| Postcode | LL55 1LP | 
|---|---|
| Post Town | Caernarfon | 
| Nearest station | Llanfairpwll (8 km) | 
| Bus stops | Waterloo Port (SW) Ffordd Bangor (SW) Cae Gwyn (NE) Llys Gwyn (SW) Lon Campbell (NE) Yr Hwylfa (NE) | 
| Roads in this postcode | |
| Number of UPRNs | 21 View | 
| Known addresses | Greystanes, Waterloo Port, Caernarfon Netherlee, Waterloo Port, Caernarfon 1 Marine Terrace, Caernarfon 3 Marine Terrace, Caernarfon 4 Marine Terrace, Caernarfon 6 Marine Terrace, Caernarfon 7 Marine Terrace, Caernarfon | 
| Main property type | Terraced | 
| Businesses | 
| Latitude | 53.153102 | |
|---|---|---|
| Longitude | -4.264051 | |
| Easting | 248701 | |
| Northing | 364169 | |
| Grid reference | SH487641 | |
| UTM reference | 30U 415471 5890048 | |
| what3words | locker.stable.actual | |
| FixPhrase | crouch lumpiness spearhead tidiness | |
| Plus code | 9C5Q5P3P+69 | |
| Altitude | 4 metres (15 feet) | |
| Sunrise (today) | 7:14 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 0.2 KMs (0.1 miles) | 
| Parish | Caernarfon | W04000056 | 
|---|---|---|
| Ward | Menai | W05001551 | 
| 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) | 30 | |
|---|---|---|
| Households (2011) | 14 | |
| 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) | Rural town and fringe | |
| Census output area (2021) | W00000480 | |
| Census output area (2011) | 6B2 | |
| Lower layer super output area (2021) | Gwynedd 006B | W01000093 | 
| Lower layer super output area (2011) | Gwynedd 006B | W01000093 | 
| Middle layer super output area (2021) | Caernarfon East | W02000015 | 
| Middle layer super output area (2011) | Caernarfon East | W02000015 | 
| Travel to work area | Bangor and Holyhead | W22000022 | 
| Average property price in Llandudno | £205,971 | 
|---|---|
| Annual change | 1.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 6 Marine Terrace, Caernarfon | Terraced (freehold) | Aug 2024 | £330,000 | 
| 3 Marine Terrace, Caernarfon | Terraced (freehold) | Nov 2023 | £330,000 | 
| Terraced (freehold) | Apr 1998 | £70,000 | |
| 7 Marine Terrace, Caernarfon | Terraced (freehold) | Oct 2021 | £605,000 | 
| Terraced (freehold) | Nov 2003 | £340,000 | |
| 1 Marine Terrace, Caernarfon | Terraced (freehold) | Jul 2016 | £252,000 | 
| Terraced (freehold) | May 2002 | £150,000 | |
| 4 Marine Terrace, Caernarfon | Terraced (freehold) | May 2014 | £165,000 | 
| Greystanes, Waterloo Port, Caernarfon | Detached (freehold) | Aug 2006 | £417,500 | 
| Netherlee, Waterloo Port, Caernarfon | Detached (freehold) | Aug 1997 | £130,000 |