Tamtam Start free

Government Administration companies headquartered in the Yvelines department

Tamtam tracks 51 Government Administration companies headquartered in the Yvelines department. This list ranks the 30 largest by number of employees on LinkedIn, led by Département des Yvelines, SDIS 78 and Ville de Versailles. Their median headcount is 196. The most common headquarters are Versailles (10) and Plaisir (2).

🇫🇷 Yvelines30 companiesUpdated Nov 12, 2026

The government administration entities in Yvelines are primarily local government bodies and public service providers. These include large departmental organizations like Département des Yvelines, which provides social support and education, and SDIS 78, managing fire and rescue services. Other significant entities are Ville de Versailles, offering local services in the historic city, and Pôle Emploi, a public employment service.

The majority of these organizations are based in Versailles, indicating a strong concentration of administrative functions in the departmental capital. Many are well-established, with several founded in the mid-20th century, such as Crous de Versailles (1955) and Département des Yvelines (1964). They cover a broad spectrum of public services, from healthcare with CPAM des Yvelines to urban planning and community well-being with various city councils.

#CompanyIndustryHeadquarters EmployeesFounded
1
Département des Yvelinesyvelines.fr

Local government providing social support, education, mobility, and territorial development services to improve daily life for residents.

Government Administration 🇫🇷 Versailles 4,000 1964
2
SDIS 78sdis78.fr

Public establishment managing fire and rescue services in Yvelines, under mayors and prefects. Responsible for operations, personnel, and equipment.

Government Administration 🇫🇷 Versailles 1,061 1996
3
Ville de Versaillesversailles.fr

A historic city known for its palace and gardens, offering a vibrant local economy, employment opportunities in various fields, and a high quality of life

Government Administration 🇫🇷 Versailles 757 n/a
4
Pôle Emploipole-emploi.fr

Distributor of IKON, a platform helping companies improve IT service performance and business activities through unified real-time monitoring and data management.

Government Administration 🇫🇷 Plaisir 511 n/a
5
CPAM des Yvelinesameli.fr

A private organization serving the CNAM for public service, protecting over 15 million individuals by implementing healthcare policies locally in Yvelines

Government Administration 🇫🇷 Versailles 480 1981
6
Grand Paris Seine & Oisegpseo.fr

management of a large urban and rural territory focusing on economic sectors, innovation, infrastructure, environment, and public services organization

Government Administration 🇫🇷 Aubergenville 429 2016
7
Ville de Mantes-la-Joliemanteslajolie.fr

City near a natural park balancing historic center, residential areas, economic development, urban planning, and upcoming RER line connection.

Government Administration 🇫🇷 Mantes-la-Jolie 420 n/a
8
Crous de Versaillescrous-versailles.fr

State operator in charge of all student life aspects, serving 206,000 students in the Versailles academic region through 700 agents

Government Administration 🇫🇷 Versailles 344 1955
9
Mairie des Mureauxlesmureaux.fr

Provides administrative and local government services to residents and businesses in the Mureaux community within Yvelines, Île-de-France region.

Government Administration 🇫🇷 Les Mureaux 342 n/a
10
Mairie de Conflans Sainte Honorineconflans-sainte-honorine.fr

Local government entity managing administrative, social, and urban development services within Île de France, Yvelines department, and Grand Paris Seine & Oise community.

Government Administration 🇫🇷 Conflans-Sainte-Honorine 272 n/a
11
Mairie de Velizyvelizy-villacoublay.fr

Manage residential neighborhoods, economic activity centers, commercial hubs, and green spaces to maintain an attractive living environment near Paris.

Government Administration 🇫🇷 Velizy-Villacoublay 264 n/a
12
Ville de Saint-Germain-en-Layesaintgermainenlaye.fr

Local government managing urban development, cultural heritage, public services, infrastructure projects, and community well-being with a focus on sustainability and employment.

Government Administration 🇫🇷 Saint-Germain-en-Laye 252 n/a
13
Ville de Chatouchatou.fr

Local government focused on cultural heritage, digital transformation, eco-responsible administration, public service quality, and innovative human resources policies.

