Cell towers in Oissel-sur-Seine

Most of the town's 14 masts are pylons (8); 1 church or religious building and 1 water tower make up the rest of the mix.

Declared locations include Forêt de la Londe Rouvray, 355 Av. Anderten, Mare Cornu, Stade Municipal Marcel Billard, La Mare Cornue and Stade Marcel Billard.

ANFR lists a 48 m pylon at La Mare Cornue as the tallest structure. The median is 33 m, above the Seine-Maritime median of 27 m.

2019 was the busiest year, with 27 new systems, most of them 4G. Bouygues Telecom opened 5G here in November 2020; Free Mobile followed in December 2020, Orange followed in April 2022. The oldest transmitter still listed here goes back to 2005.

12 systems were switched on in the past 12 months. Approved additions not yet in service are pending on 5 existing masts, for example Bouygues Telecom (4G and 5G) at Mare Cornu, Bouygues Telecom (4G and 5G) at 12 Rue Petite de Rouen and Orange (5G 700 MHz) at La Mare Cornue. 7 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 5 of its 6 masts, Orange on 4 of its 5 masts, Bouygues Telecom on 3 of its 5 masts and SFR on 2 of its 5 masts.

Supports leave a gap of about 2 km to the west of the centre.

Nearby, Saint-Etienne-du-Rouvray (5 km to the north) has 25 masts, more than here.

12,317 residents over 22 km²: supports are mostly pylons, not rooftops. It is part of the Métropole Rouen Normandie intercommunal grouping.

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