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Pen-y-groes

Interactive map displaying Pen-y-groes

About

Pen-y-groes is a village within the Nantlle Valley, situated between the peaks of the Eifionydd hills and the shores of the Afon Llyfni. The area developed significantly in the 19th century around the slate industry and local quarries. Its layout reflects this industrial past, with terraced housing built for workers. The ward includes the neighbouring village of Llanllyfni, connected by the main road that runs through the valley floor.

The local economy has diversified from its historical base. The landscape is defined by former quarry sites and the presence of Yr Wyddfa (Snowdon) visible to the east. Community life centres on local schools, chapels, and shops along the high street. The area is a through-route for traffic heading towards the Llŷn Peninsula, linking the coastal and inland parts of Gwynedd.

Area overview

On average Pen-y-groes has moderate deprivation and moderate crime levels, with around 86 crimes per 1,000 residents per year. Approximately 18.9% 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 is £43,746 per year. Pen-y-groes is home to around 1,792 people, with a population density of about 245.6 per km2.

Crime rate
5/10
Crimes per 1k residents
86
Deprivation level
5/10
Income level
6/10
Social housing
18.9%
Connectivity
N/A

Area Profile

Pen-y-groes Population
1,792
Population density
245.6 per km²

Crime

Crime per 1,000 population

Violence and sexual offences
54.13(+48%)
Anti-social behaviour
33.48(+131%)
Criminal damage and arson
12.83(+59%)
Public order
7.81(-13%)
Other theft
5.58(+11%)
Wales average

Demographics

Ethnic groups

British
1,732
96.6%
Other White
21
1.17%
White and Black Caribbean (mixed)
10
0.56%
Other Asian
5
0.28%
Chinese
5
0.28%
Total population: 1,793

Economics

Education (age 16+)

Level 4 qualifications or above
451
30.98%
No qualifications
309
21.22%
Level 3 (A level)
238
16.35%
Level 2 (GCSEs 9-4)
212
14.56%
Apprenticeship
105
7.21%
Total 16+ residents: 1,456

Housing

Housing tenure

Owns outright
316
39.35%
Owns with a mortgage
180
22.42%
Private landlord or letting agency
105
13.08%
Other social rented
89
11.08%
Social rents from council
83
10.34%
Total households: 803

Property prices in Pen-y-groes

Based on 14 recent sales, the median property price is £145,750 in Pen-y-groes area, with individual transactions ranging from £86,250 up to £268,000.

Price distribution per property type (last year)

Price distribution by property type for Pen-y-groes 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 over the last year.
TypeSalesMedian
Detached2£256,500
Semi-Detached3£148,000
Terraced9£141,000

10 years median price trend in Pen-y-groes

Ten year median sale price trend for each property type in Pen-y-groes.

All postcodes in Pen-y-groes

LL546PA

Chapel Street

LL546ET

Llwyn Fuches

LL546HJ

Ffordd-Y-Sir

LL546NP

Clynnog Road

LL546LQ

Lon Pitar

LL546RH

Rhwng Llwyni Terrace

LL546BX

Pen-y-groes

LL546PW

Tre Ddafydd

LL546PR

Bro Llwyndu

LL546RA

Mor Awel Estate

LL546HQ

Ffordd-Y-Sir

LL546BF

Allt Doli

LL546NZ

Tan Y Bont

LL546PG

Stad Tan Y Coed

LL546NS

Clynnog Road

LL546LY

Llanllyfni Road

LL546PS

Bro Llwyndu

LL546PU

Carmel Road

LL546DA

Llanllyfni Road

LL546RG

Henlon

LL546HB

Pen-y-groes

LL546NU

Baptist Street

LL546AA

King's Road

LL546PD

Pen-y-groes

LL546PF

Bryn Llwyd

LL546HE

County Road

LL546NE

Trem Y Wyddfa

LL546RF

Carmel Road

LL546EY

County Road

LL546NY

Ffordd Haearn Bach

LL546PN

Caernarfon Road

LL546RE

Llwyndu Road

LL546NW

Station Road

LL546PP

Caernarfon Road

LL546HD

Victoria Road

LL546PJ

Cae Capel Bach

LL546NX

Cross Street

LL546RN

Tyn Y Weirglodd

LL546RW

Maes Dulyn

LL546ES

County Road

LL546NR

West End Road

LL546NN

Market Place

LL546LW

Water Street

LL546SD

Penbryn

LL546PH

Allt Doli

LL546LR

Water Street

LL546ND

Trem Y Wyddfa

LL546NG

Snowdon Street

LL546PL

High Street

LL546PB

Clynnog Road

LL546RL

Kings Road

LL546NT

Ffordd Clynnog

LL546LP

Water Street

LL546PE

Clynnog Road

LL546DB

Penygroes Industrial Estate

LL546NH

Lon Yr Eglwys

LL546TU

Cae Catrin

Data Sources

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