Cell towers in Argenteuil (Val-d'Oise)

Declared locations include A15/Vachon/les Deserts, Le Vaucelle, 1 Cité Joliot Curie, 4 rue du Bordelais/rue de Rennes, 1/5 rue du Coudray and 4 Rue de la Grande Ceinture.

21 systems were switched on in the past 12 months. ANFR has approved 2 new sites that are not live yet, plus additions on 12 existing masts. New: Bouygues Telecom (4G and 5G) at 11 rue de la Grande Voie and Free Mobile (4G and 5G, including 5G at 3.5 GHz) at 4/14 Allée Soulezard. 50 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

2021 was the busiest year, with 91 new systems, most of them 5G. Bouygues Telecom switched on the first 5G here in November 2020; SFR followed in December 2020, Free Mobile followed in December 2020. The oldest transmitter still listed here goes back to 1996.

50 of the 60 masts are rooftop-mounted. The tallest support is 59 m at 1 -3 Allee Guy de Maupassant (building). The median height of measured supports is 24 m.

By mast count, Argenteuil is 1st of the 43 Val-d'Oise towns that have five or more.

3.5 GHz 5G is declared by Bouygues Telecom on 23 of its 29 masts, Free Mobile on 18 of its 19 masts, Orange on 16 of its 18 masts and SFR on 15 of its 20 masts.

2.1 km to the north, neighbouring Sannois has only 16 masts.

Of the 60 masts in the commune, only one mast carries all four networks.

At 17 km² with 106,130 residents, the commune is dense enough that most antennas sit on rooftops rather than pylons. It is part of the Métropole du Grand Paris intercommunal grouping.

50 buildings and 10 pylons carry the commune's antennas.

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