Broadband & Mobile Availability for Carmarthenshire
Official Broadband and Mobile Statistics for 2024
With 59.3% Ultrafast (Full Fibre) access, Carmarthenshire is rather behind the 70% national average (Sep 2025), indicating a slower pace of infrastructure upgrade. 5G availability remains limited at 41.7%, representing a shortfall compared to the 62% national figure (Sep 2025).
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Broadband Network Coverage for Carmarthenshire
| Broadband Type | Availability | Avg Download Speed | Avg Upload Speed |
|---|---|---|---|
Ultrafast (Above 300 Mbit/s) | 59.3% | 1018 Mbps | 115 Mbps |
Superfast (Below 100 Mbit/s) | 31.7% | 64 Mbps | 15.5 Mbps |
Standard (Below 30 Mbit/s) | 8.5% | 18.7 Mbps | 2 Mbps |
Below USO (Below 10 Mbit/s) | 4.2% | 5.6 Mbps | 1 Mbps |
Source: Ofcom Connected Nations data, (July 2024). Some data may be overlapping or lacking accuracy
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Mobile Network Coverage & Non-Spots
Future-Ready Signal
20.3% below UK average
This shows the percentage of land area covered by at least one 5G network. The score of 41.7% is significantly below the national average (62%), indicating limited 5G investment to date.
Reliable 4G Coverage
19.9% below UK average
This critical score shows the percentage of Carmarthenshire's land area where all four major networks provide a dependable 4G signal. At 76.08%, there are notable mobile ‘not-spot‘ coverage gaps.
Basic 3G Safety Net
82.0% below UK average
This indicates the reliability of the basic signal across the entire region (as of July 2024). At 17.1%, the safety net for basic calls shows some gaps.
- 3G is being phased out by most operators, making its coverage minimal and its use declining. Presence seems to be limited in rural areas.
- Coverage varies significantly, with rural areas having much lower 4G and 5G availability than urban areas.
- The percentage of 5G connections is growing rapidly, while the percentage of 4G connections is decreasing and overtaken more often.