CF5 postcode area guide — Cardiff

Where is CF5?

Broadband & internet speeds in CF5

Excellent coverage

Broadband availability in the CF5 postcode district (Cardiff) is Excellent — gigabit-capable full fibre is widely available. Across the 1,427 postcodes Ofcom measures in CF5, superfast broadband (30 Mbit/s or faster) reaches 98.5% of premises and gigabit-capable lines are available to 87.5%.

Around 0% of premises in CF5 fall below the Universal Service Obligation (a minimum of 10 Mbit/s download and 1 Mbit/s upload), so the overwhelming majority of homes and businesses here can already order a decent fixed line. For a business that depends on its connection, the figures that matter most are gigabit and full-fibre availability — the symmetric, low-contention services we quote leased lines and FTTP against.

Sample postcodes in CF5

Run a speed test to see what you're actually getting, or check your exact postcode.

Mobile signal around Cardiff

Ofcom's coverage model for the wider Cardiff district (173,267 premises):

Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.

Crime in CF5

Police recorded 412 incidents within about a mile of the centre of CF5 in May 2026 (latest published street-level data). The breakdown:

Raw counts favour busy town centres — a high street with shops and nightlife records more incidents than a residential cul-de-sac. Source: police.uk open data (point sample around the district centroid).

House prices in CF5

Based on 697 sales registered with HM Land Registry in the last 12 months, the median sold price in CF5 is £282,000, up 4.4% on the previous year (£270,000).

Latest recorded sales in CF5

Contains HM Land Registry data © Crown copyright and database right 2026, licensed under the Open Government Licence v3.0.

Who lives here? Cardiff demographics

Census 2021 figures for the wider Cardiff district (362,308 residents, 147,333 households):

Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.

Schools in and around CF5

Source: DfE Get Information about Schools (England & Wales). Check Ofsted report cards for inspection detail — headline one-word grades were retired in 2024.

Food hygiene ratings in CF5

397 rated food businesses operate in CF5. 242 hold the top rating of 5, 75 are rated 4, and 13 are rated 2 or below.

Among the 5-rated: 3S Convenience Store, 4th Glamorgan Home Guard Club, A & K Rees Family Butchers, ABSORB, Acorns Llandaff.

Source: Food Standards Agency, food hygiene ratings (FHRS) open data.

Energy performance (EPC) in CF5

From a sample of 305 Energy Performance Certificates across 10 CF5 postcodes, the most common rating is band D (average band D). 38% of sampled homes are rated C or better.

Source: MHCLG Energy Performance of Buildings Data (England & Wales), sampled at postcode level and refreshed monthly. Individual certificates are on each postcode’s page.

Phone area codes for Cardiff

Landlines around CF5 typically use:

Had a call from an unknown number? Use our free UK phone number checker to see who called.

What's it like living in CF5?

Postcodes in CF5

Neighbouring districts

All Cardiff (CF) postcode districts ›

Frequently asked questions

Sources: HM Land Registry Price Paid Data, police.uk street-level crime, Ofcom Connected Nations, ONS Census 2021, DfE Get Information about Schools, Food Standards Agency FHRS — all © Crown copyright, licensed under the Open Government Licence v3.0. Figures are area aggregates; individual addresses vary. Energy performance (EPC) data will be added when our Open Data Communities registration is approved.