CF37 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 866 postcodes across 6 sectors in Rhondda Cynon Taf.
Full fibre
0%
Gigabit
51%
Superfast
94%
Postcodes
866
CF37 spans 866 postcodes across Caerphilly, the largest in this batch. Wireless infrastructure plays an outsized role in reaching ultrafast speeds, accounting for half of gigabit availability.
Broadband speeds in CF37
Share of CF37 premises by the fastest download speed available, averaged across all 866 postcodes in the district.
Superfast reaches 94.2%, but gigabit falls to 51.1%. Wireless technology delivers half (50.3%) of that gigabit capacity, a significant skew compared to neighbouring postcodes. The middle bracket swells to 39.5%, meaning two in five postcodes plateau at 30-300 Mbps despite superfast coverage. Only 0.5% fall below 10 Mbps. For households requiring gigabit, CF37 is a mixed prospect: available in about half, but access depends substantially on wireless networks rather than wired fibre or cable. This postcode shows how network geography diverges. Where some CF postcodes are entirely wired gigabit, CF37's wireless-heavy profile suggests terrain constraints or later-stage deployment of ultrafast access.
Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.
Connectivity in detail
Below 10 Mbps USO
<1%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
50%
Premises that can use a fixed wireless access service
Broadband by sector
CF37 splits into 6 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.
| Sector | Postcodes | Superfast | Full fibre | Gigabit |
|---|---|---|---|---|
| CF37 1 | 218 | 95% | 0% | 63% |
| CF37 2 | 150 | 94% | 0% | 39% |
| CF37 3 | 139 | 92% | TBC | <1% |
| CF37 4 | 168 | 92% | 0% | 55% |
| CF37 5 | 190 | 97% | 0% | 81% |
| CF37 9 | 1 | 100% | TBC | 0% |
All CF37 1 postcodes (218)
All CF37 2 postcodes (150)
All CF37 3 postcodes (139)
All CF37 4 postcodes (168)
All CF37 5 postcodes (190)
All CF37 9 postcodes (1)
Best deals
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Living in Rhondda Cynon Taf
Many households will find reliable superfast broadband. Those betting on gigabit should verify their specific postcode, as availability splits sharply between wireless-dependent and fixed-line areas.
Remote worker score
54/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Value score
50/100
What you get for the local price level
CF37 broadband FAQs
How much of CF37's gigabit depends on wireless links?
Exactly half (50.3%) of gigabit-capable postcodes rely on wireless infrastructure, making it critical to the ultrafast picture here.
What if I don't get gigabit in CF37?
39.5% of postcodes sit in the 30-300 Mbps range, well clear of the universal service obligation.
Is CF37 the largest postcode cluster in this batch?
Yes, with 866 postcodes it is the most populous district shown.
What percentage of CF37 is superfast-capable?
94.2% of postcodes deliver superfast speeds or better.
Neighbouring districts
Check your exact postcode
Every postcode in CF37 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.
Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources