# The 30 largest Government Administration companies in the Seine-et-Marne department

Tamtam tracks 39 Government Administration companies headquartered in the Seine-et-Marne department. This list ranks the 30 largest by number of employees on LinkedIn, led by Département de Seine et Marne, UGAP and Grand Hôpital de l'Est Francilien. Their median headcount is 132. The most common headquarters are Meaux (4), Fontainebleau (2) and Melun (2).

These companies in Seine-et-Marne are primarily government administration entities, ranging from departmental councils to municipal governments and public commercial entities. They are mostly mid-sized to large organizations, reflecting the scale of public service provision. Notable examples include Département de Seine et Marne, providing diverse public services, and UGAP, the sole general public procurement center in France. Grand Hôpital de l'Est Francilien offers extensive medical care, while Mairie de Meaux manages urban development and public safety.

A significant pattern is the prevalence of local government bodies, such as Ville de Pontault-Combault, focusing on recreational facilities and community well-being, and Ville de Savigny-le-Temple, which provides updates on local economic activity. Many of these entities are headquartered in various towns across Seine-et-Marne, indicating a decentralized administrative structure within the department.

🇫🇷 Seine-et-Marne · 30 companies · Updated Nov 14, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Département de Seine et Marne](https://www.tamtam.ai/c/departement-de-seine-et-marne) (seine-et-marne.fr)<br>Provides diverse public services, including social action, territorial development, culture, youth, and education, to residents, focusing on quality and employee well-being. | Government Administration | 🇫🇷 Melun | 1,531 |  |
| 2 | [UGAP](https://www.tamtam.ai/c/ugap) (ugap.fr)<br>A French public commercial entity founded in 1985, serving various sectors by acting as the sole general public procurement center in France | Government Administration | 🇫🇷 Champs-sur-Marne | 1,363 |  |
| 3 | [Grand Hôpital de l'Est Francilien](https://www.tamtam.ai/c/grand-hopital-de-l-est-francilien) (ghef.fr)<br>Integrated hospital network providing extensive medical and psychiatric care across multiple sites, serving the northern Seine-et-Marne population. | Government Administration | 🇫🇷 Meaux | 904 | 2017 |
| 4 | [Mairie de Meaux](https://www.tamtam.ai/c/mairie-de-meaux) (ville-meaux.fr)<br>Manage urban development, enhance public safety with advanced surveillance, promote community events, and support demographic growth near Paris. | Government Administration | 🇫🇷 Meaux | 291 |  |
| 5 | [Ville de Pontault-Combault](https://www.tamtam.ai/c/ville-de-pontault-combault) (pontault-combault.fr)<br>Local government providing recreational facilities, sports programs, natural spaces, cultural events, and citizen participation initiatives for community well-being. | Government Administration | 🇫🇷 Pontault-Combault | 275 |  |
| 6 | [Ville de Savigny-le-Temple](https://www.tamtam.ai/c/ville-de-savigny-le-temple) (savigny-le-temple.fr)<br>Provides updates on local economic activity, commercial dynamism, and major urban projects shaping the community and city development. | Government Administration | 🇫🇷 Savigny-le-Temple | 196 |  |
| 7 | [Ville de CHELLES](https://www.tamtam.ai/c/ville-de-chelles) (chelles.fr)<br>Local government providing municipal services, environmental management, community information, and employment opportunities within a growing urban area near Paris. | Government Administration | 🇫🇷 Chelles | 194 |  |
| 8 | [Foyer de l'enfance de Meaux](https://www.tamtam.ai/c/foyer-de-l-enfance-de-meaux) (facebook.com)<br>The company provides emergency care and protection for minors in danger, offering 74 places for children aged 0 to 18 in a multidisciplinary setting | Government Administration | 🇫🇷 Meaux | 168 | 1992 |
| 9 | [Ville de Melun](https://www.tamtam.ai/c/ville-de-melun) (melun.fr)<br>Administrative center with rich heritage, natural beauty, modern infrastructure, hosting numerous institutions, businesses, and cultural facilities in a dynamic community. | Government Administration | 🇫🇷 Melun | 163 |  |
| 10 | [Paris - Vallée de la Marne](https://www.tamtam.ai/c/paris-vallee-de-la-marne) (agglo-pvm.fr)<br>A dynamic community in Seine-et-Marne, focusing on balanced, sustainable development in the East Parisian and Greater Paris area for residents and businesses | Government Administration | 🇫🇷 Torcy | 154 | 2016 |
| 11 | [CCI Seine-et-Marne](https://www.tamtam.ai/c/cci-seine-et-marne) (seineetmarne.cci.fr)<br>Support businesses of all sizes and sectors through development stages, represent interests, collaborate with government, and promote regional economic growth. | Government Administration | 🇫🇷 Serris | 143 |  |
| 12 | [Communauté d'Agglomération Melun Val de Seine](https://www.tamtam.ai/c/communaute-d-agglomeration-melun-val-de-seine) (melunvaldeseine.fr)<br>Regional urban community managing 20 communes, focusing on sustainable development, economic growth, cultural vitality, and ecological transition. | Government Administration | 🇫🇷 Dammarie-lès-Lys | 140 | 2002 |
| 13 | [Ville de Fontainebleau](https://www.tamtam.ai/c/ville-de-fontainebleau) (fontainebleau.fr)<br>Preservation of historical heritage, promotion of equestrian activities, cultural tourism, and hosting events in a historically rich French town. | Government Administration | 🇫🇷 Fontainebleau | 138 |  |
