Broadband in Caerphilly
Coverage, speeds and prices for 4,274 postcodes across 15 postcode districts. Real data from Ofcom, Land Registry and Police.uk.
Superfast
97%
Full fibre
0%
Gigabit
82%
Postcodes
4,274
Superfast coverage in Caerphilly runs at 97.4% of postcodes, in step with the UK norm. The district spans 4,274 postcodes over 15 outward codes across the NP and CF ranges.
Browse Caerphilly by postcode district
Caerphilly covers 15 postcode districts with 4,274 postcodes in total. Coverage varies district by district, so pick yours for a full breakdown.
CF14
1 postcodes
100% superfast
0% full fibre
CF15
5 postcodes
23% superfast
0% full fibre
CF3
4 postcodes
92% superfast
0% full fibre
CF37
2 postcodes
36% superfast
CF46
95 postcodes
95% superfast
0% full fibre
CF48
3 postcodes
92% superfast
0% full fibre
CF81
384 postcodes
99% superfast
0% full fibre
CF82
458 postcodes
98% superfast
0% full fibre
CF83
1,184 postcodes
98% superfast
0% full fibre
NP10
16 postcodes
94% superfast
0% full fibre
NP11
873 postcodes
97% superfast
0% full fibre
NP12
896 postcodes
97% superfast
0% full fibre
NP13
23 postcodes
98% superfast
0% full fibre
NP22
184 postcodes
98% superfast
NP24
146 postcodes
96% superfast
Broadband speeds in Caerphilly
Share of premises by the fastest download speed available, averaged across every Caerphilly postcode.
Gigabit-capable coverage is the number to weigh here. It stands at 81.5% of postcodes, which points to substantial cable network reach but also leaves nearly one in five postcodes without a top-tier option. Superfast tells a steadier story at 97.4%, essentially the national norm, so the everyday baseline is solid almost everywhere. Slow connections are uncommon. Just 0.5% of postcodes fall below 10 Mbps, around one in 200. The gap worth understanding is between the two coverage figures: an address can clear the superfast bar comfortably yet still have no route to gigabit speeds, and with 15 outward codes in the mix that difference will fall unevenly. For most households the deciding factor is what the specific postcode supports rather than the district average.
Source: Ofcom Connected Nations. Percentages are averages of postcode-level availability, so rows may not sum to exactly 100%.
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Caerphilly at a glance
A household that needs dependable video calls and streaming will nearly always be served, given the 97.4% superfast figure. The question mark hangs over heavy users. Roughly 18.5% of postcodes have no gigabit option, so anyone planning very large downloads or sustained high-bandwidth work should look closely at their exact location. The 0.5% below 10 Mbps means outright slow spots are rare.
Remote worker score
54/100
Connectivity and amenities for home working
Family score
50/100
Schools, safety and family amenities
Caerphilly broadband FAQs
What share of Caerphilly lacks gigabit broadband?
Roughly 18.5% of postcodes, close to one in five. The remaining 81.5% can order a gigabit-capable service.
Is Caerphilly's superfast coverage typical for the UK?
Yes. At 97.4% it sits right on the national norm of about 97 per cent.
How many outward codes serve Caerphilly?
15, spanning the NP and CF ranges and 4,274 postcodes in total.
Are below-10 Mbps postcodes common in Caerphilly?
No. They make up 0.5% of the total, about one in 200.
Why do Caerphilly's superfast and gigabit figures differ so much?
They measure different things. Superfast counts a much lower speed threshold, while gigabit needs a network capable of far higher speeds, and nearly one in five postcodes here clears the first bar without the second.
Check your exact postcode
Every postcode in Caerphilly 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