Cell towers in Belfort (Territoire de Belfort)

Most of the town's 18 masts are buildings (15); 2 churches or religious buildings make up the rest of the mix.

Declared locations include avenue de la Miotte, Technopôle de Belfort, 19-21 Avenue Thomas Woodrow Wilson, 1 rue Louis Braille - HLM le Madrid, rue P.bonnet and 46 rue du Ltd Colonel A Parent.

22 systems were switched on in the past 12 months. ANFR has approved one new site that is not live yet, plus additions on one existing mast. New: Orange (4G and 5G, including 5G at 3.5 GHz) at 3 Rue Maurice Louis Ducs de Broglie. 12 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

2021 was the busiest year, with 50 new systems, most of them 5G. Free Mobile switched on the first 5G here in December 2020; SFR followed in August 2021, Bouygues Telecom followed in August 2021. The oldest transmitter still listed here goes back to 1996.

15 of the 18 masts are rooftop-mounted. The tallest support is 75 m at 46 rue du Ltd Colonel A Parent (building). The median height of measured supports is 38 m.

Of the 18 masts in the commune, only one mast carries all four networks, and Orange is the only carrier on 6 masts.

Supports leave a gap of about 2.3 km to the north-west of the centre. Most declared azimuths point outward, along a corridor or valley rather than at the centre.

3.5 GHz 5G is declared by Orange on 11 of its 12 masts, Free Mobile on 7 of its 8 masts, Bouygues Telecom on 6 of its 7 masts and SFR on 6 of its 7 masts.

20 km to the south, neighbouring Valentigney has only 11 masts.

At 17 km² with 45,912 residents, the commune is dense enough that most antennas sit on rooftops rather than pylons. It is part of the CA Grand Belfort intercommunal grouping.

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