| 14 | [Mairie de Villeparisis](https://www.tamtam.ai/c/mairie-de-villeparisis) (villeparisis.fr)<br>This company is the official account of the municipality of Villeparisis, a community in Roissy Pays de France, Seine-et-Marne They provide information about the city and its proximity to notable locations | Government Administration | 🇫🇷 Villeparisis | 134 |  |
| 15 | [Communauté d'Agglomération de Marne et Gondoire](https://www.tamtam.ai/c/communaute-d-agglomeration-de-marne-et-gondoire) (marneetgondoire.fr)<br>Management and development of a regional community comprising 20 municipalities, focusing on local governance, population growth, and regional services. | Government Administration | 🇫🇷 Bussy-Saint-Martin | 132 | 2001 |
| 16 | [Mairie de Bussy-Saint-Georges](https://www.tamtam.ai/c/mairie-de-bussy-saint-georges) (bussysaintgeorges.fr)<br>The company is located in Bussy-Saint-Georges, Seine-et-Marne, a growing city with a significant population increase and attractive amenities for residents and businesses | Government Administration | 🇫🇷 Bussy-Saint-Georges | 129 |  |
| 17 | [Ville de Dammarie-lès-Lys](https://www.tamtam.ai/c/ville-de-dammarie-les-lys) (mairie-dammarie-les-lys.fr)<br>Local government managing urban development, green spaces, cultural and sports facilities, supporting community activities, and promoting responsible, dynamic city life. | Government Administration | 🇫🇷 Dammarie-lès-Lys | 123 |  |
| 18 | [Ville de Lagny-sur-Marne](https://www.tamtam.ai/c/ville-de-lagny-sur-marne) (lagny-sur-marne.fr)<br>City with rich heritage, local tourism attractions, over 21,000 residents, quality environment, river Marne, and abundant green spaces. | Government Administration | 🇫🇷 Lagny-sur-Marne | 114 |  |
| 19 | [Val d'Europe Agglomération](https://www.tamtam.ai/c/val-d-europe-agglomeration) (valdeuropeagglo.fr)<br>Focused on creating a balanced, coherent, and sustainable urban area, ensuring resident well-being and supporting economic actors across its ten communes. | Government Administration | 🇫🇷 Chessy | 92 | 1987 |
| 20 | [Ville de Lieusaint](https://www.tamtam.ai/c/ville-de-lieusaint) (ville-lieusaint.fr)<br>Manages public infrastructure, schools, and cultural centers while developing green spaces, ecological neighborhoods, and transport links for thirteen thousand residents in Seine-et-Marne. | Government Administration | 🇫🇷 Lieusaint | 92 |  |
| 21 | [Epms Fondation Hardy](https://www.tamtam.ai/c/epms-fondation-hardy) (epms-hardy.com)<br>EPMS supports individuals with disabilities in defining and implementing personal projects, focusing on individual needs and abilities through tailored care and support | Government Administration | 🇫🇷 Marles-en-Brie | 91 | 1905 |
| 22 | [Ville de Lognes](https://www.tamtam.ai/c/ville-de-lognes) (mairie-lognes.fr)<br>The Ville de Lognes, located in Seine-et-Marne near Paris, is known for its quality of life and beautiful lakes Stay updated on city news and job opportunities | Government Administration | 🇫🇷 Lognes | 86 |  |
| 23 | [Ville de Roissy-en-Brie](https://www.tamtam.ai/c/ville-de-roissy-en-brie) (roissyenbrie77.fr)<br>A dynamic city in the heart of Seine-et-Marne, Roissy-en-Brie offers a prime living environment near Paris, with a focus on economic growth and community services Apply for opportunities | Government Administration | 🇫🇷 Roissy-en-Brie | 85 |  |
| 24 | [Pays de Meaux Communauté d'Agglomeration - CAPM](https://www.tamtam.ai/c/pays-de-meaux-communaute-d-agglomeration-capm) (agglo-paysdemeaux.fr)<br>The company aims to improve the quality of life for its residents through sustainable development, focusing on employment, economic growth, and cultural initiatives | Government Administration | 🇫🇷 Meaux | 72 | 2003 |
| 25 | [Ville de Vaux-le-Pénil](https://www.tamtam.ai/c/ville-de-vaux-le-penil) (mairie-vaux-le-penil.fr)<br>A community with 11,039 residents, 280 employees, 18 municipal facilities, over 175 associations, and rich cultural, historical, and natural assets | Government Administration | 🇫🇷 Vaux-le-Pénil | 69 | 1256 |
| 26 | [Pays de Fontainebleau](https://www.tamtam.ai/c/pays-de-fontainebleau) (pays-fontainebleau.fr)<br>The intermunicipal community of Pays de Fontainebleau manages public services and infrastructure for 26 municipalities, focusing on development and urban planning | Government Administration | 🇫🇷 Fontainebleau | 63 | 2017 |
| 27 | [Ville de Thorigny-sur-Marne](https://www.tamtam.ai/c/ville-de-thorigny-sur-marne) (thorigny.fr)<br>Official page for the local government of Thorigny-sur-Marne, providing information and services to residents and visitors in the area | Government Administration | 🇫🇷 Thorigny-sur-Marne | 60 | 1900 |
| 28 | [EPMS de l'Ourcq](https://www.tamtam.ai/c/epms-de-l-ourcq) (epms-ourcq.fr)<br>The company focuses on supporting individuals with neuro-developmental disorders, promoting social inclusion, and aligning services with public policies and user expectations | Government Administration | 🇫🇷 Claye-Souilly | 60 | 1972 |
| 29 | [Mairie de Cesson](https://www.tamtam.ai/c/mairie-de-cesson) (ville-cesson.fr)<br>Government administration company located in Cesson, France, specializing in providing services related to government functions and regulations in Îledefrance | Government Administration | 🇫🇷 Cesson | 59 |  |
| 30 | [Ville de Claye-Souilly](https://www.tamtam.ai/c/ville-de-claye-souilly) (claye-souilly.fr)<br>The company is located in Claye-Souilly, a town with a countryside feel near Paris, offering quality amenities, green spaces, and promoting eco-friendly transportation | Government Administration | 🇫🇷 Claye-Souilly | 59 |  |

