# Public sector organisations headquartered in the Marne department

Tamtam tracks 25 public sector organisations headquartered in the Marne department. This list ranks all of them by number of employees on LinkedIn, led by Université de Reims Champagne-Ardenne, CHU de Reims and Communauté urbaine du Grand Reims. Their median headcount is 145. Half of them were founded in 1978 or later. The most common headquarters are Reims (12) and Châlons-en-Champagne (7).

These public sector organizations in the Marne department are predominantly large institutions in higher education, healthcare, and government administration. Examples include Université de Reims Champagne-Ardenne, which develops scientific projects and provides training, and CHU de Reims, a hospital center offering healthcare, education, and research. Communauté urbaine du Grand Reims manages an urban and rural territory, and Département de la Marne provides social services and infrastructure management.

The data shows a concentration of these organizations' headquarters in Reims and Châlons-en-Champagne, with a notable presence of healthcare providers like EPSM de la Marne, specializing in psychiatric care, and Centre Hospitalier Léon Bourgeois de Châlons-en-Champagne, a community hospital. Other organizations, such as SDIS 51 - Sapeurs-pompiers de la Marne, provide public safety services.

🇫🇷 Marne · 25 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Université de Reims Champagne-Ardenne](https://www.tamtam.ai/c/universite-de-reims-champagne-ardenne) (univ-reims.fr)<br>Develops scientific projects in agri-sciences, health, digital sciences, and humanities. Provides diverse training programs, focusing on future socio-economic needs, student excellence. | Higher Education | 🇫🇷 Reims | 2,487 |  |
| 2 | [CHU de Reims](https://www.tamtam.ai/c/chu-de-reims) (chu-reims.fr)<br>A leading hospital center in Reims offering high-quality healthcare, education, and research services in various medical specialties, with a focus on collaboration and innovation | Hospitals and Health Care | 🇫🇷 Reims | 1,412 |  |
| 3 | [Communauté urbaine du Grand Reims](https://www.tamtam.ai/c/communaute-urbaine-du-grand-reims) (grandreims.fr)<br>Managing a large urban and rural territory with 300,000 inhabitants across 143 communes, balancing diverse community needs and development. | Government Administration | 🇫🇷 Reims | 527 |  |
| 4 | [Département de la Marne](https://www.tamtam.ai/c/departement-de-la-marne) (marne.fr)<br>Provides social services and infrastructure management including family support, elderly care, disability assistance, education, culture, sports, and tourism. | Government Relations Services | 🇫🇷 Châlons-en-Champagne | 347 |  |
| 5 | [EPSM de la Marne](https://www.tamtam.ai/c/epsm-de-la-marne) (epsm-marne.fr)<br>Specialized psychiatric care for adults, children, elderly, addiction, medico-legal cases, and regional mental health support in Marne. | Hospitals and Health Care | 🇫🇷 Châlons-en-Champagne | 313 | 1834 |
| 6 | [IUT de Reims-Châlons-Charleville](https://www.tamtam.ai/c/iut-de-reims-chalons-charleville) (iut-rcc.fr)<br>Provides professional and technical higher education through various departments offering Bachelor's and professional degrees recognized by employers. | Higher Education | 🇫🇷 Reims | 241 | 1966 |
| 7 | [Centre Hospitalier Léon Bourgeois de Châlons-en-Champagne](https://www.tamtam.ai/c/centre-hospitalier-leon-bourgeois-de-chalons-en-champagne) (ch-chalonsenchampagne.fr)<br>A community hospital offering a diverse range of medical and surgical services to a population of 110,000, with specialized facilities and partnerships with public and private institutions | Hospitals and Health Care | 🇫🇷 Châlons-en-Champagne | 229 |  |
| 8 | [SDIS 51 - Sapeurs-pompiers de la Marne](https://www.tamtam.ai/c/sdis-51-sapeurs-pompiers-de-la-marne) (sdis51.fr)<br>The company provides fire and rescue services with 1323 volunteer firefighters, 403 professional firefighters, and 92 administrative and technical staff | Public Safety | 🇫🇷 Fagnières | 223 | 1978 |
| 9 | [Greta CFA de la Marne](https://www.tamtam.ai/c/greta-cfa-de-la-marne) (academiereims.fr)<br>Public training organization part of the National Education training network Provides training for employees and job seekers, preparing for national diplomas in various sectors | Professional Training and Coaching | 🇫🇷 Reims | 220 | 1975 |
| 10 | [Centre Hospitalier AUBAN-MOET Epernay](https://www.tamtam.ai/c/centre-hospitalier-auban-moet-epernay) (ch-epernay.fr)<br>Provides diverse hospital care including emergency, surgery, medicine, obstetrics, and elderly care for over 100,000 residents. | Hospitals and Health Care | 🇫🇷 Épernay | 197 |  |
| 11 | [Châlons et son Agglo](https://www.tamtam.ai/c/chalons-et-son-agglo) (chalons-business.fr)<br>Support businesses with location, financial aid optimization, and integration into local economic networks within a thriving regional employment area. | Government Relations Services | 🇫🇷 Châlons-en-Champagne | 175 | 2000 |
| 12 | [Urssaf Champagne-Ardenne](https://www.tamtam.ai/c/urssaf-champagne-ardenne) (urssaf.fr)<br>The company is a network collecting social contributions for the financing of the general Social Security system They also promote employment policies and provide simplification services | Government Administration | 🇫🇷 Reims | 149 |  |
| 13 | [Reims habitat](https://www.tamtam.ai/c/reims-habitat) (reims-habitat.fr)<br>Management of 12,000 social housing units in Reims and surrounding areas, sustainable development, property ownership support, and co-ownership management. | Real Estate | 🇫🇷 Reims | 145 | 1921 |
| 14 | [University of Reims Champagne-Ardenne](https://www.tamtam.ai/c/university-of-reims-champagne-ardenne) (univ-reims.fr)<br>A multidisciplinary university offering programs in various fields, structured into 5 poles, with a total student population of 21,898 | Computer Networking Products | 🇫🇷 Reims | 111 |  |
| 15 | [Chambre d'agriculture de la Marne](https://www.tamtam.ai/c/chambre-d-agriculture-de-la-marne) (marne.chambres-agriculture.fr)<br>A consul organization supporting agricultural and winegrowers, advocating for their interests, promoting sustainable development, and fostering growth for a dynamic agricultural sector | Farming | 🇫🇷 Châlons-en-Champagne | 95 | 1924 |
| 16 | [Epernay Agglo Champagne](https://www.tamtam.ai/c/epernay-agglo-champagne) (epernay-agglo.fr)<br>Management of transport, waste, water, aquatic spaces, exhibition park, and promotion of local tourism and economic development. | Government Administration | 🇫🇷 Épernay | 83 |  |
| 17 | [Ville d'Epernay](https://www.tamtam.ai/c/ville-d-epernay) (epernay.fr)<br>A city in the Grand Est region known for its vineyards and Champagne houses, attracting tourists with its rich heritage, events, and associations | Government Administration | 🇫🇷 Épernay | 63 |  |
| 18 | [Inspé de l'académie de Reims](https://www.tamtam.ai/c/inspe-de-l-academie-de-reims) (univ-reims.fr)<br>A higher education institution affiliated with URCA located in Reims, France, providing education and research opportunities in various fields | Higher Education | 🇫🇷 Reims | 59 | 2019 |
| 19 | [Centre National des Arts du Cirque - CNAC](https://www.tamtam.ai/c/centre-national-des-arts-du-cirque-cnac) (cnac.fr)<br>This company specializes in the arts of the circus, offering training and resources to develop and showcase circus skills | Performing Arts | 🇫🇷 Châlons-en-Champagne | 57 | 1985 |
| 20 | [Comédie - CDN de Reims](https://www.tamtam.ai/c/comedie-cdn-de-reims) (lacomediedereims.fr)<br>A national theater housing artists and audiences, supporting unique projects with productions, residencies, and touring across France and beyond | Performing Arts | 🇫🇷 Reims | 47 | 1966 |
| 21 | [Parc naturel régional de la Montagne de Reims](https://www.tamtam.ai/c/parc-naturel-regional-de-la-montagne-de-reims) (parc-montagnedereims.fr)<br>A regional natural park established in 1976 to protect diverse flora and fauna in the Montagne de Reims region, known for its unique landscapes and geological features | Non-profit Organizations | 🇫🇷 Pourcy | 27 | 2000 |
| 22 | [CFPPA Avize Viti Campus](https://www.tamtam.ai/c/cfppa-avize-viti-campus) (avizeviticampus.fr)<br>This institution has been training wine and vineyard professionals for 30 years, offering programs in viticulture, machinery, winemaking, wine sales, and more | Professional Training and Coaching | 🇫🇷 Avize | 24 | 1988 |
| 23 | [Manège, scène nationale - Reims](https://www.tamtam.ai/c/manege-scene-nationale-reims) (manege-reims.eu)<br>A national theater in Reims hosting contemporary performances, promoting arts of movement like dance and circus, supporting creation, and cultural access | Performing Arts | 🇫🇷 Reims | 23 | 1991 |
| 24 | [Territoire d'énergie Marne (SIEM)](https://www.tamtam.ai/c/territoire-d-energie-marne-siem) (siem51.fr)<br>Management and modernization of electricity networks, public lighting, electric vehicle charging, and renewable energy projects for local communities. | Environmental Services | 🇫🇷 Châlons-en-Champagne | 13 | 1948 |
| 25 | [Institut International en Bioéconomie et Environnement EXEBIO - Université Reims Champagne-Ardenne](https://www.tamtam.ai/c/institut-international-en-bioeconomie-et-environnement-exebio-universite-reims) (exebio.fr)<br>The company focuses on bioeconomy and the environment, conducting research, training, and innovation to address societal challenges and promote sustainability | Higher Education | 🇫🇷 Reims | 12 | 2024 |

