# Companies in Montesson: 1,464 active companies, page 3

Updated November 7, 2026.

Biggest industries, 81 to 120 of 199, in the same order as page 1.

## The full lists

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- [Companies in Montesson, Yvelines](https://specstream.ai/data/france-companies/town/montesson-78418): 649 rows, every active company the pages name, at any registration date, in the Sirene stock dated 1 November 2026, $32.45, or the new rows each week for $19 a month. Buy: https://specstream.ai/data/france-companies/town/montesson-78418
- [Companies in Yvelines, France](https://specstream.ai/data/france-companies/department/78-yvelines): 59,628 rows, every active company the pages name, at any registration date, in the Sirene stock dated 1 November 2026, $676.28, or the new rows each week for $19 a month. Buy: https://specstream.ai/data/france-companies/department/78-yvelines

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.

## Biggest industries, page 3

| Industry | NAF code | Active companies |
| --- | --- | --- |
| [Sports and recreation education](https://specstream.ai/data/france-companies/industry/85-51z-sports-and-recreation-education) | 85.51Z | 3 |
| [General medical practice activities](https://specstream.ai/data/france-companies/industry/86-21z-general-medical-practice-activities) | 86.21Z | 3 |
| [Other amusement and recreation activities](https://specstream.ai/data/france-companies/industry/93-29z-other-amusement-and-recreation-activities) | 93.29Z | 3 |
| [Plant propagation](https://specstream.ai/data/france-companies/industry/01-30z-plant-propagation) | 01.30Z | 2 |
| [Treatment and disposal of non-hazardous waste](https://specstream.ai/data/france-companies/industry/38-21z-treatment-and-disposal-of-non-hazardous-waste) | 38.21Z | 2 |
| [Other construction installation n.e.c.](https://specstream.ai/data/france-companies/industry/43-29b-other-construction-installation-n-e-c) | 43.29B | 2 |
| [Other building completion and finishing](https://specstream.ai/data/france-companies/industry/43-39z-other-building-completion-and-finishing) | 43.39Z | 2 |
| [Other specialised construction activities](https://specstream.ai/data/france-companies/industry/43-99d-other-specialised-construction-activities) | 43.99D | 2 |
| [Retail trade of motor vehicle parts and accessories](https://specstream.ai/data/france-companies/industry/45-32z-retail-trade-of-motor-vehicle-parts-and-accessories) | 45.32Z | 2 |
| [Sale, maintenance and repair of motorcycles](https://specstream.ai/data/france-companies/industry/45-40z-sale-maintenance-and-repair-of-motorcycles) | 45.40Z | 2 |
| [Agents specialised in the sale of other particular products](https://specstream.ai/data/france-companies/industry/46-18z-agents-specialised-in-the-sale-of-other-particular-products) | 46.18Z | 2 |
| [Wholesale of sanitary ware and decoration products](https://specstream.ai/data/france-companies/industry/46-73b-wholesale-of-sanitary-ware-and-decoration-products) | 46.73B | 2 |
| [General food stores](https://specstream.ai/data/france-companies/industry/47-11b-general-food-stores) | 47.11B | 2 |
| [Supermarkets](https://specstream.ai/data/france-companies/industry/47-11d-supermarkets) | 47.11D | 2 |
| [Other retail sale of food in specialised stores](https://specstream.ai/data/france-companies/industry/47-29z-other-retail-sale-of-food-in-specialised-stores) | 47.29Z | 2 |
| [Retail sale of electrical household appliances in specialised stores](https://specstream.ai/data/france-companies/industry/47-54z-retail-sale-of-electrical-household-appliances-in-specialised-stores) | 47.54Z | 2 |
| [Retail sale of other household equipment](https://specstream.ai/data/france-companies/industry/47-59b-retail-sale-of-other-household-equipment) | 47.59B | 2 |
| [Retail sale of newspapers and stationery in specialised stores](https://specstream.ai/data/france-companies/industry/47-62z-retail-sale-of-newspapers-and-stationery-in-specialised-stores) | 47.62Z | 2 |
