# 30 leading public sector organisations in the Loire department

Tamtam tracks 39 public sector organisations headquartered in the Loire department. This list ranks the 30 largest by number of employees on LinkedIn, led by CHU de Saint-Etienne, Université Jean Monnet Saint-Etienne and École des Mines de Saint-Étienne. Their median headcount is 122. Half of them were founded in 1963 or later. The most common headquarters are Saint-Étienne (19) and Roanne (5).

The public sector organizations in the Loire department are predominantly large institutions, primarily in healthcare, higher education, and government administration. Notable examples include CHU de Saint-Etienne, a major healthcare provider; Université Jean Monnet Saint-Etienne, offering multidisciplinary education; École des Mines de Saint-Étienne, an engineering school focused on sustainable innovation; and Département de la Loire, which manages social integration and infrastructure. The majority of these organizations are headquartered in Saint-Étienne, with a significant presence also in Roanne.

A common pattern observed is the prevalence of long-established institutions, with many founded in the mid-20th century or earlier, such as Département de la Loire (1793) and École des Mines de Saint-Étienne (1816), indicating a deep-rooted public service infrastructure in the region. These entities collectively manage essential services for the local population.

🇫🇷 Loire · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [CHU de Saint-Etienne](https://www.tamtam.ai/c/chu-de-saint-etienne) (chu-st-etienne.fr)<br>A leading healthcare institution in Auvergne-Rhône-Alpes region of France, offering specialized medical services and innovative care approaches | Hospitals and Health Care | 🇫🇷 Saint-Étienne | 2,420 | 1972 |
| 2 | [Université Jean Monnet Saint-Etienne](https://www.tamtam.ai/c/universite-jean-monnet-saint-etienne) (univ-st-etienne.fr)<br>Provides multidisciplinary education and advanced research across sciences, humanities, law, economics, arts, and languages with strong regional and international partnerships. | Higher Education | 🇫🇷 Saint-Étienne | 1,376 | 1969 |
| 3 | [École des Mines de Saint-Étienne](https://www.tamtam.ai/c/ecole-des-mines-de-saint-etienne) (mines-stetienne.fr)<br>Engineering school focused on sustainable innovation, academic excellence, cutting-edge research, and addressing industrial, digital, and environmental challenges. | Higher Education | 🇫🇷 Saint-Étienne | 761 | 1816 |
| 4 | [Département de la Loire](https://www.tamtam.ai/c/departement-de-la-loire) (loire.fr)<br>This organization focuses on autonomy, social integration, and protecting vulnerable individuals and families They manage infrastructure, support local life, and employ over 3,000 staff members | Government Administration | 🇫🇷 Saint-Étienne | 728 | 1793 |
| 5 | [Saint-Étienne Métropole](https://www.tamtam.ai/c/saint-etienne-metropole) (saint-etienne-metropole.fr)<br>A public intermunicipal cooperation entity in France, Saint-Étienne Métropole manages services for 53 communes with over 400,000 residents, including waste management and transportation | Government Administration | 🇫🇷 Saint-Étienne | 664 |  |
| 6 | [Centre hospitalier de Roanne](https://www.tamtam.ai/c/centre-hospitalier-de-roanne) (ch-roanne.fr)<br>Regional hospital serving 160,000 people with specialized units in surgery, pediatrics, cardiology, geriatrics, psychiatry, and advanced medical technology. | Hospitals and Health Care | 🇫🇷 Roanne | 418 |  |
| 7 | [SDIS 42 - Sapeurs-pompiers de la Loire](https://www.tamtam.ai/c/sdis-42-sapeurs-pompiers-de-la-loire) (linktr.ee)<br>The organization manages firefighters in the Loire department, with headquarters in Saint-Étienne It has 2,800 firefighters, primarily volunteers, and 97 administrative and technical staff | Public Safety | 🇫🇷 Saint-Étienne | 284 | 1999 |
| 8 | [Roanne, ville et agglomération](https://www.tamtam.ai/c/roanne-ville-et-agglomeration) (aggloroanne.fr)<br>Local government entity managing Roanne city and Roannais Agglomeration, serving over 100,000 residents across 40 communes in Loire region. | Government Administration | 🇫🇷 Roanne | 264 |  |
| 9 | [IUT de Saint Etienne (Compte certifié)](https://www.tamtam.ai/c/iut-de-saint-etienne-compte-certifie) (iut.univ-st-etienne.fr)<br>A component of University Jean Monnet, the IUT in Saint-Étienne offers training programs, professional licenses, continuing education for businesses, and international technological studies | Higher Education | 🇫🇷 Saint-Étienne | 252 | 1967 |
| 10 | [École Nationale Supérieure de Sécurité Sociale (EN3S)](https://www.tamtam.ai/c/ecole-nationale-superieure-de-securite-sociale-en3s) (en3s.fr)<br>Specialized in social security, this institution ensures the training and mobility of senior executives, while providing knowledge to transform social protection globally | Higher Education | 🇫🇷 Saint-Étienne | 244 | 1960 |
| 11 | [Hôpital du Gier](https://www.tamtam.ai/c/hopital-du-gier-saint-chamond) (hopitaldugier.fr)<br>A public health facility located in the Gier Valley, positioned between Saint-Etienne and Lyon for easy accessibility across the territory | Hospitals and Health Care | 🇫🇷 Saint-Chamond | 233 |  |
| 12 | [Cpam de la Loire (Assurance Maladie)](https://www.tamtam.ai/c/cpam-de-la-loire-assurance-maladie) (ameli.fr)<br>Working at an organization committed to protecting the health of over 60 million insured individuals by providing quality healthcare services and support | Government Administration | 🇫🇷 Saint-Étienne | 223 |  |
| 13 | [Centre Hospitalier du Forez](https://www.tamtam.ai/c/centre-hospitalier-du-forez) (ch-forez.fr)<br>Public healthcare institution providing medical services and care to the community as a government-run hospital facility. | Medical Practices | 🇫🇷 Montbrison | 222 |  |
| 14 | [lUT de Roanne](https://www.tamtam.ai/c/lut-de-roanne) (iut-roanne.univ-st-etienne.fr)<br>The company provides support to students for academic success and professional integration, and also contributes to the development of the local community | Higher Education | 🇫🇷 Roanne | 191 | 1992 |
| 15 | [SIEL-Territoire d'énergie Loire](https://www.tamtam.ai/c/siel-territoire-d-energie-loire) (te42.fr)<br>Public syndicate uniting Loire communes and department, managing energy and digital services for local communities and intercommunalities. | Government Administration | 🇫🇷 Saint-Priest-en-Jarez | 122 | 1950 |
| 16 | [Caf de la Loire](https://www.tamtam.ai/c/caf-de-la-loire) (caf.fr)<br>A major player in family policy, providing support and financial aid to families, children, and vulnerable individuals in the Loire region | Government Administration | 🇫🇷 Saint-Étienne | 116 | 1946 |
| 17 | [DEUX FLEUVES LOIRE HABITAT](https://www.tamtam.ai/c/deux-fleuves-loire-habitat) (loirehabitat.fr)<br>Management of nearly 12,000 social housing units and specific reception structures across Loire, providing quality, affordable living with strong local support. | Real Estate | 🇫🇷 Saint-Étienne | 116 | 1914 |
| 18 | [EPORA](https://www.tamtam.ai/c/epora) (epora.fr)<br>Support local authorities with land strategies, promote sustainable development, recycle land, preserve agriculture, and limit urban sprawl in Auvergne-Rhône-Alpes. | Real Estate | 🇫🇷 Saint-Étienne | 96 | 1998 |
| 19 | [Préfecture de la Loire](https://www.tamtam.ai/c/prefecture-de-la-loire) (loire.gouv.fr)<br>This company describes the state's actions in the Loire department, focusing on policies such as territorial development, economic growth, social cohesion, and public service innovation | Government Administration | 🇫🇷 Saint-Étienne | 83 |  |
| 20 | [Telecom Saint-Etienne](https://www.tamtam.ai/c/telecom-saint-etienne-236638) (telecom-st-etienne.fr)<br>Engineering school offering master and doctoral programs in telecommunications, affiliated with Jean Monnet University and Institut Telecom. | Higher Education | 🇫🇷 Saint-Étienne | 80 |  |
| 21 | [ROANNAISE DE LEAU](https://www.tamtam.ai/c/roannaise-de-leau) (roannaise-de-leau.fr)<br>The company is a key player in public water policy, overseeing water management in 80 municipalities between the Loire and Rhône rivers | Utilities | 🇫🇷 Roanne | 80 | 2005 |
| 22 | [Lycée Claude Fauriel](https://www.tamtam.ai/c/lycee-claude-fauriel) (fauriel.org)<br>A public high school in Saint-Étienne, offering traditional high school classes, preparatory classes for prestigious schools, boarding, and dining facilities Dedicated to Charles-Claude Fauriel | Higher Education | 🇫🇷 Saint-Étienne | 76 | 1880 |
| 23 | [Cité du design](https://www.tamtam.ai/c/cite-du-design) (citedudesign.com)<br>A collaborative cultural institution in Saint-Étienne, France, combining a design school and a design center to promote education, research, and economic development in art and design | Public Policy Offices | 🇫🇷 Saint-Étienne | 76 | 2005 |
| 24 | [Faculté de Droit - Université Jean Monnet Saint-Etienne](https://www.tamtam.ai/c/faculte-de-droit-universite-jean-monnet-saint-etienne) (fac-droit.univ-st-etienne.fr)<br>Since 1963, this institution has trained thousands of legal professionals in various fields, emphasizing adaptability to societal changes and research needs | Higher Education | 🇫🇷 Saint-Étienne | 74 | 1963 |
| 25 | [Le Chambon-Feugerolles](https://www.tamtam.ai/c/le-chambon-feugerolles) (lechambon.fr)<br>A city in the Loire region with a population of 12,347, known for its proximity to Saint-Etienne, flourishing businesses, and focus on fashion and education | Government Administration | 🇫🇷 Le Chambon-Feugerolles | 71 |  |
| 26 | [EHPAD MAISON DE RETRAITE DE LA LOIRE](https://www.tamtam.ai/c/ehpad-maison-de-retraite-de-la-loire) (mrl-42.fr)<br>The company provides comprehensive care for elderly and mentally handicapped individuals, offering various services such as full-time residence, day care, and in-home nursing care | Hospitals and Health Care | 🇫🇷 Saint-Just-Saint-Rambert | 69 |  |
| 27 | [LA COMÉDIE DE SAINT-ÉTIENNE](https://www.tamtam.ai/c/la-comedie-de-saint-etienne) (lacomedie.fr)<br>A national theater center with a drama school, led by Benoît Lambert, focusing on shared theater production, cultural immersion, and unique training programs in France | Performing Arts | 🇫🇷 Saint-Étienne | 54 | 1947 |
| 28 | [Faculté des Sciences et Techniques - Université Jean Monnet Saint-Etienne](https://www.tamtam.ai/c/faculte-des-sciences-et-techniques-universite-jean-monnet-saint-etienne) (fac-sciences.univ-st-etienne.fr)<br>The Faculty of Sciences and Techniques in Saint-Étienne offers a wide range of undergraduate and master's programs in various science and technology fields, with a focus on excellence and partnerships | Higher Education | 🇫🇷 Saint-Étienne | 49 | 1970 |
| 29 | [OPHEOR](https://www.tamtam.ai/c/opheor) (opheor.fr)<br>OPHEOR is a key player in Roannais real estate, promoting local public policy, supporting economic activity, and offering a variety of housing options | Real Estate | 🇫🇷 Roanne | 46 | 1955 |
| 30 | [Ville de Saint-Just Saint-Rambert](https://www.tamtam.ai/c/ville-de-saint-just-saint-rambert) (stjust-strambert.fr)<br>The municipality of Saint-Just Saint-Rambert is a vibrant town with a rich historical heritage, nestled by the Loire river, offering various activities and natural charm | Government Administration | 🇫🇷 Saint-Just-Saint-Rambert | 35 |  |

