CF15 broadband and area guide
Ofcom coverage, connection speeds, house prices and local data for 494 postcodes across 3 sectors in Cardiff.
Full fibre
0%
Gigabit
58%
Superfast
97%
Postcodes
494
Caerphilly's CF15 shows uneven gigabit rollout at 57.7% across 494 postcodes, with 38.7% in the 30 to 300 Mbps band and 31.2% relying on wireless.
Broadband speeds in CF15
Share of CF15 premises by the fastest download speed available, averaged across all 494 postcodes in the district.
Gigabit reaches only 57.7% of the 494 postcodes, the lowest across this cohort, indicating incomplete cable deployment across Caerphilly's outer fringe. Wireless networks support 31.2% of addresses, nearly a third, suggesting this district relies on wireless where traditional wired networks fall short. The critical detail is the 38.7% occupying the 30 to 300 Mbps band, the largest such segment across all 20 districts, reflecting limited gigabit availability. Below-10Mbps premises are rare at 0.3%, suggesting broadband access is nearly universal even where speed is limited. Superfast coverage reaches 97.2%, so most postcodes meet basic broadband thresholds. Overall, CF15 shows the weakest gigabit penetration but strong fallback options, typical of rural Caerphilly development zones.
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
0%
Premises unable to get the 10 Mbps universal service minimum
Fixed wireless
31%
Premises that can use a fixed wireless access service
Broadband by sector
CF15 splits into 3 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 |
|---|---|---|---|---|
| CF15 7 | 174 | 96% | 0% | 77% |
| CF15 8 | 166 | 99% | 0% | 74% |
| CF15 9 | 154 | 97% | 0% | 19% |
All CF15 7 postcodes (174)
All CF15 8 postcodes (166)
All CF15 9 postcodes (154)
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Living in Cardiff
CF15 represents Caerphilly's less-developed fringes, where speed diversity is pronounced. Postcodes with weak gigabit penetration typically indicate rural or remote 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
CF15 broadband FAQs
Why does CF15 struggle with gigabit at 57.7%?
Rural Caerphilly fringe areas lack cable gigabit investment. Fibre and wireless are the primary options.
Is wireless a reliable primary option?
31.2% of postcodes have it available. It bridges gaps where fibre networks are not deployed.
How many households get stuck at 30 to 300 Mbps?
38.7%, the highest tier across this batch. It's adequate for streaming and calls, but below gigabit standards.
Should remote workers avoid CF15?
Not necessarily. Two-thirds of postcodes have gigabit or wireless access. Check your postcode to confirm options.
Neighbouring districts
Check your exact postcode
Every postcode in CF15 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