# Top 26 Government Administration companies in the Val-d'Oise department

Tamtam tracks 26 Government Administration companies headquartered in the Val-d'Oise department. This list ranks all of them by number of employees on LinkedIn, led by Hôpital Simone Veil - Groupement hospitalier Eaubonne-Montmorency, Service Départemental d'Incendie et de Secours du Val-d'Oise - SDIS 95 and Communauté d'agglomération de Cergy Pontoise. Their median headcount is 111. The most common headquarters are Cergy (2) and Sarcelles (2).

These government administration entities in Val-d'Oise are primarily public service providers, ranging from hospitals to local municipalities and intercommunal structures. The list includes large public institutions and mid-sized local government bodies.

Among them are Hôpital Simone Veil, a public hospital offering diverse medical services, and SDIS 95, managing emergency services. Communauté d'agglomération de Cergy Pontoise oversees thirteen communes, while CPAM du Val-d'Oise supports healthcare access. Ville d'Argenteuil promotes cultural heritage, and ANCV manages holiday vouchers for employees. A common pattern is the prevalence of municipal administrations, indicating a focus on local governance and public services across the department.

🇫🇷 Val-d'Oise · 26 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Hôpital Simone Veil - Groupement hospitalier Eaubonne-Montmorency](https://www.tamtam.ai/c/hopital-simone-veil-groupement-hospitalier-eaubonne-montmorency) (hopital-simoneveil.fr)<br>Public hospital offering diverse medical, surgical, pediatric, psychiatric, and elderly care services with advanced equipment and extensive patient support. | Government Administration | 🇫🇷 Eaubonne | 1,008 |  |
| 2 | [Service Départemental d'Incendie et de Secours du Val-d'Oise - SDIS 95](https://www.tamtam.ai/c/service-departemental-d-incendie-et-de-secours-du-val-d-oise-sdis-95) (pompiers95.fr)<br>The service department manages emergency services in Val-d’Oise, hiring firefighters and administrative staff to support public safety and rescue operations | Government Administration | 🇫🇷 Neuville-sur-Oise | 711 | 1972 |
| 3 | [Communauté d'agglomération de Cergy Pontoise](https://www.tamtam.ai/c/communaute-d-agglomeration-de-cergy-pontoise) (cergypontoise.fr)<br>Intercommunal structure managing thirteen communes and 200,000 residents across 8,000 hectares in western Île-de-France region. | Government Administration | 🇫🇷 Cergy | 363 | 1969 |
| 4 | [CPAM du Val-d'Oise](https://www.tamtam.ai/c/cpam-du-val-d-oise) (ameli.fr)<br>The company, part of the national health security system, supports over 11 million individuals in accessing healthcare services and managing health expenses | Government Administration | 🇫🇷 Cergy | 338 |  |
| 5 | [Ville d'Argenteuil](https://www.tamtam.ai/c/ville-d-argenteuil) (argenteuil.fr)<br>City near Paris with rich history, natural parks, gardens, and recreational areas promoting cultural heritage and quality living environment. | Government Administration | 🇫🇷 Argenteuil | 287 |  |
| 6 | [Mairie de Garges](https://www.tamtam.ai/c/mairie-de-garges) (villedegarges.fr)<br>Local government managing community projects, social inclusion, economic development, employee well-being, and public services for diverse urban population. | Government Administration | 🇫🇷 Garges-lès-Gonesse | 249 |  |
| 7 | [ANCV](https://www.tamtam.ai/c/ancv) (ancv.com)<br>A public establishment managing holiday vouchers to help 33 million employees go on vacation Profits fund holiday programs for disadvantaged populations | Government Administration | 🇫🇷 Sarcelles | 230 |  |
| 8 | [Mairie de Goussainville](https://www.tamtam.ai/c/mairie-de-goussainville) (ville-goussainville.fr)<br>Local government organization providing services and support to residents of Goussainville, France Managing public affairs and promoting community development | Government Administration | 🇫🇷 Goussainville | 218 |  |
| 9 | [Mairie de Cormeilles-en-Parisis](https://www.tamtam.ai/c/mairie-de-cormeilles-en-parisis) (ville-cormeilles95.fr)<br>Provides information on municipal job and internship opportunities, enabling online applications for positions within the local government administration. | Government Administration | 🇫🇷 Cormeilles-en-Parisis | 155 |  |
| 10 | [Ville de Sarcelles](https://www.tamtam.ai/c/ville-de-sarcelles) (sarcelles.fr)<br>A city in Val d'Oise, France, undergoing transformation with ambitious urban development, educational excellence, and community cohesion projects | Government Administration | 🇫🇷 Sarcelles | 142 |  |
