Cell towers in Viroflay (Yvelines)

Declared locations include avenue de Vélizy, 114 avenue du Général Leclerc, 2 rue de l'Abbe Dalloz and rue Raphael Corby.

Inventory: a 46 m pylon, at avenue de Vélizy, for Bouygues Telecom, Free Mobile, Orange and SFR; a 29 m building, at 114 avenue du Général Leclerc, for SFR; a 32 m building, at 2 rue de l'Abbe Dalloz, for Bouygues Telecom; a 15 m building, at rue Raphael Corby, for Orange and SFR; a 26 m building, for SFR.

The highest support stands 46 m at avenue de Vélizy (pylon). The median is 29 m, above the Yvelines median of 25 m.

2015 was the busiest year, with 11 new systems, most of them 3G. Bouygues Telecom opened 5G here in November 2020; Free Mobile followed in December 2020, Orange followed in April 2021. The oldest transmitter still listed here goes back to 1996.

Approved additions not yet in service are pending on 3 existing masts, for example Orange (4G 700 MHz) at rue Raphael Corby, SFR (5G 2100 MHz) at avenue de Vélizy and SFR (5G 2100 MHz) at 114 avenue du Général Leclerc. 4 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

By mast count, Viroflay is 62nd of the 62 Yvelines towns that have five or more. With 5 masts for 17,237 residents, or 3 per 10,000, it has fewer masts per inhabitant than the median for those towns (7).

3.5 GHz 5G is declared by SFR on all 4 masts, Bouygues Telecom on all 2 masts, Free Mobile on its only mast and Orange on 1 of its 2 masts.

Chaville lies 2 km to the east and has 16 masts, more than here.

Of the 5 masts in the commune, only one mast carries all four networks.

Most declared azimuths point outward, along a corridor or valley rather than at the centre.

At 3 km² with 17,237 residents, the commune is dense enough that most antennas sit on rooftops rather than pylons.

Supports split between 4 buildings and 1 pylon.

Source: operator declarations to ANFR, as of October 2026. Projects that are only approved are left out of the totals.