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Deiniolen

Interactive map displaying Deiniolen

About

Deiniolen ward lies within the historic slate quarrying region of Dyffryn Nantlle, north of Llanberis. The area is defined by its industrial heritage, with the remnants of the Dorothea Quarry and its flooded pits forming a significant part of the local landscape. The community is centred around the village of the same name, with residential streets set against a backdrop of former quarry workings and upland terrain.

The physical environment is a mix of built settlement and post-industrial land, with Mynydd Mawr rising to the west. Local life focuses on the primary school, community centres, and chapels. The ward's history is visibly embedded in the terrain, where water-filled quarries and slate tips are common features across the open, rugged ground.

Area overview

On average Deiniolen has high deprivation and low crime levels, with around 52 crimes per 1,000 residents per year, about 39% below the Wales average of 86 per 1,000. Approximately 17.3% of homes in this area are social housing provided by a local council or housing association. The average income per household in Deiniolen is £49,454 per year. Deiniolen is home to around 1,896 people, with a population density of about 108.3 per km².

Crime rate
3/10
Crimes per 1k residents
52
Deprivation level
7/10
Income level
9/10
Social housing
17.3%
Connectivity
N/A

Area Profile

Deiniolen Population
1,896
Population density
108.3 per km²

Crime

Crime per 1,000 population

Violence and sexual offences
33.76(-1%)
Anti-social behaviour
7.91(-39%)
Criminal damage and arson
5.27(-28%)
Other crime
4.22(+101%)
Public order
3.69(-55%)
Wales average

Demographics

Ethnic groups

British
1,826
96.41%
Other White
30
1.58%
White and Black Caribbean (mixed)
8
0.42%
Other Mixed or Multiple ethnic groups
8
0.42%
Irish
6
0.32%
Total population: 1,894

Economics

Education (age 16+)

Level 4 qualifications or above
548
35.98%
Level 2 (GCSEs 9-4)
249
16.35%
Level 3 (A level)
234
15.36%
No qualifications
228
14.97%
Level 1 (GCSEs 3-1)
136
8.93%
Total 16+ residents: 1,523

Housing

Housing tenure

Owns outright
316
39.3%
Owns with a mortgage
213
26.49%
Social rents from council
88
10.95%
Other social rented
80
9.95%
Private landlord or letting agency
69
8.58%
Total households: 804

Property prices in Deiniolen

Median price£155,000
Price per sq ft£183
Sales (last 12 months)23
Typical range (middle 50%)£117K – £288K

Based on 23 recent sales, the median property price is £155,000 (about £183 per square foot) in Deiniolen area, with individual transactions ranging from £58,000 up to £670,000.

Prices by property typelast 12 months

Median sale price, median price per square foot, sales count, and percentile information for each property type in Deiniolen over the last year.
TypeSalesMedian£/sq ft
Detached10£310,000£265
Terraced11£130,000£159
Semi-Detached2£106,000£147

10-year price trendmedian sale price in Deiniolen

Sale price

Ten year median sale price trend for each property type in Deiniolen.
YearDetachedSemi-DetachedTerraced
2016£124,950£71,900
2017£231,000£110,000£80,250
2018£185,000£145,000£90,000
2019£223,000£106,500£111,000
2020£199,000£172,000£120,500
2021£248,000£190,000£112,500
2022£252,500£232,000£97,000
2023£266,000£160,000£115,000
2024£371,250£178,750£115,000
2025£330,000£115,000£130,000
2026£310,000£137,000
Ten year median sale price trend for each property type in Deiniolen.

Price per sq ft

Ten year median sale price per square foot trend for each property type in Deiniolen.
YearDetachedSemi-DetachedTerraced
2016£139£110
2017£138£103£106
2018£195£192£101
2019£280£112£126
2020£141£143
2021£254£194£149
2022£283£205£128
2023£280£201£167
2024£241£164£152
2025£277£191£160
2026£273£120
Ten year median sale price per square foot trend for each property type in Deiniolen.

