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.

Postcodes in use: 907
Sectors: 5
Council: Gwynedd
Places: 2 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in LL57, by gigabit broadband

No home or business can get gigabit: 209
Some can get gigabit: 185
Every home and business can get gigabit: 490
Ofcom gives no figure: 23
Outline: where 5 or more postcodes without gigabit lie together

Of the 907 postcodes in LL57 that ONS places, 209 have no home or business that can get gigabit, 185 have some that can, 490 can all get it and 23 have no Ofcom figure.

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. 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; gigabit: Ofcom, Connected Nations, Spring 2026; 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

Postcodes without gigabit

209 postcodes here have no gigabit. These are the 12 first in postcode order.

LL57 1AG LL57 1AJ LL57 1AQ LL57 1AZ LL57 1BF LL57 1BQ LL57 1DX LL57 1DZ LL57 1EA LL57 1ED LL57 1EJ LL57 1EQ

Where the postcodes without gigabit lie together

66 postcodes without gigabit, outlined on the map. LL57 3SW, is the one nearest the middle of them.
18 postcodes without gigabit, outlined on the map. LL57 2JY, is the one nearest the middle of them.
17 postcodes without gigabit, outlined on the map. LL57 1YE, is the one nearest the middle of them.
9 postcodes without gigabit, outlined on the map. LL57 2FE, is the one nearest the middle of them.
9 postcodes without gigabit, outlined on the map. LL57 4RJ, is the one nearest the middle of them.
7 postcodes without gigabit, outlined on the map. LL57 1HU, is the one nearest the middle 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).

Postcodes where every home can get gigabit490 of 884

Postcodes where every home can get superfast763 of 884

Postcodes where some cannot get decent broadband8 of 884

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 checker

Source: 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.

£188,750 typical price, the 12 months to August 2026

£175,000 12 months to August 2025

▲ up 7.9% on the 12 months before

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