Cell towers in Trappes (Yvelines)

Masts stand at Quartier Jean Mace, 3 Avenue Albert Einstein, 20/22 Rue Jean Jaures, 1 B avenue Albert Einstein, 9 Rue Denis Papin and 2 Avenue Carnot.

Most antennas sit on rooftops (14 of 20), so heights stay modest; the tallest support is 52 m at 1 B avenue Albert Einstein.

Systems from 1995 are still on the register. Bouygues Telecom opened 5G here in November 2020; SFR followed in December 2020, Free Mobile followed in December 2020. 2021 was the busiest year, with 32 new systems, most of them 5G.

Over the past 12 months ANFR recorded 22 new systems here. Approved additions not yet in service are pending on 5 existing masts, for example Bouygues Telecom (3G 900 MHz) at 25 avenue de l'Armee Leclerc, Orange (5G 700 MHz) at 7 rue Denis Papin and SFR (5G 2100 MHz) at 6 square Albert Camus. 15 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

6 supports carry only SFR.

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

Montigny-le-Bretonneux lies 1.5 km to the south-east and has 26 masts, more than here.

Among the 62 Yvelines towns with at least five masts, Trappes ranks 14th by mast count. With 20 masts for 34,689 residents, or 6 per 10,000, it has fewer masts per inhabitant than the median for those towns (7).

At 14 km² with 34,689 residents, the commune is dense enough that most antennas sit on rooftops rather than pylons. It is part of the CA de Saint Quentin en Yvelines intercommunal grouping.

Most of the town's 20 masts are buildings (14).

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