| 11 | [Ville de Bezons](https://www.tamtam.ai/c/ville-de-bezons) (ville-bezons.fr)<br>Local government providing community services, managing economic development, offering employment opportunities, and maintaining quality living environment in Bezons area. | Government Administration | 🇫🇷 Bezons | 131 |  |
| 12 | [Mairie d'Ermont](https://www.tamtam.ai/c/mairie-d-ermont) (ermont.fr)<br>Local government providing municipal services, managing city affairs, and offering employment, internships, and apprenticeship opportunities to residents. | Government Administration | 🇫🇷 Ermont | 117 |  |
| 13 | [VILLE DE DEUIL-LA BARRE](https://www.tamtam.ai/c/ville-de-deuil-la-barre) (mairie-deuillabarre.fr)<br>A vibrant city focused on sports, health, culture, social cohesion, safety, and green mobility, fostering a high quality of life. | Government Administration | 🇫🇷 Deuil-la-Barre | 111 | 1789 |
| 14 | [Ville de Villiers-le-Bel](https://www.tamtam.ai/c/ville-de-villiers-le-bel) (ville-villiers-le-bel.fr)<br>Provides municipal services, manages local government operations, offers information and job opportunities to residents and community members. | Government Administration | 🇫🇷 Villiers-le-Bel | 109 |  |
| 15 | [Ville d'Enghien-les-Bains](https://www.tamtam.ai/c/ville-d-enghien-les-bains) (enghienlesbains.fr)<br>Thermal spa town with casino, lake, cultural arts, sports facilities, quality hotels, restaurants, and recognized for tourism and creativity. | Government Administration | 🇫🇷 Enghien-les-Bains | 109 |  |
| 16 | [Mairie d'Osny](https://www.tamtam.ai/c/mairie-d-osny) (osny.fr)<br>Local government providing municipal services and community support for residents within the Val d'Oise area and Cergy-Pontoise agglomeration. | Government Administration | 🇫🇷 Osny | 109 |  |
| 17 | [Ville de Pontoise](https://www.tamtam.ai/c/ville-de-pontoise) (ville-pontoise.fr)<br>A historical city with over 32,000 residents, located near Paris, at the heart of the Cergy-Pontoise urban area Visit their website for job opportunities | Government Administration | 🇫🇷 Pontoise | 104 |  |
| 18 | [Ville de Taverny](https://www.tamtam.ai/c/ville-de-taverny) (ville-taverny.fr)<br>Suburban town near Paris with green spaces, public services, transport, commerce, culture, safety, and community well-being initiatives. | Government Administration | 🇫🇷 Taverny | 101 |  |
| 19 | [Ville de Soisy-sous-Montmorency](https://www.tamtam.ai/c/ville-de-soisy-sous-montmorency) (soisy-sous-montmorency.fr)<br>Municipality located in Val d’Oise, offering a privileged living environment near Enghien lake and Montmorency forest, accessible by highway and public transport. | Government Administration | 🇫🇷 Soisy-sous-Montmorency | 98 |  |
| 20 | [Ville de Montigny-lès-Cormeilles](https://www.tamtam.ai/c/ville-de-montigny-les-cormeilles) (montigny95.fr)<br>Dynamic municipality near Paris offering quality public services with innovation, humanism, and social values 450 employees serving the needs of its residents | Government Administration | 🇫🇷 Montigny-lès-Cormeilles | 96 |  |
| 21 | [Ville d'Eaubonne](https://www.tamtam.ai/c/ville-d-eaubonne) (eaubonne.fr)<br>Residential city near Paris focusing on community projects in citizenship, ecology, education, youth, and culture to enhance livability. | Government Administration | 🇫🇷 Eaubonne | 87 |  |
| 22 | [Ville de Sannois](https://www.tamtam.ai/c/ville-de-sannois) (ville-sannois.fr)<br>The company promotes the town of Sannois, known for its residential area surrounded by hills with green spaces, vineyards, and a windmill from the 18th century | Government Administration | 🇫🇷 Sannois | 75 |  |
| 23 | [Plaine Vallée Agglo](https://www.tamtam.ai/c/plaine-vallee-agglo) (agglo-plainevallee.fr)<br>Intercommunal organization managing 18 communes near Paris, focusing on mobility, education, employment, urban-rural balance, and economic development. | Government Administration | 🇫🇷 Soisy-sous-Montmorency | 74 | 2016 |
| 24 | [Ville de Saint Gratien](https://www.tamtam.ai/c/ville-de-saint-gratien) (ville-saintgratien.fr)<br>Local government promoting cultural heritage, environmental preservation, sports activities, commerce, and beautification with notable trees and floral awards. | Government Administration | 🇫🇷 Saint-Gratien | 68 |  |
| 25 | [Ville de Montmorency](https://www.tamtam.ai/c/ville-de-montmorency) (ville-montmorency.fr)<br>A dynamic municipality near Paris focused on service modernization and innovation, offering extensive public services, recreational facilities, and cultural events | Government Administration | 🇫🇷 Montmorency | 55 |  |
| 26 | [Ville de Vauréal](https://www.tamtam.ai/c/ville-de-vaureal) (vaureal.fr)<br>The company is located in Vauréal, offering a peaceful city life with a countryside feel and vibrant urban atmosphere | Government Administration | 🇫🇷 Vauréal | 29 |  |

