Cell towers in Groslay
Groslay has 1,892 known cell sites. The densest carrier is Bouygues Telecom with 599.
Nearest sites
| Operator | Generation | Distance | Bearing | Source |
|---|---|---|---|---|
| Bouygues Telecom | LTE · 3 sectors | 186 m | 323° NW | Verified |
| Bouygues Telecom | LTE · 3 sectors | 186 m | 323° NW | Verified |
| Bouygues Telecom | LTE · 3 sectors | 186 m | 323° NW | Verified |
| Orange | LTE · 3 sectors | 186 m | 323° NW | Verified |
| Orange | GSM · 3 sectors | 186 m | 323° NW | Verified |
| Orange | LTE · 3 sectors | 186 m | 323° NW | Verified |
| Orange | UMTS · 3 sectors | 186 m | 323° NW | Verified |
| Orange | UMTS · 3 sectors | 186 m | 323° NW | Verified |
| Bouygues Telecom | LTE · 3 sectors | 186 m | 323° NW | Verified |
| Orange | LTE · 3 sectors | 186 m | 323° NW | Verified |
Map
Carrier breakdown
| Operator | Sites | Share |
|---|---|---|
| Bouygues Telecom | 599 | 31.7% |
| Free Mobile | 471 | 24.9% |
| SFR | 430 | 22.7% |
| Orange | 392 | 20.7% |
This page lists the known cell sites in Groslay in Île-de-France, France. Positions come from ANFR, the regulator — these are surveyed, verified locations, not estimates.
Density here is about 32.1 sites per km², above the national average for this type of area (4.7/km²).
Altogether these sites report 5,539 sectors, averaging about 2.9 sectors per site.
99.4% of these sites report more than one sector, pointing to multi-directional antennas rather than omnidirectional coverage.
21.8% of known sites report 5G, above the national figure of 16.2%.
All 1,892 known sites here come from a regulator-verified source (ANFR).
The most common frequency bands here are 900, 2100, 700 MHz, out of 7 distinct bands reported in total.
The nearest known site to the centre of Groslay is 186 m away, run by Bouygues Telecom.
4 operators are known here. Ranked by site count: Bouygues Telecom (599, 31.7%), Free Mobile (471, 24.9%), SFR (430, 22.7%), Orange (392, 20.7%).
Bouygues Telecom leads with 31.7% of known sites, 6.8 percentage points ahead of second-placed Free Mobile.
By network generation: 61.6% 4G LTE, 21.8% 5G, 9.9% 3G UMTS, 6.7% 2G GSM.
83.4% of sites here run LTE (4G) or newer technology.
ANFR's data here was last refreshed in September 2026.
Frequently asked questions
- How many cell towers are in Groslay?
- 1,892 known cell sites are mapped in Groslay, from ANFR's verified data.
- Which carrier has the most sites in Groslay?
- Bouygues Telecom, with 599 sites (31.7% of the known total).
- Is there 5G in Groslay?
- 21.8% of known sites in Groslay report 5G, based on the latest observations.
- Are these positions accurate?
- Largely, yes — these come from ANFR's own regulator survey, not a community estimate, though positions can still lag real-world changes until the next update. See /data-sources for the source and licence per country.
Nearest known site is close — a booster may help
A signal booster amplifies an existing signal; it can't create one from nothing. With a known site this close, one of these is worth considering.
weBoost
Home and vehicle cell signal boosters, carrier-agnostic.
See productSureCall
Signal boosters sized by square footage, DIY install.
See productCel-Fi
Carrier-specific boosters, higher gain for a single network.
See product
Nearby places
- Cell towers in Montmorency (413 m)
- Cell towers in Montmagny (1.4 km)
- Cell towers in Deuil-la-Barre (1.8 km)
- Cell towers in Saint-Brice-sous-Foret (1.8 km)
- Cell towers in Pierrefitte-sur-Seine (2.3 km)
- Cell towers in Sarcelles (2.6 km)
- Cell towers in Villetaneuse (3.1 km)
- Cell towers in Enghien-les-Bains (3.1 km)
- Cell towers in Soisy-sous-Montmorency (3.4 km)
- Cell towers in Margency (3.8 km)
- Cell towers in Garges-les-Gonesse (4.2 km)
- Cell towers in Andilly (4.2 km)
- Cell towers in Epinay-sur-Seine (4.3 km)
- Cell towers in Villiers-le-Bel (4.5 km)
- Cell towers in Saint-Gratien (4.6 km)
- Cell towers in Ecouen (4.7 km)
- Cell towers in Stains (4.8 km)
- Cell towers in Eaubonne (4.9 km)
- Cell towers in Domont (4.9 km)
- Cell towers in Ezanville (4.9 km)
- Cell towers in Montlignon (5 km)
- Cell towers in Arnouville (5.1 km)
- Cell towers in L'Ile-Saint-Denis (5.5 km)
- Cell towers in Saint-Denis (5.6 km)
Data source: ANFR — Licence Ouverte 2.0. See all sources.