Cell towers in Elancourt (Yvelines)

Place names on the register include Route du Mesnil - D58, 1 place Mendès France, 34 Route de Trappes, 65b avenue George Politzer, Butte de la Revanche and Rue du Fond des Roches.

ANFR has approved one new site that is not live yet, plus additions on 2 existing masts. New: SFR (3G, 4G and 5G, including 5G at 3.5 GHz) at 2 Rue Alain Colas. 12 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

ANFR lists a 56 m pylon at Butte de la Revanche as the tallest structure. The median height of measured supports is 27 m.

The commune owns 2 of the 21 masts, Totem owns 2.

2021 was the busiest year, with 46 new systems, most of them 5G. Bouygues Telecom opened 5G here in November 2020; Free Mobile followed in March 2021, Orange followed in October 2021. The oldest transmitter still listed here goes back to 1998.

3.5 GHz 5G is declared by Free Mobile on all 9 masts, SFR on 7 of its 9 masts, Bouygues Telecom on all 6 masts and Orange on all 6 masts.

Nearby, La Verriere (3.6 km to the south) has only 6 masts.

Of the 21 masts in the commune, only one mast carries all four networks, and Free Mobile is the only carrier on 6 masts.

By mast count, Elancourt is 11th of the 62 Yvelines towns that have five or more. With 21 masts for 26,365 residents, or 8 per 10,000, it has more masts per inhabitant than the median for those towns (7).

Most of the town's 21 masts are pylons (10).

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