CF81 · Caerphilly

CF81 broadband and area guide

Ofcom coverage, connection speeds, house prices and local data for 384 postcodes across 2 sectors in Caerphilly.

Full fibre

0%

Gigabit

75%

Superfast

99%

Postcodes

384

CF81 delivers consistently fast broadband to 384 postcodes across Caerphilly, with gigabit available to three-quarters. The district has no below-USO postcodes.

Broadband speeds in CF81

Share of CF81 premises by the fastest download speed available, averaged across all 384 postcodes in the district.

Three-quarters of CF81 postcodes support gigabit speeds, while superfast broadband is near-universal at 98.5%. The speed tier distribution is clean: 75.2% exceed 300 Mbps, 23.4% occupy the 30 to 300 band, and only 0.3% fall below 10 Mbps. Zero postcodes sit below USO thresholds, indicating complete coverage from the infrastructure floor. Wireless presence is negligible at 0.1%. This is one of Caerphilly's strongest districts, with cable or modern fibre reaching almost every corner. The lack of need for wireless services suggests wireline networks dominate completely.

Under 2 Mbps
0%
2 to 5 Mbps
0%
5 to 10 Mbps
0%
10 to 30 Mbps
1%
30 to 300 Mbps
23%
300 Mbps and above
75%

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

<1%

Premises that can use a fixed wireless access service

Broadband by sector

CF81 splits into 2 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.

SectorPostcodesSuperfastFull fibreGigabit
CF81 8174100%0%85%
CF81 921098%0%67%
All CF81 8 postcodes (174)
All CF81 9 postcodes (210)
CF81 9AACF81 9ADCF81 9AECF81 9AFCF81 9AGCF81 9AHCF81 9AJCF81 9ALCF81 9ANCF81 9APCF81 9AUCF81 9AWCF81 9AXCF81 9AYCF81 9AZCF81 9BACF81 9BBCF81 9BDCF81 9BECF81 9BFCF81 9BGCF81 9BHCF81 9BJCF81 9BLCF81 9BNCF81 9BPCF81 9BQCF81 9BRCF81 9BSCF81 9BTCF81 9BUCF81 9BWCF81 9BXCF81 9BYCF81 9BZCF81 9DACF81 9DBCF81 9DDCF81 9DECF81 9DLCF81 9DNCF81 9DPCF81 9DQCF81 9DRCF81 9DSCF81 9DTCF81 9DUCF81 9DWCF81 9DXCF81 9DYCF81 9DZCF81 9EACF81 9EBCF81 9EDCF81 9EECF81 9EFCF81 9EGCF81 9EHCF81 9EJCF81 9ENCF81 9EPCF81 9EQCF81 9ERCF81 9ESCF81 9ETCF81 9EUCF81 9EWCF81 9EXCF81 9EYCF81 9EZCF81 9FACF81 9FBCF81 9FDCF81 9FECF81 9FFCF81 9FGCF81 9FHCF81 9FJCF81 9FLCF81 9FNCF81 9FPCF81 9FQCF81 9FRCF81 9FSCF81 9FTCF81 9FUCF81 9FWCF81 9FXCF81 9FYCF81 9FZCF81 9GACF81 9GBCF81 9GECF81 9GFCF81 9GGCF81 9GHCF81 9GJCF81 9GLCF81 9GPCF81 9GQCF81 9GRCF81 9GSCF81 9GTCF81 9GUCF81 9GWCF81 9GXCF81 9GYCF81 9GZCF81 9HACF81 9HBCF81 9HDCF81 9HECF81 9HFCF81 9HGCF81 9HSCF81 9HTCF81 9HUCF81 9HWCF81 9HXCF81 9HYCF81 9HZCF81 9JACF81 9JBCF81 9JDCF81 9JFCF81 9JGCF81 9JHCF81 9JJCF81 9JLCF81 9JNCF81 9JPCF81 9JQCF81 9JRCF81 9JSCF81 9JTCF81 9JUCF81 9JWCF81 9JXCF81 9JYCF81 9JZCF81 9LACF81 9LBCF81 9LDCF81 9LECF81 9LFCF81 9LGCF81 9LLCF81 9LNCF81 9LPCF81 9LQCF81 9LSCF81 9NBCF81 9NHCF81 9NJCF81 9NLCF81 9NNCF81 9NPCF81 9NRCF81 9NTCF81 9PACF81 9PDCF81 9PHCF81 9PJCF81 9PLCF81 9PNCF81 9PPCF81 9PQCF81 9PRCF81 9PSCF81 9PTCF81 9PUCF81 9PWCF81 9PXCF81 9PYCF81 9PZCF81 9QACF81 9QBCF81 9QDCF81 9QECF81 9QGCF81 9QHCF81 9QJCF81 9QLCF81 9QNCF81 9QPCF81 9QQCF81 9QRCF81 9QSCF81 9QTCF81 9QUCF81 9QWCF81 9QXCF81 9QYCF81 9QZCF81 9RACF81 9RBCF81 9RDCF81 9RECF81 9RFCF81 9RGCF81 9RHCF81 9RJCF81 9RLCF81 9RNCF81 9RPCF81 9RQCF81 9RRCF81 9RSCF81 9RTCF81 9RU

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Living in Caerphilly

Households can choose service based on preference rather than desperation. The 23% on mid-speed plans either prefer the lower cost or genuinely don't need gigabit for their use case. No digital divide here.

Remote worker score

55/100

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

CF81 broadband FAQs

Is CF81 one of Caerphilly's best-connected areas?

It sits high within the local district comparison. 75% gigabit availability and zero below-USO postcodes mark it as well-served, though Caerphilly's other codes vary in gigabit penetration.

What's the practical speed difference between gigabit and the 30 to 300 tier?

Real-world speeds in the gigabit tier often exceed 100 Mbps downloads, while the 30 to 300 band covers speeds that could be anywhere from 40 to 200 Mbps. Your actual speed depends on your plan, not just network availability.

Why is there almost no wireless here?

When cable and fibre networks are full, wireless services become unnecessary supplementary infrastructure. CF81's wireline footprint is dense enough that wireless doesn't need to fill gaps.

Are there any postcodes I should worry about?

Only 0.3% fall below 10 Mbps, so odds are overwhelming your address is well-served. If it isn't, a single check request is worth making.

Neighbouring districts

Check your exact postcode

Every postcode in CF81 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