CF99 postcode area guide — Cardiff
House prices, crime, broadband speeds, mobile signal, schools and demographics for the CF99 postcode district in Cardiff — every official dataset on one page.
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Where is CF99?
Broadband & internet speeds in CF99
Limited coverage
Superfast (30Mb+)
0%
Ultrafast (300Mb+)
0%
Gigabit-capable
0%
Below USO (10Mb)
0%
Broadband availability in the CF99 postcode district (Cardiff) is Limited — fixed broadband speeds are below the UK average here. Across the 1 postcodes Ofcom measures in CF99, superfast broadband (30 Mbit/s or faster) reaches 0% of premises and gigabit-capable lines are available to 0%.
Around 0% of premises in CF99 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 CF99
| Postcode | Superfast | Gigabit |
|---|---|---|
| CF99 1SN | 0% | 0% |
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):
4G indoors — all networks
98%
4G outdoors — all networks
99.8%
5G outdoors — all networks
96.7%
Voice indoors — all networks
98.9%
Signal varies street by street — use the mobile coverage checker to compare EE, O2, Three and Vodafone at an exact postcode.
Crime in CF99
Police recorded 324 incidents within about a mile of the centre of CF99 in May 2026 (latest published street-level data). The breakdown:
| Category | Incidents | Share |
|---|---|---|
| Violence & sexual offences | 84 | 25.9% |
| Anti-social behaviour | 50 | 15.4% |
| Public order | 47 | 14.5% |
| Shoplifting | 44 | 13.6% |
| Criminal damage & arson | 22 | 6.8% |
| Drugs | 17 | 5.2% |
| Vehicle crime | 17 | 5.2% |
| Other theft | 15 | 4.6% |
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).
Who lives here? Cardiff demographics
Census 2021 figures for the wider Cardiff district (362,308 residents, 147,333 households):
| Age profile | |
|---|---|
| Under 15 | 18.2% |
| 15–29 | 32.2% |
| 30–44 | 18.6% |
| 45–64 | 16.5% |
| 65+ | 14.5% |
| Housing tenure | |
|---|---|
| Owner-occupied | 58% |
| Private rented | 24.6% |
| Social rented | 8.4% |
Source: ONS Census 2021 (district level — the finest openly licensed cut we republish). © Crown copyright, OGL v3.0.
Schools in and around CF99
| School | Phase | Ages | Pupils | Postcode |
|---|---|---|---|---|
| Mount Stuart Primary | Not applicable | — | — | CF10 5BS |
| Ysgol Gynradd Gymraeg Hamadryad | Not applicable | — | — | CF10 5UY |
| St Cuthbert's R.C. Primary School | Not applicable | — | — | CF10 4AB |
| St Mary The Virgin C.I.W. Primary School | Not applicable | — | — | CF10 5HB |
| Grange Town Primary | Not applicable | — | — | CF11 7XS |
| Grangetown Nursery School | Not applicable | — | — | CF1 7DW |
| St Paul's C.I.W. Primary School | Not applicable | — | — | CF11 7EU |
| ACT Schools | Not applicable | — | — | CF24 5ET |
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 CF99
1 rated food businesses operate in CF99. 1 hold the top rating of 5, 0 are rated 4, and none are currently rated 2 or below.
Among the 5-rated: ESS Catering.
Source: Food Standards Agency, food hygiene ratings (FHRS) open data.
Phone area codes for Cardiff
Landlines around CF99 typically use:
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What's it like living in CF99?
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Moving to CF99? Sort your connectivity first
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Postcodes in CF99
Neighbouring districts
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Frequently asked questions
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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.