Caernarfon
TownTown in Gwynedd, Wales.
Caernarfon is an ONS built-up area: the land built up as one town, whatever council it is in. Figures for Caernarfon add up the census output areas (or, for claimants, the neighbourhoods) that sit mostly inside it, so they are close to, but not exactly, the town’s own.
Radon Affected Area by town
Worked out by Open Index · 2022
About 100% of people in Caernarfon live in a 1 km square that the radon atlas marks as a radon Affected Area.
How Caernarfon compares
Each dot is a town. The black line marks the middle one.
Is Caernarfon safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Caernarfon at a rate of 162.7 per 1,000 people.
That compares with 96.7 per 1,000 people across Wales.
In August 2026 alone, 173 cases of crime and anti-social behaviour were recorded in Caernarfon.
In the 12 months to August 2026, the most common types were violence and sexual offences (613), anti-social behaviour (324) and other crime (228).
A year earlier, the recorded crime rate in Caernarfon was 172.5 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 Caernarfon, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so Caernarfon has no single figure. Of its 5 neighbourhoods with a rank:
- Decile 1 (Wales’s most deprived 10%): 1 neighbourhood
- Decile 3: 1 neighbourhood
- Decile 4: 1 neighbourhood
- Decile 7: 1 neighbourhood
- Decile 9: 1 neighbourhood
Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.
Neighbourhoods in Caernarfon
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Gwynedd 006A | 2,114 | 181.6 per 1,000 | 3 | 93.5% |
| Gwynedd 006B | 2,256 | 135.3 per 1,000 | 9 | 89.6% |
| Gwynedd 006C | 2,548 | 146.1 per 1,000 | 1 | 98.6% |
| Gwynedd 006D | 1,597 | 48.0 per 1,000 | 7 | 96.7% |
| Gwynedd 007C | 1,564 | 299.9 per 1,000 | 4 | 88.8% |
Your MP
- Liz Saville RobertsPlaid CymruMP for Dwyfor Meirionnydd
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Council1
Postcode districts covering Caernarfon1
Middle areas in Caernarfon1
Towns near Caernarfon3
Caernarfon in brief
Caernarfon is a town in Gwynedd, Wales.
About 10,051 people lived in Caernarfon in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £185,000 in 2025 across 119 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 162.7 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in Caernarfon was £185,000 in 2025.
Caernarfon had 9,831 usual residents at the census.
About 100% of people in Caernarfon live in a 1 km square that the radon atlas marks as a radon Affected Area.
In Caernarfon, 93.5% of homes and businesses could get gigabit-capable broadband in January 2026.