## 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 14, 2026.

## More company lists in the Seine-et-Marne department

- [The largest companies in the Seine-et-Marne department](https://www.tamtam.ai/l/largest-companies-seine-et-marne) (946)
- [Multinational companies in the Seine-et-Marne department](https://www.tamtam.ai/l/multinational-companies-seine-et-marne) (139)
- [Companies with in-house R&D in the Seine-et-Marne department](https://www.tamtam.ai/l/r-and-d-companies-seine-et-marne) (104)
- [Manufacturers in the Seine-et-Marne department](https://www.tamtam.ai/l/manufacturers-seine-et-marne) (100)
- [Hardware manufacturers in the Seine-et-Marne department](https://www.tamtam.ai/l/hardware-companies-seine-et-marne) (84)
- [Distributors and wholesalers in the Seine-et-Marne department](https://www.tamtam.ai/l/distributors-and-wholesalers-seine-et-marne) (82)
- [Retail chains in the Seine-et-Marne department](https://www.tamtam.ai/l/retail-chains-seine-et-marne) (68)
- [Construction companies in the Seine-et-Marne department](https://www.tamtam.ai/l/construction-companies-seine-et-marne) (57)
- [Public sector organisations in the Seine-et-Marne department](https://www.tamtam.ai/l/public-sector-organisations-seine-et-marne) (49)
- [Family-owned companies in the Seine-et-Marne department](https://www.tamtam.ai/l/family-owned-companies-seine-et-marne) (48)
- [Professional services firms in the Seine-et-Marne department](https://www.tamtam.ai/l/professional-services-firms-seine-et-marne) (41)
- [Industrial Machinery Manufacturing companies in the Seine-et-Marne department](https://www.tamtam.ai/l/industrial-machinery-manufacturing-companies-seine-et-marne) (34)
- [Wholesale companies in the Seine-et-Marne department](https://www.tamtam.ai/l/wholesale-companies-seine-et-marne) (34)
- [Critical infrastructure operators in the Seine-et-Marne department](https://www.tamtam.ai/l/critical-infrastructure-operators-seine-et-marne) (33)
- [Retail companies in the Seine-et-Marne department](https://www.tamtam.ai/l/retail-companies-seine-et-marne) (33)
- [Education providers in the Seine-et-Marne department](https://www.tamtam.ai/l/education-companies-seine-et-marne) (31)
- [IT Services and IT Consulting companies in the Seine-et-Marne department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-seine-et-marne) (31)
- [IT services companies in the Seine-et-Marne department](https://www.tamtam.ai/l/it-services-companies-seine-et-marne) (29)
- [Contract manufacturers in the Seine-et-Marne department](https://www.tamtam.ai/l/contract-manufacturers-seine-et-marne) (26)
- [Healthcare providers in the Seine-et-Marne department](https://www.tamtam.ai/l/healthcare-providers-seine-et-marne) (26)
- [Higher Education companies in the Seine-et-Marne department](https://www.tamtam.ai/l/higher-education-companies-seine-et-marne) (25)

