In Seine-et-Marne (77), mobile operators run 2 127 sites, including 2 125 in 4G and 1 484 in 5G — 1.7% of France's 4G sites. ARCEP data, T1 2026. Relative to population, that is 145 sites per 100,000 inhabitants.

2 127
mobile sites

ARCEP · T1 2026

1 133
Sites 2G

sites

1 552
Sites 3G

sites

2 125
Sites 4G

sites

1 484
Sites 5G

sites

145
Sites per 100,000 inhabitants

Density relative to INSEE municipal population (via the Géo API).

1 468 108
Population

INSEE

Données mises à jour : T1 2026 (période). Source : ARCEP — Mon réseau mobile — sites fournissant un service mobile. Licence Ouverte Etalab 2.0.

Breakdown by generation

  • 2G1 133 mobile sites
  • 3G1 552 mobile sites
  • 4G2 125 mobile sites
  • 5G1 484 mobile sites

Count of sites providing a mobile service, per operator — source ARCEP 'Mon réseau mobile' (a metric distinct from ANFR authorised sites).

All departments

ParisYvelinesEssonneHauts-de-SeineSeine-Saint-DenisVal-de-MarneVal-d'Oise
← Mobile coverage in France: 2G, 3G, 4G and 5G sites