LL57 postcode district: Bangor and around, Gwynedd
LL57 is a postcode district in Wales, with 907 postcodes in use in 5 sectors. It has postcodes in Bangor and Bethesda. Its council is Gwynedd.
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources
Every postcode in LL57, and which are new since 2020
- New since 2020: 28
- In use before 2020: 879
- Outline: where 5 or more new postcodes since 2020 lie together
Of the 907 postcodes in LL57 that ONS places, 28 are new since 2020 and 879 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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and 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 53.2068, longitude -4.1121. 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
Where the new postcodes lie together
- 8 new postcodes since 2020, outlined on the map. LL57 9EE, is the newest of them.
What broadband can you get in LL57?
Ofcom reports on 884 of the 907 postcodes in LL57. At 490 of them every home and business can get gigabit broadband, and at 8 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
What do homes sell for in LL57?
Homes in LL57 sold for a typical £188,750 in the 12 months to August 2026, across 200 sales, up 7.9% on the 12 months before, HM Land Registry's figures show.
- Detached £350,000 41 sales
- Semi-detached £241,250 56 sales
- Terraced £146,250 94 sales
- Flat or maisonette £90,000 9 sales
Each bar is that kind's typical price, against the most expensive kind here.
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
Postcodes in LL57
Pick a sector, then a postcode. A sector is the district plus the next digit.
UK postcode format explainedPlaces in LL57
Towns and villages with postcodes in LL57, and how many each has here.
Who covers LL57
How many of the district's postcodes in use fall under each council, constituency and police force area.
Councils
- Gwynedd907
Constituencies
- Bangor Aberconwy882
- Dwyfor Meirionnydd25
Police force areas
- North Wales907
Next to LL57
"Next to" is by number: the districts before and after LL57 in the LL area.
Check a postcode
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