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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

LL545DY

Beddgwenan

LL546BW

Llanllyfni

LL545DE

Clynnog

LL547EB

Garreg Fawr

LL546RH

Rhwng Llwyni Terrace

LL546RN

Tyn Y Weirglodd

LL546AW

Cavour Street

LL547SU

Grugan Ganol Cottages

LL547RT

Bryn Teg

LL545SN

Tyn Lon

LL545NP

St Beunos Court

LL546RU

Ffordd Cors Y Llyn

LL545SG

Y Groeslon

LL547SD

Tryfan

LL546NU

Baptist Street

LL546HE

County Road

LL546EE

Ffordd Cors Y Llyn

LL545BS

Clynnog

LL545BW

Llwyn Beuno

LL546SD

Penbryn

LL545ET

Garth Estate

LL546NH

Lon Yr Eglwys

LL546AT

Talyllyn

LL547BE

Tan Y Fron Terrace

LL545PR

Clynnog

LL545EF

Clynnog

LL546RW

Maes Dulyn

LL546NE

Trem Y Wyddfa

LL546DE

Llanllyfni

LL547PT

Dolawen Terrace

LL546PA

Chapel Street

LL546BB

Ffordd Cors Y Llyn

LL547EW

Y Groeslon

LL547EA

Bryn Ffynnon

LL546NY

Ffordd Haearn Bach

LL547TD

Grugan Terrace

LL547TY

Pen Bonc

LL546BL

Bala Deulyn Terrace

LL547UB

Pen Bonc

LL546RF

Carmel Road

LL546HT

Rhiwlas Road

LL546PG

Stad Tan Y Coed

LL547AY

Bryn Twrog Cottages

LL547NL

Maes Tryfan

LL545SR

Lon Cefn Glyn

LL545DG

Clynnog

LL545PL

Brynmor Terrace

LL546EF

Ffordd Nebo

LL545EP

Clynnog

LL546BH

Penyrorsedd Terrace

LL545EL

Clynnog Road

LL546SW

Rhedyw Road

LL546ES

County Road

LL546LF

Pen Parc

LL547BH

Bro Arfon

LL546PJ

Cae Capel Bach

LL545ST

Y Groeslon

LL546SH

Lon Ty Gwyn

LL546PP

Caernarfon Road

LL546SB

Tal Garnedd

LL546NT

Ffordd Clynnog

LL545DD

Clynnog

LL545NL

Clynnog

LL519EJ

Clynnog

LL547DS

Lon Batus

LL546DN

Ffordd Nasareth

LL545PD

Bro Celyn

LL546NN

Market Place

LL546DB

Penygroes Industrial Estate

LL547BL

Eryri Terrace

LL547RR

Tryfan

LL545TB

Church Cottages

LL545TA

Y Groeslon

LL547UD

Pen Bonc

LL546RL

Kings Road

LL547AP

Lon Bron Arfon

LL547DU

Y Garreg

LL547UE

Lon Grugan Ddu

LL545PW

Llain Uchaf

LL547RE

Tryfan

LL546LR

Water Street

LL545SJ

Y Groeslon

LL547BS

Bron Y Foel Terrace

LL546PS

Bro Llwyndu

LL547DW

Y Groeslon

LL546RA

Mor Awel Estate

LL545DU

Lon Cefn Glyn

LL546HD

Victoria Road

LL546HR

Coed Madog Road

LL546TA

Clynnog

LL547EL

Maes Tryfan

LL519DZ

Clynnog

LL546DW

Ffordd Cae Duon

LL546PU

Carmel Road

LL547RL

Pisgah Terrace

LL546AY

Tyn Y Weirglodd Terrace

LL547TE

Gladstone Terrace

LL545BP

Clynnog

LL547SF

Nantlle Road

LL545TP

Lôn Morfa

Data Sources

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