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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 moderate deprivation and moderate crime levels, with around 53 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
53
Deprivation level
6/10
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
30.23(-18%)
Anti-social behaviour
20.33(+40%)
Criminal damage and arson
8.45(+5%)
Public order
4.88(-45%)
Other theft
3.56(-29%)
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 58 recent sales, the median property price is £160,000 in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle area, with individual transactions ranging from £60,000 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
Detached16£289,000
Semi-Detached13£148,000
Terraced29£143,500

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

LL547BN

Uwch Llifon Terrace

LL546DY

Ffordd Nebo

LL546SP

Bryn Sisillt

LL547RU

Tryfan

LL547TF

Y Groeslon

LL545NT

Clynnog

LL545TH

Dol Meredydd

LL546AJ

Maes Y Llenor

LL546EH

Ffordd Cors Y Llyn

LL546HP

Church Road

LL546PA

Chapel Street

LL547SB

Trallwyn Terrace

LL547TA

Y Grugan

LL545NS

Clynnog

LL546BB

Ffordd Cors Y Llyn

LL546BG

Nantlle Road

LL546EA

Lon Pant Y Gog

LL546ET

Llwyn Fuches

LL546HJ

Ffordd-Y-Sir

LL547AD

Lon Bron Arfon

LL547DL

Lon Cefn Gosen

LL547SU

Grugan Ganol Cottages

LL545DN

Clynnog

LL545SS

Lon Cefn Glyn

LL546NP

Clynnog Road

LL547AP

Lon Bron Arfon

LL547EE

Y Groeslon

LL547TR

Lon Llainffynnon

LL547TT

Lon Llainffynnon

LL545ST

Y Groeslon

LL545PW

Llain Uchaf

LL546LQ

Lon Pitar

LL546RT

Ffordd Cors Y Llyn

LL547RT

Bryn Teg

LL547TJ

Lon Newydd

LL547UA

Brynteg

LL545EY

Clynnog

LL546DS

Ffordd Cae Duon

LL546SB

Tal Garnedd

LL547TY

Pen Bonc

LL545NH

Clynnog

LL546ED

Ffordd Y Llyn

LL546EF

Ffordd Nebo

LL547DW

Y Groeslon

LL546EB

Clynnog

LL546RH

Rhwng Llwyni Terrace

LL545SE

Y Groeslon

LL546BX

Pen-y-groes

LL546HU

Rhiwlas Road

LL546PW

Tre Ddafydd

LL545EE

Clynnog Road

LL545NG

Clynnog

LL546SU

Llanllyfni

LL546RS

Lon Ddwr

LL546AF

Nantlle Houses

LL546AU

Bro Silyn

LL546DW

Ffordd Cae Duon

LL546HG

Hyfrydle Road

LL546PR

Bro Llwyndu

LL547DE

Glynllifon Terrace

LL547SH

Frondirion Isaf

LL545SL

Y Groeslon

LL545SR

Lon Cefn Glyn

LL545TP

Lôn Morfa

LL546RA

Mor Awel Estate

LL546SG

Rhedyw Road

LL546SS

Bryn Rhedyw

LL547EW

Y Groeslon

LL546DT

Ffordd Cae Duon

LL546EW

Ffordd Nasareth

LL546HQ

Ffordd-Y-Sir

LL547BS

Bron Y Foel Terrace

LL547RP

Carmel Terrace

LL547SW

Pen Bonc

LL545EB

Clynnog Road

LL545EG

Lon Y Wig

LL545EU

Clynnog

LL545NL

Clynnog

LL545TE

Y Groeslon

LL545TF

Y Groeslon

LL546DJ

Ger Y Llan

LL546LG

Blue Bell

LL546SN

Rhedyw Road

LL547DD

Y Groeslon

LL547PU

Glasfryn Terrace

LL547TL

Dyffryn Terrace

LL547TN

Dol Elen

LL546BF

Allt Doli

LL546HY

Llanllyfni

LL547AR

Lon Batus

LL547BG

Tryfan

LL546DF

Ffordd Rhedyw

LL546HL

Station Road

LL546NZ

Tan Y Bont

LL547PG

Y Groeslon

LL547RW

Mount Pleasant Terrace

LL547TG

Rathbone Terrace

LL545TJ

Ger Y Llan

LL546BW

Llanllyfni

LL545EA

Y Groeslon

Data Sources

All data is sourced from official UK government agencies and public datasets. Last updated: 16/01/2026.