CF23
Postcode districtPostcode district covering Cardiff, Cyncoed and Pen-y-lan, in Cardiff.
Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an CF23 postcode. How census figures are added up
Gigabit coverage by postcode district
Connected Nations (Ofcom) · January 2026
In CF23, 95.9% of homes and businesses could get gigabit-capable broadband in January 2026.
How CF23 compares
Each dot is a postcode district. The black line marks the middle one.
Is CF23 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in CF23 at a rate of 63.7 per 1,000 people.
That compares with 96.0 per 1,000 people across the CF postcode area.
In August 2026 alone, 355 cases of crime and anti-social behaviour were recorded in CF23.
In the 12 months to August 2026, the most common types were violence and sexual offences (1,039), other crime (683) and anti-social behaviour (371).
A year earlier, the recorded crime rate in CF23 was 70.6 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.
Deprivation in CF23, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so CF23 has no single figure. Of its 29 neighbourhoods with a rank:
- Decile 1 (Wales’s most deprived 10%): 3 neighbourhoods
- Decile 3: 2 neighbourhoods
- Decile 4: 1 neighbourhood
- Decile 5: 1 neighbourhood
- Decile 6: 5 neighbourhoods
- Decile 7: 1 neighbourhood
- Decile 8: 2 neighbourhoods
- Decile 9: 4 neighbourhoods
- Decile 10 (Wales’s least deprived 10%): 10 neighbourhoods
Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.
Neighbourhoods in CF23
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Cardiff 003A | 1,914 | 54.1 per 1,000 | 9 | 98.5% |
| Cardiff 003B | 1,787 | 85.4 per 1,000 | 10 | 82.1% |
| Cardiff 003D | 1,886 | 47.4 per 1,000 | 8 | 97.9% |
| Cardiff 003G | 1,547 | 45.0 per 1,000 | 10 | 99.8% |
| Cardiff 008A | 1,535 | 26.3 per 1,000 | 10 | 95.9% |
| Cardiff 008C | 1,491 | 36.3 per 1,000 | 10 | 92.9% |
| Cardiff 008D | 1,384 | 60.3 per 1,000 | 7 | 100.0% |
| Cardiff 009A | 1,583 | 170.0 per 1,000 | 1 | 96.9% |
| Cardiff 009B | 2,778 | 62.5 per 1,000 | 3 | 88.8% |
| Cardiff 009C | 1,375 | 26.8 per 1,000 | 6 | 100.0% |
| Cardiff 009D | 1,580 | 43.7 per 1,000 | 4 | 97.4% |
| Cardiff 017A | 1,218 | 34.3 per 1,000 | 6 | 99.8% |
| Cardiff 017B | 1,729 | 94.4 per 1,000 | 1 | 97.8% |
| Cardiff 017C | 1,278 | 41.3 per 1,000 | 3 | 99.6% |
| Cardiff 017D | 1,833 | 101.6 per 1,000 | 1 | 94.1% |
| Cardiff 017E | 1,441 | 75.5 per 1,000 | 6 | 97.7% |
| Cardiff 019A | 1,738 | 38.6 per 1,000 | 10 | 97.8% |
| Cardiff 019B | 1,501 | 72.8 per 1,000 | 9 | 96.5% |
| Cardiff 019C | 1,602 | 21.8 per 1,000 | 10 | 99.7% |
| Cardiff 019D | 2,042 | 43.0 per 1,000 | 10 | 98.5% |
| Cardiff 024A | 1,712 | 27.3 per 1,000 | 9 | 96.2% |
| Cardiff 024B | 1,370 | 57.7 per 1,000 | 10 | 96.0% |
| Cardiff 024C | 1,643 | 20.3 per 1,000 | 10 | 99.7% |
| Cardiff 024D | 1,513 | 46.0 per 1,000 | 10 | 99.9% |
| Cardiff 029A | 1,864 | 151.3 per 1,000 | 8 | 95.8% |
| Cardiff 029B | 1,280 | 48.3 per 1,000 | 9 | 100.0% |
| Cardiff 029C | 1,548 | 65.4 per 1,000 | 6 | 99.6% |
| Cardiff 029D | 1,981 | 222.0 per 1,000 | 5 | 92.0% |
| Cardiff 030B | 1,328 | 100.4 per 1,000 | 6 | 99.7% |
MPs for CF23
- Jo StevensLabourMP for Cardiff East84% of CF23’s postcodes
- Anna McMorrinLabourMP for Cardiff North16% of CF23’s postcodes
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Middle areas in CF237
Postcode sectors in CF236
Council1
Towns in CF231
Postcode districts next to CF234
Nearest rail stations4
More in the CF postcode area2
CF23 in brief
CF23 is a postcode district covering Cardiff, Cyncoed and Pen-y-lan, in Cardiff.
About 49,787 people lived in CF23 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £290,000 in 2025 across 609 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 63.7 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in CF23 was £290,000 in 2025.
CF23 had 48,085 usual residents at the census.
In CF23, 95.9% of homes and businesses could get gigabit-capable broadband in January 2026.
In CF23, 3.2% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.