| Postcode | LL57 1AS | 
|---|---|
| Post Town | Bangor | 
| Nearest station | Bangor (Gwynedd) (2 km) | 
| Bus stops | Depot (NW) Depot (SE) Orme Road (NE) Canolfan Bangor (SW) Bron Derw Surgery (SE) Canolfan Bangor (NE) | 
| Roads in this postcode | |
| Number of UPRNs | 42 View | 
| Known addresses | 5 Seiriol Road, Bangor 11 Seiriol Road, Bangor 20 Seiriol Road, Bangor 23 Seiriol Road, Bangor 24 Seiriol Road, Bangor 25 Seiriol Road, Bangor 26 Seiriol Road, Bangor 31 Seiriol Road, Bangor 33 Seiriol Road, Bangor 35 Seiriol Road, Bangor 43 Seiriol Road, Bangor 45 Seiriol Road, Bangor 47 Seiriol Road, Bangor 49 Seiriol Road, Bangor | 
| Main property type | Terraced | 
| Businesses | 
| Latitude | 53.23253 | |
|---|---|---|
| Longitude | -4.120723 | |
| Easting | 258546 | |
| Northing | 372710 | |
| Grid reference | SH585727 | |
| UTM reference | 30U 425193 5898724 | |
| what3words | heads.minivans.sponge | |
| FixPhrase | crouton lumping simmering unmindful | |
| Plus code | 9C5Q6VMH+2P | |
| Altitude | 6 metres (19 feet) | |
| Sunrise (today) | 7:14 | |
| Sunset (today) | 16:48 | |
| Distance away | ||
| Distance to sea | 0.8 KMs (0.5 miles) | 
| Parish | Bangor | W04000046 | 
|---|---|---|
| Ward | Dwyrain Bangor | W05001530 | 
| Unitary Authority | Gwynedd | W06000002 | 
| County | Gwynedd | W11000004 | 
| Constituency (2024) | Bangor Aberconwy | W07000083 | 
| MP | Claire Hughes | Labour | 
| Police force | North Wales | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Gwynedd | |
| NUTS/ITL 2 | North Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | January 1980 | 
|---|---|
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Population (2011) | 99 | |
|---|---|---|
| Households (2011) | 38 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Further from a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Built up area (2024) | Bangor | W45000697 | 
| Census output area (2021) | W00000397 | |
| Census output area (2011) | 8B1 | |
| Lower layer super output area (2021) | Gwynedd 001C | W01000077 | 
| Lower layer super output area (2011) | Gwynedd 001C | W01000077 | 
| Middle layer super output area (2021) | Bangor City | W02000010 | 
| Middle layer super output area (2011) | Bangor City | W02000010 | 
| Travel to work area | Bangor and Holyhead | W22000022 | 
| Average property price in Llandudno | £205,971 | 
|---|---|
| Annual change | 1.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 23 Seiriol Road, Bangor | Terraced (freehold) | Apr 2025 | £170,000 | 
| Terraced (freehold) | Sep 2016 | £130,000 | |
| 5 Seiriol Road, Bangor | Terraced (freehold) | Jan 2025 | £160,000 | 
| Terraced (freehold) | May 2011 | £134,000 | |
| Terraced (freehold) | Aug 2010 | £132,000 | |
| Terraced (freehold) | Dec 2007 | £140,000 | |
| Terraced (freehold) | Nov 2001 | £63,500 | |
| Terraced (freehold) | Sep 1997 | £30,050 | |
| 26 Seiriol Road, Bangor | Terraced (freehold) | Feb 2023 | £160,000 | 
| Terraced (freehold) | May 2010 | £140,000 | |
| 35 Seiriol Road, Bangor | Terraced (freehold) | Aug 2022 | £170,000 | 
| 47 Seiriol Road, Bangor | Terraced (freehold) | Oct 2021 | £159,000 | 
| Terraced (freehold) | Jul 2002 | £79,450 | |
| Terraced (freehold) | Jan 1999 | £55,000 | |
| 43 Seiriol Road, Bangor | Terraced (freehold) | Oct 2020 | £120,000 | 
| 25 Seiriol Road, Bangor | Terraced (freehold) | Mar 2018 | £135,000 | 
| 45 Seiriol Road, Bangor | Terraced (freehold) | Sep 2016 | £145,000 | 
| Terraced (freehold) | Feb 2013 | £145,500 | |
| Terraced (freehold) | Aug 2009 | £135,000 | |
| Terraced (freehold) | Apr 2003 | £89,500 | |
| Terraced (freehold) | Mar 2000 | £55,950 | |
| Terraced (freehold) | Dec 1995 | £36,500 | |
| 11 Seiriol Road, Bangor | Terraced (freehold) | Sep 2013 | £159,950 | 
| Terraced (freehold) | Jun 2010 | £155,000 | |
| 24 Seiriol Road, Bangor | Terraced (freehold) | Aug 2013 | £150,000 |