Price distribution by property typelast 12 months

Price distribution by property type for Deiniolen in the last year.

Frequently asked questions about Deiniolen

Is Deiniolen safe?

Deiniolen records about 52 crimes per 1,000 residents per year, which is a low crime rate for England: it scores 3 out of 10 on the Area360 crime scale, where 10 is the highest crime level.

What is the average house price in Deiniolen?

The median sale price in Deiniolen is £155,000 (about £183 per square foot) based on 23 registered sales according to HM Land Registry data.

How deprived is Deiniolen?

Deiniolen scores 7 out of 10 on the deprivation scale, where 10 is the most deprived. The typical neighbourhood in Deiniolen sits around rank 663 of 32,844 in England on the official Index of Multiple Deprivation (rank 1 is the most deprived).

What is the average household income in Deiniolen?

The average household income in Deiniolen is around £49,454 per year, and 17% of homes are social housing (ONS data).

Who are the local councillors for Deiniolen?

Deiniolen is represented by 1 elected councillor: Elfed Wyn Williams (Plaid Cymru - The Party of Wales).

All postcodes in Deiniolen

LL553EJ

Stad Macpela

LL553NE

Deiniolen

LL553DN

Dinorwic Terrace

LL553HS

Caradog Place

LL553NG

Minffordd

LL553HL

Rhydfadog Estate

LL553HB

Deiniolen

LL553HY

North Road

LL553HT

Marian Terrace

LL553LS

Pentre Helen

LL553AJ

Gwel Y Bigil

LL553EZ

Deiniolen

LL553HN

High Street

LL553NB

Deiniolen

LL553DS

Penyrolchfa

LL553DH

Arfon Cottages

LL553LA

Gwel Y Bigil

LL553LJ

Bro Gwenlyn

LL553HD

Follet Close

LL553LF

Tabernacl Street

LL553LD

Glyn Terrace

LL553DR

Glynafon Terrace

LL553DL

Deiniolen

LL553NF

Hafod Oleu

LL553UA

Tai Gerddi

LL553LP

Hafodoleu

LL553LU

Deiniolen

LL553HX

Deiniolen

LL553HR

High Street

LL553EH

Deiniolen

LL553LB

View Terrace

LL553ES

Minffordd

LL553NA

Lon Garret

LL553EL

Bro Elidir

LL553HP

High Street

LL553HG

Deiniolen

LL553LY

Deiniolen

LL553ET

Dinorwic Cottages

LL553EY

Deiniolen

LL553DU

California Terrace

LL553DT

Brynteg

LL553DE

Deiniolen

LL553EA

Deiniolen

LL553HU

High Street

LL553EG

Deiniolen

LL553DW

Deiniolen

LL553LE

Green Terrace

LL553ND

Deiniolen

LL553EQ

Deiniolen

LL553EP

Lon Garret

LL553EB

Maes Gwylfa

LL553DF

Stad Hafod

LL553ER

Deiniolen

LL553DG

Lon Haern

LL553LG

Cynfi Terrace

LL553HW

Vaynol Terrace

LL553DP

Glandwr Terrace

LL553EE

Lon Tai Castell

LL553HH

High Street

LL553LT

Victoria Terrace

LL553EW

Deiniolen

LL553LL

Deiniol Road

LL553EF

Lon Tai Castell

LL553LR

Hafod Oleu

LL553LH

New Street

LL553PA

Deiniolen

LL553LW

Pentre Helen

LL553LN

Pentre Helen

LL553DY

Gwyrfai Terrace

LL553EU

Dinorwic Houses

LL554TY

Lon Garret

LL553ED

Deiniolen

LL553HA

Deiniolen

LL553EN

Lon Garret

Data Sources

All data is sourced from official UK government agencies and public datasets. Last updated: 16/07/2026. Read more about how our statistics are calculated.