Government Administration 🇫🇷 Chatou 223 n/a
14
Ville de Montigny-le-Bretonneuxmontigny78.fr

Manages a French commune near Paris, focusing on environment, sports, and culture, housing major companies and Olympic venues, serving its residents.

Government Administration 🇫🇷 Montigny-le-Bretonneux 206 n/a
15
Caf des Yvelinescaf.fr

The company is a private organization providing public services in the Yvelines department, handling social benefits, family support, and migrant worker affairs

Government Administration 🇫🇷 Versailles 196 n/a

Want more companies than this list?

This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers.

Get more companies, free
16
Ville de Trappestrappes.fr

A city undergoing urban renewal with diverse housing, economic growth, quality public services, and a young, talented population determined to succeed

Government Administration 🇫🇷 Trappes 181 n/a
17
Préfecture des Yvelinesyvelines.gouv.fr

Official page of the Prefect and State services in Yvelines, providing information and updates on government activities and services

Government Administration 🇫🇷 Versailles 159 1968
18
Ville de Poissyville-poissy.fr

Manages a French city with a rich history, known for agriculture, trade, religious significance, and a strategic river crossing from antiquity to the present.

Government Administration 🇫🇷 Poissy 156 n/a
19
Ville de Houillesville-houilles.fr

The company is located in Houilles, a friendly city near Paris, focusing on urban development with a strong emphasis on quality of life and community engagement

Government Administration 🇫🇷 Houilles 154 n/a
20
Versailles Grand Parcversaillesgrandparc.fr

Versailles Grand Parc supports entrepreneurs and project leaders in urban ecology and innovative mobility, aiming to modernize and enhance their exceptional living environment

Government Administration 🇫🇷 Versailles 135 2003
21
24e régiment d'infanteriefacebook.com

A French infantry regiment, mainly composed of reserve military personnel, engaging in domestic security missions and deployment overseas, with a focus on recruitment

Government Administration 🇫🇷 Versailles 122 1775
22
DDT 78yvelines.gouv.fr

Government agency responsible for regional planning and development in the department 78, implementing policies related to land use and environmental management

Government Administration 🇫🇷 Versailles 115 n/a
23
Ville de Maisons-Laffittemaisonslaffitte.fr

Official online platform providing residents and visitors with information about local administration, services, events, and community resources.

Government Administration 🇫🇷 Maisons-Laffitte 112 n/a
24
Ville de Marly-le-Roimarlyleroi.fr

A vibrant town in Yvelines, near Paris, attracting businesses and residents with quality public services, a green setting, and diverse economic opportunities Join us!

Government Administration 🇫🇷 Marly-le-Roi 110 n/a
25
Mairie du Vésinetvilleduvesinet.fr

municipal administration managing historic heritage, green spaces, and community projects to enhance quality of life and sustainability for residents

Government Administration 🇫🇷 Le Vésinet 104 1875
26
Ville de Carrières-sous-Poissycarrieres-sous-poissy.fr

Official online presence providing information and updates about the city, its services, and community activities for residents and visitors.

Government Administration 🇫🇷 Carrières-sous-Poissy 101 1993
27
Ville de Jouy-en-Josasjouy-en-josas.fr

The company is a municipality located in Jouy-en-Josas, Yvelines, focusing on providing a high quality of life for its residents while promoting ecological and energy transition

Government Administration 🇫🇷 Jouy-en-Josas 97 1790
28
Ville de Plaisirville-plaisir.fr

Provides residential living with cultural, sports, and commercial facilities in a dynamic economic environment near Paris, supporting community development.

Government Administration 🇫🇷 Plaisir 92 n/a
29
Mairie des Clayes-sous-Boislesclayessousbois.fr

A town in a UNESCO World Heritage site, Les Clayes-sous-Bois offers a pleasant living environment with a strong economic activity and vibrant community life

Government Administration 🇫🇷 Les Clayes-sous-Bois 85 n/a
30
CASGBS - Communauté d'agglomération Saint Germain Boucles de Seinesaintgermainbouclesdeseine.fr

Join a dynamic intercommunal organization near Paris, dedicated to innovation in active mobility, environment, economic development, and more for the benefit of its diverse population

Government Administration 🇫🇷 Le Pecq 78 2016

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

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 Yvelines department

The same list elsewhere in France

The same list elsewhere