## 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 Val-d'Oise department

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- [Distributors and wholesalers in the Val-d'Oise department](https://www.tamtam.ai/l/distributors-and-wholesalers-val-doise) (67)
- [Retail chains in the Val-d'Oise department](https://www.tamtam.ai/l/retail-chains-val-doise) (56)
- [Professional services firms in the Val-d'Oise department](https://www.tamtam.ai/l/professional-services-firms-val-doise) (44)
- [Family-owned companies in the Val-d'Oise department](https://www.tamtam.ai/l/family-owned-companies-val-doise) (42)
- [IT services companies in the Val-d'Oise department](https://www.tamtam.ai/l/it-services-companies-val-doise) (42)
- [IT Services and IT Consulting companies in the Val-d'Oise department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-val-doise) (38)
- [Transportation, Logistics, Supply Chain and Storage companies in the Val-d'Oise department](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-val-doise) (33)
- [Aerospace and defence companies in the Val-d'Oise department](https://www.tamtam.ai/l/aerospace-and-defense-companies-val-doise) (31)
- [Public sector organisations in the Val-d'Oise department](https://www.tamtam.ai/l/public-sector-organisations-val-doise) (30)
- [Construction companies in the Val-d'Oise department](https://www.tamtam.ai/l/construction-companies-val-doise) (29)
- [Wholesale companies in the Val-d'Oise department](https://www.tamtam.ai/l/wholesale-companies-val-doise) (29)
- [Healthcare providers in the Val-d'Oise department](https://www.tamtam.ai/l/healthcare-providers-val-doise) (27)
- [Industrial Machinery Manufacturing companies in the Val-d'Oise department](https://www.tamtam.ai/l/industrial-machinery-manufacturing-companies-val-doise) (27)
- [Logistics companies in the Val-d'Oise department](https://www.tamtam.ai/l/logistics-companies-val-doise) (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)
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- [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)
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- [Government Administration companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/government-administration-companies-bouches-du-rhone) (57)
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- [Government Administration companies in the Rhône department](https://www.tamtam.ai/l/government-administration-companies-rhone) (51)
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- [Government Administration companies in the Seine-et-Marne department](https://www.tamtam.ai/l/government-administration-companies-seine-et-marne) (39)
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## 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-val-doise