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Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle

Interactive map displaying Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle

About

The three settlements sit along the Nantlle Valley in Gwynedd, laid out on the floor of a long slate-bearing valley with quarry workings on the slopes above. Roofless mills, spoil tips and flooded quarry pits mark the landscape, and the name Dorothea appears on maps and in field names associated with a major slate quarry nearby. Traces of the old Nantlle Railway and its inclines can still be found where stone routes once ran from pit to quay, and narrow lanes thread between rows of houses and former mill sites.

Daily life in Pen-y-groes, Tal-y-sarn and Dyffryn Nantlle is shaped by the valley and by Welsh language and culture, which is in everyday use in shops, schools and chapels. Public footpaths follow old quarry tracks and drystone walls up onto the surrounding moor, offering direct access from village streets to the working pattern of the valley. Community centres and small local businesses mark the centres of the villages; market days, chapel meetings and choirs remain part of how people meet and use the valley.

Area overview

On average Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle has None deprivation and moderate crime levels, with around 50 crimes per 1,000 residents per year. Approximately 14.3% of homes in this area are social housing provided by a local council or housing association. The average income per household in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle is £43,746 per year. Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle is home to around 7,576 people, with a population density of about 63.9 per km2.

Crime rate
4/10
Crimes per 1k residents
50
Deprivation level
N/A
Income level
6/10
Social housing
14.3%
Connectivity
N/A

Area Profile

Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle Population
7,576
Population density
63.9 per km²

Crime

Crime per 1,000 population

Violence and sexual offences
27.85(-18%)
Anti-social behaviour
18.08(+39%)
Criminal damage and arson
8.18(+11%)
Public order
4.36(-47%)
Other theft
3.7(-19%)
Wales average

Demographics

Ethnic groups

British
7,355
97.11%
Other White
92
1.21%
White and Asian (mixed)
24
0.32%
Irish
19
0.25%
White and Black Caribbean (mixed)
18
0.24%
Total population: 7,574

Economics

Education (age 16+)

Level 4+ (Degree)
2,144
34.78%
No qualifications
1,031
16.72%
Level 3 (A level)
1,024
16.61%
Level 2 (GCSEs 9-4)
963
15.62%
Level 1 (GCSEs 3-1)
455
7.38%
Total 16+ residents: 6,165

Housing

Housing tenure

Owns outright
1,497
45.54%
Owns with a mortgage
856
26.04%
Private landlord or letting agency
299
9.1%
Other social rented
296
9.01%
Social rents from council
232
7.06%
Total households: 3,287

Property prices in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle

Based on 64 recent sales, the median property price is £162,500 in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle area, with individual transactions ranging from £50,000 up to £500,000.

Price distribution per property type (last year)

Price distribution by property type for Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle in the last year.

Median sale price and percentiles per property type (last year)

Median sale price, sales count, and percentile information for each property type in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle over the last year.
TypeSalesMedian
Semi-Detached10£154,000
Detached22£305,000
Terraced32£138,000

10 years median price trend in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle

Ten year median sale price trend for each property type in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle.

All postcodes in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle

LL546HB

Pen-y-groes

LL546HF

Hyfrydle Road

LL546HL

Station Road

LL547TA

Y Grugan

LL547TH

Y Groeslon

LL547EH

Maes Tryfan

LL547AB

Tryfan

LL547BP

Cesarea Terrace

LL546AE

Nantlle Road

LL546EW

Ffordd Nasareth

LL547AS

Tryfan

LL546NZ

Tan Y Bont

LL519DJ

Clynnog

LL546EH

Ffordd Cors Y Llyn

LL545PB

Llys Eben

LL546EA

Lon Pant Y Gog

LL546BN

Kinmel Terrace

LL546DY

Ffordd Nebo

LL545TD

Crescent

LL547PU

Glasfryn Terrace

LL546DH

Ffordd Nasareth

LL546BG

Nantlle Road

LL546AF

Nantlle Houses

LL546RR

Tanrallt Terrace

LL545PP

Clynnog

LL545SE

Y Groeslon

LL547TJ

Lon Newydd

LL547SB

Trallwyn Terrace

LL546DA

Llanllyfni Road

LL546SS

Bryn Rhedyw

LL546LW

Water Street

LL546PR

Bro Llwyndu

LL545TJ

Ger Y Llan

LL546DP

Ffordd Y Parc

LL547BN

Uwch Llifon Terrace

LL546LG

Blue Bell

LL546NG

Snowdon Street

LL547TT

Lon Llainffynnon

LL546NX

Cross Street

LL546AJ

Maes Y Llenor

LL547RF

Tryfan

LL547AD

Lon Bron Arfon

LL546DD

Felin Gerrig

LL545PE

Court Cottages

LL545EE

Clynnog Road

LL546RP

Lon Ddwr

LL547DR

Tryfan

LL546BF

Allt Doli

LL547PG

Y Groeslon

LL546SL

Lon Ddwr

LL546EN

Fron Dirion

LL546HS

Maes Llyfnwy

LL546DG

Lon Ty Gwyn

LL547DE

Glynllifon Terrace

LL545DB

Llys Eben

LL546TU

Cae Catrin

LL546SP

Bryn Sisillt

LL546SG

Rhedyw Road

LL546EG

Rhos Dulyn

LL546ST

Ffordd Clynnog

LL545SL

Y Groeslon

LL547RW

Mount Pleasant Terrace

LL546EY

County Road

LL546PB

Clynnog Road

LL545SF

Collfryn Cottages

LL546AB

Bryncelyn

LL545EA

Y Groeslon

LL547RP

Carmel Terrace

LL545ES

Lleuar Terrace

LL545SS

Lon Cefn Glyn

LL546ND

Trem Y Wyddfa

LL545NT

Clynnog

LL546RT

Ffordd Cors Y Llyn

LL546LQ

Lon Pitar

LL546PW

Tre Ddafydd

LL546BS

Llanllyfni

LL546AL

Eifion Terrace

LL546DU

Ffordd Nasareth

LL546HP

Church Road

LL547BG

Tryfan

LL545NN

Clynnog

LL545TQ

Maes Gwydion

LL546HG

Hyfrydle Road

LL547TP

Lon Llainffynnon

LL547SG

Tryfan

LL547BT

Tryfan

LL546LB

Pendyffryn

LL547DT

Lon Cerreg Fawr

LL546BU

Llanllyfni

LL545EN

Clynnog

LL546LE

Weirglodd-Newydd

LL546NR

West End Road

LL546HY

Llanllyfni

LL545DN

Clynnog

LL547DG

Ffordd Iago

LL547SH

Frondirion Isaf

LL545EB

Clynnog Road

LL545DA

Bro Celyn

LL545PF

Clynnog

LL547DP

Green Bank

Data Sources

All data is sourced from official UK government agencies and public datasets. Last updated: 16/05/2026.