Cell towers in Montrouge (Hauts-de-Seine)

2 supports are declared underground, in a gallery or a tunnel. For questions about exposure, see the exposure guide.

Declared supports include 2 underground or tunnel sites, with buildings making up most of the remainder.

Masts stand at Metro Mairie de Montrouge, Angle 37 rue Maurice Arnoux/ 84 rue Gabriel Péri, 139/143 Avenue Jean Jaures, Metro_verdun Sud_l4_, avenue de la République/Marx Dormoy and 155 Avenue Pierre Brossolette.

Over the past 12 months ANFR recorded 9 new systems here. ANFR has approved 2 new sites that are not live yet, plus additions on 5 existing masts. New: Bouygues Telecom (4G and 5G) at 53-55 boulevard Romain Rolland and Free Mobile (4G and 5G, including 5G at 3.5 GHz) at 19 avenue Jean Jaures. 14 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

Most antennas sit on rooftops (24 of 26), so heights stay modest; the tallest support is 49 m at avenue de la République/Marx Dormoy.

Systems from 1997 are still on the register. Local 5G started with Bouygues Telecom in November 2020; SFR followed in December 2020, Orange followed in December 2020. 2020 was the busiest year, with 38 new systems, most of them 5G.

8 supports carry only Free Mobile.

On 3.5 GHz, the fastest 5G band: Free Mobile on 7 of its 10 masts, SFR on 6 of its 7 masts, Bouygues Telecom on 5 of its 9 masts and Orange on 3 of its 5 masts.

1.1 km to the west, neighbouring Malakoff has only 19 masts.

At 2 km² with 46,324 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.

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