Caernarfon
Caernarfon is covered by postcode district LL55. It is in the Gwynedd council area, Wales.
Every postcode in Caernarfon, and which are new since 2020
- New since 2020: 8
- In use before 2020: 276
Of the 284 postcodes in Caernarfon that ONS places, 8 are new since 2020 and 276 were in use before 2020.
Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. New since 2020 means it came into use in January 2020 or later. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.
The middle of its postcodes: latitude 53.1403, longitude -4.2661. Open this area on OpenStreetMap
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them
The 5 newest postcodes
Further out, not drawn
This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.
What is it like to live in Caernarfon?
Homes sold for a typical £195,000 in the 12 months to August 2026, up 11.4% on the 12 months before. At 212 of the 274 postcodes Ofcom reports on, every home and business can get gigabit broadband. 2 GP practices are at its postcodes. The nearest railway station is Llanfairpwll, 9.7 km from the middle of its postcodes in a straight line.
We don't rate places; here are the figures so you can judge.
Source: HM Land Registry, Ofcom, NHS England and the Department for Transport, as each section of this page says. See all our data sources
What do homes cost in Caernarfon?
Homes in Caernarfon sold for a typical £195,000 in the 12 months to August 2026, across 72 sales, up 11.4% on the 12 months before, HM Land Registry's figures show.
- Detached £315,000 10 sales
- Semi-detached £205,000 28 sales
- Terraced £155,000 33 sales
- Flat or maisonette 1 sale, too few to price
Each bar is that kind's typical price, against the most expensive kind here.
Across the whole LL55 district, Caernarfon's main postcode district: a typical £210,000.
Sales at the postcodes ONS places in Caernarfon: standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.
Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it
Are new homes being built in Caernarfon?
8 of the 284 postcodes now in use in Caernarfon came into use in January 2020 or later, ONS says. In the 12 months to August 2025, 0 of the 125 homes sold in Caernarfon were newly built (0%), HM Land Registry's records show; across the LL55 district, 0%.
The newest postcodes
A new postcode is often a new street or estate, but Royal Mail also makes new postcodes when it reorganises old ones, so not every one means new homes. Only postcodes still in use are counted.
New homes among the homes sold
| Period | In Caernarfon | Across the LL55 district |
|---|---|---|
| The 12 months to August 2026 | 0 of 72 (0%) | 0 of 193 (0%) |
| The 12 months to August 2025 | 0 of 125 (0%) | 0 of 271 (0%) |
Standard sales of homes at market value that HM Land Registry marks as newly built. New homes take longer to be registered than other sales, so the latest 12 months count fewer of them than were sold. A share is given from 5 sales or more.
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026; HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021, Open Government Licence v3.0. How we use it
What broadband can you get in Caernarfon?
Ofcom reports on 274 of the 284 postcodes in Caernarfon. At 212 of them every home and business can get gigabit broadband, and at 1 some cannot get decent broadband (10 Mbit/s).
Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.
Check one address on Ofcom's checkerSource: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it
How far is the station from Caernarfon?
The nearest railway station to the centre point of the postcodes in Caernarfon is Llanfairpwll Rail Station, 9.7 km away in a straight line.
- Llanfairpwll Rail Station Railway station 9.7 kmDrive
- Bodorgan Rail Station Railway station 12.4 kmDrive
- Bangor (Gwynedd) Rail Station Railway station 12.6 kmDrive
- Caernarfon (Welsh Highland Rly-Caernarfon) Underground, metro or tram 500 mWalk
Straight-line distances from the centre point, not routes. Walk: under 1.2 km. Cycle: 1.2 to 5 km. Drive: further.
Straight-line distances from the middle of the postcodes, not routes. Each postcode page lists its own nearest stations and bus stops. The Department for Transport's register does not say how often services run.
Source: Department for Transport, NaPTAN, read 17 October 2026, Open Government Licence v3.0. How we use it
Which GP surgeries are in Caernarfon?
The GP practices at the postcodes in Caernarfon. Each practice sets the area it takes patients from, so check with it before registering.
- Primary Care Cs Phone 0300 085 2345 650 mWalk
- Meddygfa Hafan Phone 01286 684100 750 mWalk
Source: NHS England, Organisation Data Service (GP practices), read 17 October 2026, Open Government Licence v3.0. How we use it
Is Caernarfon safe? Crime recorded around it
Police.uk records 1,646 crimes and reports of anti-social behaviour within a mile of the middle of the postcodes in Caernarfon over the 12 months from September 2025 to August 2026. August 2026 is the latest month it has published. These are counts, not a rate: we hold no count of the people who live, work or pass through, so we do not say whether a place is safe.
