| Postcode | LL49 9PG | 
|---|---|
| Post Town | Porthmadog | 
| Nearest station | Porthmadog (1 km) | 
| Bus stops | 
                       Australia (SE) 
Park B (NW) 
Station (SE) 
Park (NW) 
Station (NW) 
Heol-y-Parc (SE) 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 5 View | 
| Known addresses | 
                       Ynys Tywyn, Madoc Street, Porthmadog 
                       | 
                  
| Main property type | Detached | 
| Businesses | 
| Latitude | 52.925386 | |
|---|---|---|
| Longitude | -4.128274 | |
| Easting | 257027 | |
| Northing | 338563 | |
| Grid reference | SH570385 | |
| UTM reference | 30U 424151 5864566 | |
| what3words | tonality.smuggled.neckline | |
| FixPhrase | crop lumping shortcut uncorrupt | |
| Plus code | 9C4QWVGC+5M | |
| Altitude | 5 metres (18 feet) | |
| Sunrise (today) | 7:20 | |
| Sunset (today) | 16:41 | |
| Distance away | ||
| Distance to sea | 0 KMs (0 miles) | 
| Parish | Porthmadog | W04000097 | 
|---|---|---|
| Ward | Dwyrain Porthmadog | W05001531 | 
| Unitary Authority | Gwynedd | W06000002 | 
| County | Gwynedd | W11000004 | 
| Constituency (2024) | Dwyfor Meirionnydd | W07000096 | 
| MP | Liz Saville Roberts | Plaid Cymru | 
| 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) | 1 | |
|---|---|---|
| Households (2011) | 1 | |
| Index of Multiple Deprivation (2019) | 
                     Most deprivedLeast deprived 
                   | 
                |
| Average household income (2020) | 
                       Lowest (£22,200)
                        Highest (£108,100)
                       
                     | 
                  |
| Rural/urban (2021) | Larger rural Further from a major town or city | |
| Rural/urban (2011) | Rural town and fringe in a sparse setting | |
| Built up area (2024) | Porthmadog | W45000799 | 
| Census output area (2021) | W00000536 | |
| Census output area (2011) | 8C1 | |
| Lower layer super output area (2021) | Gwynedd 010C | W01000105 | 
| Lower layer super output area (2011) | Gwynedd 010C | W01000105 | 
| Middle layer super output area (2021) | Porthmadog | W02000019 | 
| Middle layer super output area (2011) | Porthmadog | W02000019 | 
| Travel to work area | Pwllheli and Porthmadog | W22000030 | 
| Average property price in Llandudno | £206,073 | 
|---|---|
| Annual change | 1.4% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Ynys Tywyn, Madoc Street, Porthmadog | Detached (freehold) | Aug 2004 | £185,000 |