## 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 Marne department

- [The largest companies in the Marne department](https://www.tamtam.ai/l/largest-companies-marne) (463)
- [Manufacturers in the Marne department](https://www.tamtam.ai/l/manufacturers-marne) (61)
- [Multinational companies in the Marne department](https://www.tamtam.ai/l/multinational-companies-marne) (49)
- [Retail chains in the Marne department](https://www.tamtam.ai/l/retail-chains-marne) (48)
- [Family-owned companies in the Marne department](https://www.tamtam.ai/l/family-owned-companies-marne) (39)
- [Agriculture companies in the Marne department](https://www.tamtam.ai/l/agriculture-companies-marne) (37)
- [Luxury brands in the Marne department](https://www.tamtam.ai/l/luxury-brands-marne) (37)
- [Companies with in-house R&D in the Marne department](https://www.tamtam.ai/l/r-and-d-companies-marne) (35)
- [Food and beverage companies in the Marne department](https://www.tamtam.ai/l/food-and-beverage-companies-marne) (34)
- [Distributors and wholesalers in the Marne department](https://www.tamtam.ai/l/distributors-and-wholesalers-marne) (34)
- [Beverage Manufacturing companies in the Marne department](https://www.tamtam.ai/l/beverage-manufacturing-companies-marne) (31)
- [Education providers in the Marne department](https://www.tamtam.ai/l/education-companies-marne) (26)

## 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)

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