Cell towers in Chambly (Oise)

Declared supports include 1 water tower, with buildings making up most of the remainder.

Declared locations include Les Cornouillers, rue Emile Zola, Les Glaises, 14 Allee des Bouvreuils, Allee des Alouettes and 165 rue Pierre Curie.

Inventory: a 46 m water tower, at Les Cornouillers, for Bouygues Telecom, Free Mobile and SFR; a 24 m building, at rue Emile Zola, for Orange; a 50 m pylon, at Les Glaises, for Orange; a 17 m building, at 14 Allee des Bouvreuils, for Bouygues Telecom and SFR; a 17 m building, at Allee des Alouettes, for Free Mobile; a 30 m pylon, at 165 rue Pierre Curie, for Bouygues Telecom, Free Mobile, Orange and SFR.

ANFR lists a 50 m pylon at Les Glaises as the tallest structure. The median height of measured supports is 27 m.

2016 was the busiest year, with 19 new systems, most of them 4G. Free Mobile switched on the first 5G here in December 2020; Orange followed in May 2023, Bouygues Telecom followed in June 2023. The oldest transmitter still listed here goes back to 2002.

14 systems were switched on in the past 12 months. Approved additions not yet in service are pending on one existing mast, for example Bouygues Telecom (4G 2100 MHz) at 14 Allee des Bouvreuils and SFR (3G and 4G) at 14 Allee des Bouvreuils. 5 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

3.5 GHz 5G is declared by Free Mobile on all 3 masts, Bouygues Telecom on 2 of its 3 masts, Orange on 2 of its 3 masts and SFR on 2 of its 3 masts.

Nearby, Beaumont-sur-Oise (3.8 km to the south-east) has a higher 5G share (100%).

Of the 6 masts in the commune, only one mast carries all four networks.

By mast count, Chambly is 13th of the 16 Oise towns that have five or more.

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