| [Opticians](https://specstream.ai/data/france-companies/industry/47-78a-opticians) | 47.78A | 2 |
| [Retail sale of second-hand goods in stores](https://specstream.ai/data/france-companies/industry/47-79z-retail-sale-of-second-hand-goods-in-stores) | 47.79Z | 2 |
| [Holiday and other short-stay accommodation](https://specstream.ai/data/france-companies/industry/55-20z-holiday-and-other-short-stay-accommodation) | 55.20Z | 2 |
| [Other financial service activities, except insurance and pension funding, n.e.c.](https://specstream.ai/data/france-companies/industry/64-99z-other-financial-service-activities-except-insurance-and-pension-fundin) | 64.99Z | 2 |
| [Photographic activities](https://specstream.ai/data/france-companies/industry/74-20z-photographic-activities) | 74.20Z | 2 |
| [Construction economics activities](https://specstream.ai/data/france-companies/industry/74-90a-construction-economics-activities) | 74.90A | 2 |
| [Renting and leasing of construction and civil engineering machinery and equipment](https://specstream.ai/data/france-companies/industry/77-32z-renting-and-leasing-of-construction-and-civil-engineering-machinery-an) | 77.32Z | 2 |
| [Renting and leasing of other machinery, equipment and tangible goods n.e.c.](https://specstream.ai/data/france-companies/industry/77-39z-renting-and-leasing-of-other-machinery-equipment-and-tangible-goods-n) | 77.39Z | 2 |
| [Other building and industrial cleaning activities](https://specstream.ai/data/france-companies/industry/81-22z-other-building-and-industrial-cleaning-activities) | 81.22Z | 2 |
| [Disinfection, disinfestation and pest control](https://specstream.ai/data/france-companies/industry/81-29a-disinfection-disinfestation-and-pest-control) | 81.29A | 2 |
| [Photocopying, document preparation and other specialised office support activities](https://specstream.ai/data/france-companies/industry/82-19z-photocopying-document-preparation-and-other-specialised-office-support) | 82.19Z | 2 |
| [Rehabilitation, prosthetics and podiatry activities](https://specstream.ai/data/france-companies/industry/86-90e-rehabilitation-prosthetics-and-podiatry-activities) | 86.90E | 2 |
| [Other human health activities n.e.c.](https://specstream.ai/data/france-companies/industry/86-90f-other-human-health-activities-n-e-c) | 86.90F | 2 |
| [Support activities to performing arts](https://specstream.ai/data/france-companies/industry/90-02z-support-activities-to-performing-arts) | 90.02Z | 2 |
| [Activities of sports clubs](https://specstream.ai/data/france-companies/industry/93-12z-activities-of-sports-clubs) | 93.12Z | 2 |
| [Funeral and related activities](https://specstream.ai/data/france-companies/industry/96-03z-funeral-and-related-activities) | 96.03Z | 2 |
| [Growing of other non-perennial crops](https://specstream.ai/data/france-companies/industry/01-19z-growing-of-other-non-perennial-crops) | 01.19Z | 1 |
| [Support services to forestry](https://specstream.ai/data/france-companies/industry/02-40z-support-services-to-forestry) | 02.40Z | 1 |
| [Manufacture of beer](https://specstream.ai/data/france-companies/industry/11-05z-manufacture-of-beer) | 11.05Z | 1 |
| [Manufacture of footwear](https://specstream.ai/data/france-companies/industry/15-20z-manufacture-of-footwear) | 15.20Z | 1 |
| [Other printing](https://specstream.ai/data/france-companies/industry/18-12z-other-printing) | 18.12Z | 1 |
| [Pre-press activities](https://specstream.ai/data/france-companies/industry/18-13z-pre-press-activities) | 18.13Z | 1 |

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Source: [INSEE, base Sirene des entreprises et de leurs établissements, on data.gouv.fr](https://www.data.gouv.fr/datasets/base-sirene-des-entreprises-et-de-leurs-etablissements-siren-siret). 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](https://creativecommons.org/licenses/by/4.0/).