Each month, September 2025 to August 2026
- 123 September 2025
- 94 October 2025
- 144 November 2025
- 117 December 2025
- 127 January 2026
- 92 February 2026
- 144 March 2026
- 162 April 2026
- 157 May 2026
- 155 June 2026
- 157 July 2026
- 174 August 2026
By kind, over the 12 months
Also: vehicle crime 30, possession of weapons 22, other crime 22, bicycle theft 8, robbery 7, theft from the person 6.
Police.uk says its locations "always represent the approximate location of a crime". Each crime is moved to the nearest of a fixed list of map points, each over a street centre, a public place or a commercial premises, chosen so that every point covers at least eight addresses or none. A mile is a wide circle: in a town it takes in the centre and its shops, where much crime is recorded.
Crime around one postcodeSource: Police.uk (data.police.uk), data to August 2026, from its download of 30 September 2026, Open Government Licence v3.0. How we use it
Who runs Caernarfon?
- Council
- Gwynedd
- Parliamentary constituency
- Dwyfor Meirionnydd
- Police force area
- North Wales
- Country
- Wales
- MP
- Liz Saville Roberts (Plaid Cymru)
All 284 postcodes here share these. Wards differ: check a postcode for yours. What council am I in?
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. The MP: UK Parliament. See all our data sources
Moving to Caernarfon
Who to tell and what to sort out in your first week.
- Tell Gwynedd about council tax Council tax, on gwynedd.llyw.cymru
- Register to vote at the new address Register to vote on GOV.UK
- Register with a GP practice The GP practices in Caernarfon
- Take meter readings on the day you move in
- Power cut? Call 105. It is free. About 105, the power cut number
- Find out your bin day Check your bin day on BinDayBuddy, which reads the council's own collection system
Caernarfon postcodes
284 postcodes in use in Caernarfon, by district:
That district is in the LL postcode area.
Check a Caernarfon postcode
Enter a full postcode to see its ward, its flood risk, house prices in its sector and its nearest schools.
Do not know the postcode? What is my postcode?
Places near Caernarfon
With the typical price of a home in each, to set beside Caernarfon's £195,000. Distances are straight lines between the middles of each place's postcodes.
Questions about Caernarfon
- What is it like to live in Caernarfon?
- Homes sold for a typical £195,000 in the 12 months to August 2026, up 11.4% on the 12 months before. At 212 of the 274 postcodes Ofcom reports on, every home and business can get gigabit broadband. 2 GP practices are at its postcodes. The nearest railway station is Llanfairpwll, 9.7 km from the middle of its postcodes in a straight line. We don't rate places; here are the figures so you can judge. Source: HM Land Registry, Ofcom, NHS England and the Department for Transport, as each section of this page says.
- What is the postcode for Caernarfon?
- Caernarfon is covered by postcode district LL55, across 284 postcodes in use. Source: ONS Postcode Directory.
- Which council is Caernarfon in?
- Caernarfon is in the Gwynedd council area. Source: ONS Postcode Directory.
- Who is the MP for Caernarfon?
- Caernarfon is in the Dwyfor Meirionnydd parliamentary constituency. Its MP is Liz Saville Roberts (Plaid Cymru), as UK Parliament listed them on 14 October 2026. Constituency: ONS Postcode Directory.
- How much are houses in Caernarfon?
- Homes in Caernarfon sold for a typical £195,000 in the 12 months to August 2026, across 72 sales, up 11.4% on the 12 months before. Source: HM Land Registry Price Paid Data, files dated 28 September 2026.
- Does Caernarfon have a railway station?
- The nearest railway station to the centre point of the postcodes in Caernarfon is Llanfairpwll, 9.7 km away in a straight line. Source: Department for Transport, NaPTAN, read 17 October 2026.
- What broadband can you get in Caernarfon?
- Ofcom reports on 274 of the 284 postcodes in Caernarfon. At 212 of them every home and business can get gigabit broadband, and at 1 some cannot get decent broadband (10 Mbit/s). Source: Ofcom, Connected Nations, Spring 2026.
- Are new homes being built in Caernarfon?
- 8 of the 284 postcodes now in use in Caernarfon came into use in January 2020 or later, ONS says. In the 12 months to August 2025, 0 of the 125 homes sold in Caernarfon were newly built (0%), HM Land Registry's records show; across the LL55 district, 0%. Source: ONS Postcode Directory and HM Land Registry Price Paid Data.
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