| Postcode | LL12 0PW | 
|---|---|
| Post Town | Wrexham | 
| Nearest station | Gwersyllt (2 km) | 
| Bus stops | St David`s Crescent (W) St David`s Crescent (E) Pentre Street (NW) New House Avenue (NW) Fish & Chip Shop (SE) Cemetery (N) | 
| Roads in this postcode | |
| Number of UPRNs | 21 View | 
| Known addresses | 1 Mayville Avenue, Llay 3 Mayville Avenue, Llay 8 Mayville Avenue, Llay 10 Mayville Avenue, Llay 11 Mayville Avenue, Llay 17 Mayville Avenue, Llay | 
| Main property type | Semi-detached | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 53.089138 | |
|---|---|---|
| Longitude | -2.996718 | |
| Easting | 333344 | |
| Northing | 355123 | |
| Grid reference | SJ333551 | |
| UTM reference | 30U 500219 5882186 | |
| what3words | unafraid.squabbles.cakes | |
| FixPhrase | cross lurk subside thread | |
| Plus code | 9C5V32Q3+M8 | |
| Altitude | 80 metres (262 feet) | |
| Sunrise (today) | 7:09 | |
| Sunset (today) | 16:44 | |
| Distance away | ||
| Distance to sea | 14.6 KMs (9.1 miles) | 
| Parish | Llay | W04000233 | 
|---|---|---|
| Ward | Llay | W05001742 | 
| Unitary Authority | Wrexham | W06000006 | 
| County | Clwyd | W11000001 | 
| Constituency (2024) | Wrexham | W07000111 | 
| MP | Andrew Ranger | Labour | 
| Police force | North Wales | |
| Water company | Dee Valley Water | |
| NUTS/ITL 3 | Flintshire and Wrexham | |
| 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) | 42 | |
|---|---|---|
| Households (2011) | 17 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Larger rural: Nearer to a major town or city | |
| Rural/urban (2011) | Rural town and fringe | |
| Built up area (2024) | Llay | W45000758 | 
| Census output area (2021) | W00002085 | |
| Census output area (2011) | 8A2 | |
| Lower layer super output area (2021) | Wrexham 003D | W01000391 | 
| Lower layer super output area (2011) | Wrexham 003D | W01000391 | 
| Middle layer super output area (2021) | Llay South & Gwersyllt East | W02000080 | 
| Middle layer super output area (2011) | Llay South & Gwersyllt East | W02000080 | 
| Travel to work area | Wrexham | W22000034 | 
| Average property price in Llandudno | £205,971 | 
|---|---|
| Annual change | 1.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 8 Mayville Avenue, Llay | Semi-detached (freehold) | Sep 2022 | £210,000 | 
| 11 Mayville Avenue, Llay | Semi-detached (freehold) | Aug 2019 | £105,000 | 
| Semi-detached (freehold) | Jun 2002 | £79,950 | |
| 3 Mayville Avenue, Llay | Semi-detached (freehold) | Jun 2016 | £130,500 | 
| Semi-detached (freehold) | Jan 2015 | £122,500 | |
| 17 Mayville Avenue, Llay | Semi-detached (freehold) | Apr 2002 | £11,000 | 
| 10 Mayville Avenue, Llay | Semi-detached (freehold) | May 2000 | £55,000 | 
| 1 Mayville Avenue, Llay | Detached (freehold) | Jan 1999 | £67,000 |