Cell towers in Dourdan (Essonne)

Most of the town's 9 masts are pylons (4); 2 water towers make up the rest of the mix.

Antennas are listed at Les Champs Noël, Carrefour du Rendez-Vous, Les Pierres Aigues, L Ermitage, Chem de l'Epine Blanche and 7 Place de l'Etang du Roy.

3 masts belong to the commune itself and 1 to TDF; the rest sit mainly on private buildings.

Systems from 1997 are still on the register. Free Mobile switched on the first 5G here in December 2020; Orange followed in March 2022, SFR followed in September 2022. 2022 was the busiest year, with 18 new systems, most of them 5G.

Approved additions not yet in service are pending on 4 existing masts, for example Bouygues Telecom (4G) at Les Champs Noël, Free Mobile (5G 700 MHz) at 7 Rue Lambert and Free Mobile (5G 700 MHz) at 7 Place de l'Etang du Roy. 5 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

ANFR lists a 59 m water tower at Les Champs Noël as the tallest structure. The median is 31 m, above the Essonne median of 26 m.

Only one mast carries all four networks; 3 supports carry only Free Mobile.

On 3.5 GHz, the fastest 5G band: Free Mobile on all 5 masts, Orange on 3 of its 4 masts, Bouygues Telecom on 2 of its 3 masts and SFR on 2 of its 3 masts.

The widest declared gap between neighbouring supports is about 3.9 km, to the north-west of the centre.

Breuillet lies 13 km to the east and has only 6 masts.

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