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Data / France companies / Yvelines / Montesson

Companies in Montesson, Yvelines: 1,464 active companies by industry

1,464 active companies have their head office in Montesson, Yvelines, in the Sirene register stock dated 1 November 2026. 85 were registered in the last 12 months, 9 of them in October 2026, and 275 have employees.

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  • 1,464Active companies
  • 85Registered in the last 12 months
  • 9Registered in October 2026
  • 275 (18.8%)With employees
  • YvelinesDepartment
  • 78418Commune 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 20269
September 20265
August 20264
July 20268
June 202610
May 20266
April 20265
March 20267
February 20268
January 20267
December 20258
November 20258

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
202267
202367
202489
202588
2026 so far69

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 declared1,18981.2%
1 to 9 employees23516.1%
10 to 49 employees352.4%
50 to 249 employees50.3%
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 estate68.20B414
Business and other management consultancy activities70.22Z120
Computer systems and software consultancy62.02A46
Activities of holding companies64.20Z36
Renting of housing68.20A30
Activities of head offices70.10Z28
Fund management activities66.30Z23
Construction of detached houses41.20A21
Engineering and technical consultancy71.12B21
Taxi operation49.32Z19
Fast-food restaurants56.10C18
Electrical installation in all premises43.21A17
General masonry and building shell work43.99C16
Computer programming activities62.01Z15
Painting and glazing43.34Z14
Traditional restaurants56.10A14
Real estate agencies68.31Z14
Sale of cars and light motor vehicles45.11Z13
Water and gas installation in all premises43.22A11
Maintenance and repair of light motor vehicles45.20A11
Buying and selling of own real estate68.10Z11
Hairdressing96.02A10
Non-specialised wholesale trade46.90Z9
Local road freight transport49.41B9
Advertising agencies73.11Z9
Short-term renting of cars and light motor vehicles77.11A9
Landscape service activities81.30Z9
Organisation of conventions and trade shows82.30Z9
Legal vehicles for development programmes41.10D8
Retail sale via mail order houses with general catalogue47.91A8
Growing of vegetables and melons, roots and tubers01.13Z7
Wood and PVC joinery installation43.32A7
Wholesale of other household goods46.49Z7
Retail sale of clothing in specialised stores47.71Z7
Combined office administrative service activities82.11Z7
Heating and air conditioning installation43.22B6
Wholesale of computers, computer peripheral equipment and software46.51Z6
Legal vehicles for securities portfolio management66.19A6
Legal vehicles for real estate portfolio management68.32B6
Accounting, bookkeeping and auditing activities; tax consultancy69.20Z6

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
SK 2 SARL1311308666 October 202696.04Zannuaire-entreprises.data.gouv.fr
Perfect Touch Concept1312867671 October 202696.02Bannuaire-entreprises.data.gouv.fr
Prestige Auto1304142121 October 202677.11Aannuaire-entreprises.data.gouv.fr
4CYON1303211361 October 202659.20Zannuaire-entreprises.data.gouv.fr
Ukemi13058207524 September 202685.51Zannuaire-entreprises.data.gouv.fr
Cplj Invest13052343421 September 202670.10Zannuaire-entreprises.data.gouv.fr
VC Water Consulting1096840017 September 2026annuaire-entreprises.data.gouv.fr
Abbari Conseil10927018128 August 202670.22Zannuaire-entreprises.data.gouv.fr
Immocasa10943991924 August 202668.10Zannuaire-entreprises.data.gouv.fr
Atout Nettoyage13140203419 August 202681.22Zannuaire-entreprises.data.gouv.fr
GJC Invest10911103931 July 202666.30Zannuaire-entreprises.data.gouv.fr
DJY HOLDING10807755323 July 202670.10Zannuaire-entreprises.data.gouv.fr

Updated November 7, 2026. Read from INSEE, base Sirene des entreprises et de leurs établissements, on 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.