60 million insured individuals through various healthcare projects | Government Administration | 🇫🇷 Annecy | 227 |  |
| 12 | [Haute-Savoie HABITAT](https://www.tamtam.ai/c/haute-savoie-habitat) (hautesavoiehabitat.fr)<br>Support local municipalities in housing projects, develop new social housing, manage and maintain existing rental housing stock in Haute-Savoie. | Real Estate | 🇫🇷 Annecy | 209 | 1929 |
| 13 | [ATMB - Autoroutes et Tunnel du Mont Blanc](https://www.tamtam.ai/c/atmb-autoroutes-et-tunnel-du-mont-blanc) (atmb.com)<br>Management and operation of mountain highways and the Mont Blanc Tunnel, ensuring safety, mobility, and sustainable transport in the Alps. | Truck Transportation | 🇫🇷 Bonneville | 206 | 1957 |
| 14 | [Thonon Agglomération](https://www.tamtam.ai/c/thonon-agglomeration) (thononagglo.fr)<br>Coordination of 25 communes in Haute-Savoie focusing on sustainable territorial planning, community services, and regional development with over 300 staff. | Government Administration | 🇫🇷 Thonon-les-Bains | 142 | 2017 |
| 15 | [CCI Haute-Savoie](https://www.tamtam.ai/c/cci-haute-savoie) (app.utm.io)<br>Support for 38,600 local businesses and communities through training, development services, and economic growth facilitation across multiple sectors. | Government Administration | 🇫🇷 Annecy | 131 |  |
| 16 | [Syane](https://www.tamtam.ai/c/syane) (syane.fr)<br>Public energy and digital services provider supporting local authorities with electricity, gas, renewable energy, lighting, mobility, and digital infrastructure projects. | Government Administration | 🇫🇷 Poisy | 128 | 1950 |
| 17 | [Mairie de Megève](https://www.tamtam.ai/c/mairie-de-megeve) (mairie.megeve.fr)<br>Mountain resort specializing in winter sports, tourism, and alpine activities, offering extensive ski areas and high-quality accommodations. | Government Administration | 🇫🇷 Megève | 126 |  |
| 18 | [Mairie de Chamonix-Mont-Blanc](https://www.tamtam.ai/c/mairie-de-chamonix-mont-blanc) (chamonix.fr)<br>Local government providing administrative services and community support in Chamonix-Mont-Blanc, a renowned Alpine mountain commune. | Government Administration | 🇫🇷 Chamonix-Mont-Blanc | 109 |  |
| 19 | [Ville de Saint-Julien-en-Genevois](https://www.tamtam.ai/c/ville-de-saint-julien-en-genevois) (st-julien-en-genevois.fr)<br>The company is a local government entity in Saint-Julien-en-Genevois, focusing on providing services, facilities, and infrastructure improvements for the community's development and well-being | Government Administration | 🇫🇷 Saint-Julien-en-Genevois | 86 |  |
| 20 | [Mairie de Ville-la-Grand](https://www.tamtam.ai/c/mairie-de-ville-la-grand) (ville-la-grand.fr)<br>Urban municipality in Haute-Savoie, France, with a population of 8700 Part of Annemasse Agglomération, offering a preserved living environment and a strong economy | Government Administration | 🇫🇷 Ville-la-Grand | 84 |  |
| 21 | [Polytech Annecy-Chambéry](https://www.tamtam.ai/c/polytech-annecy-chambery) (univ-smb.fr)<br>Engineering school at the University Savoie Mont Blanc, providing education and training in various engineering disciplines to students in France | Higher Education | 🇫🇷 Annecy | 83 | 2006 |
| 22 | [Communauté de Communes du Genevois](https://www.tamtam.ai/c/communaute-de-communes-du-genevois) (cc-genevois.fr)<br>The company manages a community in Haute-Savoie, France, focusing on sustainable development and addressing the needs of a growing population near Geneva, Switzerland | Government Administration | 🇫🇷 Archamps | 82 |  |
| 23 | [Greta Savoie Haute-Savoie](https://www.tamtam.ai/c/greta-savoie-haute-savoie) (gretaformation.fr)<br>Prepare for the future with GRETA Savoie Haute-Savoie! Offering training and education services to help individuals advance their skills | Technical and Vocational Training | 🇫🇷 Annemasse | 81 | 2024 |
| 24 | [SILA (Syndicat Mixte du Lac d'Annecy)](https://www.tamtam.ai/c/sila-syndicat-mixte-du-lac-d-annecy) (sila.fr)<br>Established in 1957 to protect Lake Annecy, the company specializes in wastewater treatment, waste management, environmental preservation, and water cycle management | Government Administration | 🇫🇷 Annecy | 75 | 1957 |
| 25 | [Communauté de communes pays d'Évian - vallée d'Abondance](https://www.tamtam.ai/c/communaute-de-communes-pays-d-evian-vallee-d-abondance) (cc-peva.fr)<br>Management of a diverse Alpine region with rich cultural heritage, seasonal activities, and international tourism appeal across 22 communes. | Government Administration | 🇫🇷 Publier | 74 | 2017 |
| 26 | [GRETA LAC](https://www.tamtam.ai/c/greta-lac) (greta-lac.fr)<br>A group of public educational institutions pooling resources to provide adult training tailored to local employment needs in southeastern France | Professional Training and Coaching | 🇫🇷 Annemasse | 73 | 1974 |
| 27 | [Ville de Rumilly](https://www.tamtam.ai/c/ville-de-rumilly) (mairie-rumilly74.fr)<br>The company is located in Rumilly, a dynamic city with a strong industrial presence and a variety of leisure activities They offer a wide range of public services to the population | Government Relations Services | 🇫🇷 Rumilly | 63 |  |
| 28 | [École Hôtelière Savoie Léman](https://www.tamtam.ai/c/ecole-hoteliere-savoie-leman) (lhsl.fr)<br>A vocational high school specializing in hospitality and restaurant management education, offering programs from CAP to professional licenses | Higher Education | 🇫🇷 Thonon-les-Bains | 61 | 1912 |
| 29 | [SATELC](https://www.tamtam.ai/c/satelc)<br>A company specializing in tourist development and operations in the La Clusaz area | Spectator Sports | 🇫🇷 La Clusaz | 61 | 1944 |
| 30 | [Communauté de Communes Faucigny Glières](https://www.tamtam.ai/c/communaute-de-communes-faucigny-glieres) (ccfg.fr)<br>Management of local public services including children’s programs, cultural and sports facilities, urban planning, housing, and infrastructure maintenance. | Government Administration | 🇫🇷 Bonneville | 60 | 2006 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in the Haute-Savoie department

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- [Automotive manufacturers and suppliers in the Haute-Savoie department](https://www.tamtam.ai/l/automotive-companies-haute-savoie) (36)
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- [Accounting firms in the Haute-Savoie department](https://www.tamtam.ai/l/accounting-firms-haute-savoie) (30)
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- [Retail companies in the Haute-Savoie department](https://www.tamtam.ai/l/retail-companies-haute-savoie) (28)
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- [Accounting companies in the Haute-Savoie department](https://www.tamtam.ai/l/accounting-companies-haute-savoie) (27)

## The same list elsewhere in France

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## The same list elsewhere

- [Public sector organisations in the world](https://www.tamtam.ai/l/public-sector-organisations-in-the-world) (18,493)
- [Public sector organisations in Europe](https://www.tamtam.ai/l/public-sector-organisations-in-europe) (8,568)

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Source: https://www.tamtam.ai/l/public-sector-organisations-haute-savoie