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Data / France companies / Yvelines / Fontenay-le-Fleury

Companies in Fontenay-le-Fleury, Yvelines: 669 active companies by industry

Updated November 7, 2026. Source: INSEE, base Sirene des entreprises et de leurs établissements, on data.gouv.fr.

669 active companies have their head office in Fontenay-le-Fleury, Yvelines, in the Sirene register stock dated 1 November 2026. 54 were registered in the last 12 months, 3 of them in October 2026, and 107 have employees.

The request: Every French company with head office in Fontenay-le-Fleury, with SIREN, NAF code, registration date, address and employee band. $10 of work on sign-up, no card.

Get companies in Fontenay-le-FleuryWatch new registrations in Fontenay-le-Fleury

SpecStream is the live web data engine for teams and agents. It reads the Sirene register every month, and this page is that reading. Ask for the companies you track by industry, place or registration date and each new company arrives in your sheet, CRM, Slack or agent.

  • 669Active companies
  • 54Registered in the last 12 months
  • 3Registered in October 2026
  • 107 (16.0%)With employees
  • YvelinesDepartment
  • 78242Commune code

Registrations in the last 12 months

Active companies by the month their registration date falls in. The newest month is the last full month before the stock date.

MonthCompanies registered
October 20263
September 20266
August 20261
July 20264
June 20263
May 20263
April 20263
March 20267
February 20264
January 20265
December 202510
November 20255

Registrations per year

Companies registered in each year that are still active in the 1 November 2026 stock. Companies that closed earlier are not counted, so older years read low.

Year registeredActive companies
202234
202342
202439
202554
2026 so far39

By number of employees

The employee band the register holds for each company, as declared for its latest reference year.

EmployeesActive companiesShare
No employees or not declared56284.0%
1 to 9 employees9714.5%
10 to 49 employees81.2%
50 to 249 employees20.3%
250 employees or more00.0%

Biggest industries

A link opens the industry in this town where 80 or more companies list it.

IndustryNAF codeActive companies
Renting of land and other real estate68.20B138
Business and other management consultancy activities70.22Z35
Computer systems and software consultancy62.02A23
Renting and leasing of other machinery, equipment and tangible goods n.e.c.77.39Z18
Taxi operation49.32Z17
Electrical installation in all premises43.21A14
Water and gas installation in all premises43.22A13
Construction of detached houses41.20A12
General masonry and building shell work43.99C12
Activities of head offices70.10Z12
Engineering and technical consultancy71.12B12
Activities of holding companies64.20Z11
Renting of housing68.20A11
Fast-food restaurants56.10C10
Fund management activities66.30Z10
Real estate agencies68.31Z10
Hairdressing96.02A10
Traditional restaurants56.10A9
Computer programming activities62.01Z8
Wood and PVC joinery installation43.32A6
General food stores47.11B6
Data processing, hosting and related activities63.11Z6
Short-term renting of cars and light motor vehicles77.11A6
Legal vehicles for development programmes41.10D5
Floor and wall covering43.33Z5
Bakeries and bakery-pastry shops10.71C4
Heating and air conditioning installation43.22B4
Maintenance and repair of light motor vehicles45.20A4
Wholesale of computers, computer peripheral equipment and software46.51Z4
Management of buildings and other real estate68.32A4
Organisation of conventions and trade shows82.30Z4
Painting and glazing43.34Z3
Other building completion and finishing43.39Z3
Sale of cars and light motor vehicles45.11Z3
Other agents involved in the sale of a variety of goods46.19B3
Wholesale of miscellaneous industrial supplies and equipment46.69B3
Non-specialised wholesale trade46.90Z3
Supermarkets47.11D3
Retail sale of meat and meat products in specialised stores47.22Z3
Opticians47.78A3

Newest registered companies

Newest first. Only companies with a name that is clearly a business are listed; the counts above include every active company. Each row links to the public record.

CompanySIRENRegisteredNAF codeSource
Mesnil 513182003713 October 202668.20Bannuaire-entreprises.data.gouv.fr
Optisysexpert1313975158 October 202662.02Aannuaire-entreprises.data.gouv.fr
LEV Groupe1311462012 October 202677.32Zannuaire-entreprises.data.gouv.fr
Outcomes13072635928 September 202670.22Zannuaire-entreprises.data.gouv.fr
Tyneo13046205416 September 202646.61Zannuaire-entreprises.data.gouv.fr
Afoulki13019734615 September 2026annuaire-entreprises.data.gouv.fr
ATB 851094393071 September 202646.51Zannuaire-entreprises.data.gouv.fr
Cqms10918472126 August 202646.51Zannuaire-entreprises.data.gouv.fr
Securai10825178630 July 202662.01Zannuaire-entreprises.data.gouv.fr
Sall Investissements10784894720 July 202670.10Zannuaire-entreprises.data.gouv.fr
G-Nexus Distribution1073609359 July 202647.11Dannuaire-entreprises.data.gouv.fr
France Service10695583429 June 202695.11Zannuaire-entreprises.data.gouv.fr

Licence Ouverte / Open Licence 2.0 (Etalab), source INSEE. Counts are of active companies in the Sirene register stock dated 1 November 2026: commercial companies (SARL, SAS, SA and the like) and civil companies such as SCI property companies. Sole traders, associations and public bodies are not counted, and the register lists dormant holding and property companies as active, so a count is of companies on the register, not of trading businesses. A company is counted under its main activity (NAF rev. 2 code) and the commune of its head office; companies whose register entry holds no NAF rev. 2 code are in the totals only. "With employees" means the register holds an employee band of one or more. Industry titles are English renderings of the INSEE labels. Contains data from INSEE, reused under the Licence Ouverte 2.0. This page is not endorsed by INSEE. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.