Cell towers in Velizy-Villacoublay (Yvelines)

Most of the town's 23 masts are buildings (19); 1 bridge or viaduct make up the rest of the mix.

Antennas are listed at Autoroute A86, 2 Avenue de l'Europe, 4-6 rue de la Division Leclerc, 20 Rue Grange Dame Rose (thales Provisoire), 21-25 rue Rolland Garros and 1 rue Jean-Pierre Peugeot.

Systems from 1996 are still on the register. Bouygues Telecom switched on the first 5G here in November 2020; SFR followed in December 2020, Free Mobile followed in December 2020. 2020 was the busiest year, with 33 new systems, most of them 5G.

Approved additions not yet in service are pending on 5 existing masts, for example Bouygues Telecom (3G and 4G) at 2 avenue de l'Europe (velizy 2), Free Mobile (4G 2100 MHz) at Ech N118 Sud Vers A86 Pr7.6 and Orange (5G 2100 MHz) at 11 Place de l'Europe. 19 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

Most antennas sit on rooftops (19 of 23), so heights stay modest; the tallest support is 37 m at 1 rue Jean-Pierre Peugeot.

On 3.5 GHz, the fastest 5G band: Bouygues Telecom on 9 of its 11 masts, Free Mobile on 8 of its 9 masts, SFR on 5 of its 7 masts and Orange on 4 of its 6 masts.

2.7 km to the north, neighbouring Chaville has only 16 masts.

6 supports carry only Bouygues Telecom.

Among the 62 Yvelines towns with at least five masts, Velizy-Villacoublay ranks 10th by mast count. With 23 masts for 23,011 residents, or 10 per 10,000, it has more masts per inhabitant than the median for those towns (7).

At 9 km² with 23,011 residents, the commune is dense enough that most antennas sit on rooftops rather than pylons. It is part of the CA Versailles Grand Parc (CAVGP) intercommunal grouping.

Figures above cover installations declared to ANFR as in service or technically operational, as of October 2026; approved projects are not counted.