## 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 11, 2026.

## More company lists in the Loire department

- [The largest companies in the Loire department](https://www.tamtam.ai/l/largest-companies-loire) (632)
- [Manufacturers in the Loire department](https://www.tamtam.ai/l/manufacturers-loire) (122)
- [Companies with in-house R&D in the Loire department](https://www.tamtam.ai/l/r-and-d-companies-loire) (101)
- [Hardware manufacturers in the Loire department](https://www.tamtam.ai/l/hardware-companies-loire) (71)
- [Multinational companies in the Loire department](https://www.tamtam.ai/l/multinational-companies-loire) (66)
- [Contract manufacturers in the Loire department](https://www.tamtam.ai/l/contract-manufacturers-loire) (49)
- [Retail chains in the Loire department](https://www.tamtam.ai/l/retail-chains-loire) (49)
- [Family-owned companies in the Loire department](https://www.tamtam.ai/l/family-owned-companies-loire) (43)
- [Industrial Machinery Manufacturing companies in the Loire department](https://www.tamtam.ai/l/industrial-machinery-manufacturing-companies-loire) (39)
- [Distributors and wholesalers in the Loire department](https://www.tamtam.ai/l/distributors-and-wholesalers-loire) (31)
- [Professional services firms in the Loire department](https://www.tamtam.ai/l/professional-services-firms-loire) (29)
- [Aerospace and defence companies in the Loire department](https://www.tamtam.ai/l/aerospace-and-defense-companies-loire) (26)
- [Food and Beverage Manufacturing companies in the Loire department](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-loire) (25)

## The same list elsewhere in France

- [Public sector organisations in France](https://www.tamtam.ai/l/public-sector-organisations-france) (4,006)
- [Public sector organisations in Île-de-France](https://www.tamtam.ai/l/public-sector-organisations-ile-de-france) (993)
- [Public sector organisations in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/public-sector-organisations-auvergne-rhone-alpes) (451)
- [Public sector organisations in Grand Est](https://www.tamtam.ai/l/public-sector-organisations-grand-est) (425)
- [Public sector organisations in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/public-sector-organisations-provence-alpes-cote-dazur) (384)
- [Public sector organisations in Occitanie](https://www.tamtam.ai/l/public-sector-organisations-occitanie) (317)
- [Public sector organisations in Nouvelle-Aquitaine](https://www.tamtam.ai/l/public-sector-organisations-nouvelle-aquitaine) (310)
- [Public sector organisations in Hauts-de-France](https://www.tamtam.ai/l/public-sector-organisations-hauts-de-france) (261)
- [Public sector organisations in Pays de la Loire](https://www.tamtam.ai/l/public-sector-organisations-pays-de-la-loire) (187)
- [Public sector organisations in the Bouches-du-Rhône department](https://www.tamtam.ai/l/public-sector-organisations-bouches-du-rhone) (183)
- [Public sector organisations in Normandy](https://www.tamtam.ai/l/public-sector-organisations-normandy) (166)
- [Public sector organisations in Brittany](https://www.tamtam.ai/l/public-sector-organisations-brittany) (165)
- [Public sector organisations in the Nord department](https://www.tamtam.ai/l/public-sector-organisations-nord) (135)
- [Public sector organisations in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/public-sector-organisations-bourgogne-franche-comte) (130)
- [Public sector organisations in Centre-Val de Loire](https://www.tamtam.ai/l/public-sector-organisations-centre-val-de-loire) (121)
- [Public sector organisations in the Rhône department](https://www.tamtam.ai/l/public-sector-organisations-rhone) (120)
- [Public sector organisations in the Haute-Garonne department](https://www.tamtam.ai/l/public-sector-organisations-haute-garonne) (111)
- [Public sector organisations in the Gironde department](https://www.tamtam.ai/l/public-sector-organisations-gironde) (109)
- [Public sector organisations in the Hauts-de-Seine department](https://www.tamtam.ai/l/public-sector-organisations-hauts-de-seine) (96)
- [Public sector organisations in the Seine-Saint-Denis department](https://www.tamtam.ai/l/public-sector-organisations-seine-saint-denis) (91)
- [Public sector organisations in the Loire-Atlantique department](https://www.tamtam.ai/l/public-sector-organisations-loire-atlantique) (82)
- [Public sector organisations in Paris](https://www.tamtam.ai/l/public-sector-organisations-paris) (460)
- [Public sector organisations in Marseille](https://www.tamtam.ai/l/public-sector-organisations-marseille) (103)
- [Public sector organisations in Toulouse](https://www.tamtam.ai/l/public-sector-organisations-toulouse) (83)

---

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