## The same list elsewhere in France

- [Government Administration companies in France](https://www.tamtam.ai/l/government-administration-companies-france) (1,862)
- [Government Administration companies in Île-de-France](https://www.tamtam.ai/l/government-administration-companies-ile-de-france) (496)
- [Government Administration companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/government-administration-companies-auvergne-rhone-alpes) (201)
- [Government Administration companies in Grand Est](https://www.tamtam.ai/l/government-administration-companies-grand-est) (168)
- [Government Administration companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/government-administration-companies-provence-alpes-cote-dazur) (150)
- [Government Administration companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/government-administration-companies-nouvelle-aquitaine) (145)
- [Government Administration companies in Occitanie](https://www.tamtam.ai/l/government-administration-companies-occitanie) (138)
- [Government Administration companies in Hauts-de-France](https://www.tamtam.ai/l/government-administration-companies-hauts-de-france) (126)
- [Government Administration companies in Pays de la Loire](https://www.tamtam.ai/l/government-administration-companies-pays-de-la-loire) (96)
- [Government Administration companies in Normandy](https://www.tamtam.ai/l/government-administration-companies-normandy) (93)
- [Government Administration companies in Brittany](https://www.tamtam.ai/l/government-administration-companies-brittany) (81)
- [Government Administration companies in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/government-administration-companies-bourgogne-franche-comte) (69)
- [Government Administration companies in Centre-Val de Loire](https://www.tamtam.ai/l/government-administration-companies-centre-val-de-loire) (64)
- [Government Administration companies in the Nord department](https://www.tamtam.ai/l/government-administration-companies-nord) (58)
- [Government Administration companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/government-administration-companies-bouches-du-rhone) (57)
- [Government Administration companies in the Seine-Saint-Denis department](https://www.tamtam.ai/l/government-administration-companies-seine-saint-denis) (53)
- [Government Administration companies in the Rhône department](https://www.tamtam.ai/l/government-administration-companies-rhone) (51)
- [Government Administration companies in the Yvelines department](https://www.tamtam.ai/l/government-administration-companies-yvelines) (51)
- [Government Administration companies in the Gironde department](https://www.tamtam.ai/l/government-administration-companies-gironde) (46)
- [Government Administration companies in the Val-de-Marne department](https://www.tamtam.ai/l/government-administration-companies-val-de-marne) (45)
- [Government Administration companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/government-administration-companies-hauts-de-seine) (43)
- [Government Administration companies in the Haute-Garonne department](https://www.tamtam.ai/l/government-administration-companies-haute-garonne) (42)
- [Government Administration companies in the Loire-Atlantique department](https://www.tamtam.ai/l/government-administration-companies-loire-atlantique) (35)
- [Government Administration companies in Paris](https://www.tamtam.ai/l/government-administration-companies-paris) (176)

## The same list elsewhere

- [Government Administration companies in the world](https://www.tamtam.ai/l/government-administration-companies-in-the-world) (8,776)
- [Government Administration companies in Europe](https://www.tamtam.ai/l/government-administration-companies-in-europe) (4,201)

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Source: https://www.tamtam.ai/l/government-administration-companies-seine-et-marne