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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 average deprivation and low crime levels, with around 50 crimes per 1,000 residents per year, about 42% below the Wales average of 86 per 1,000. 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
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
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

Median price£151,000
Price per sq ft£186
Sales (last 12 months)64
Typical range (middle 50%)£115K – £199K

Based on 64 recent sales, the median property price is £151,000 (about £186 per square foot) in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle area, with individual transactions ranging from £50,000 up to £760,000.

Prices by property typelast 12 months

Median sale price, median price per square foot, sales count, and percentile information for each property type in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle over the last year.
TypeSalesMedian£/sq ft
Detached16£283,750£229
Semi-Detached14£166,250£188
Terraced34£119,500£174

10-year price trendmedian sale price in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle

Sale price

Ten year median sale price trend for each property type in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle.
YearDetachedSemi-DetachedTerraced
2016£208,750£115,000£82,500
2017£207,500£145,000£85,000
2018£210,000£133,000£81,000
2019£182,750£133,000£94,000
2020£189,950£180,500£105,000
2021£225,000£141,500£115,750
2022£285,000£167,500£140,000
2023£274,000£172,000£128,500
2024£240,000£187,000£135,000
2025£310,250£165,500£125,000
2026£230,000£135,000£120,000
Ten year median sale price trend for each property type in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle.

Price per sq ft

Ten year median sale price per square foot trend for each property type in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle.
YearDetachedSemi-DetachedTerraced
2016£134£143£115
2017£173£155£111
2018£168£131£114
2019£182£132£122
2020£202£182£136
2021£191£207£146
2022£231£175£176
2023£190£186£182
2024£264£200£159
2025£218£186£174
2026£235£163£168
Ten year median sale price per square foot trend for each property type in Pen-y-groes, Tal-y-sarn & Dyffryn Nantlle.

Price distribution by property typelast 12 months

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

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

LL545EU

Clynnog

LL546AH

Bryn Hyfryd Terrace

LL546LY

Llanllyfni Road

LL545TW

Snowden View

LL546DL

Ffordd Nasareth

LL547AG

Lon y Bryn

LL546LP

Water Street

LL546NP

Clynnog Road

LL547DY

Bryn Iago

LL547TF

Y Groeslon

LL547DL

Lon Cefn Gosen

LL546AR

Bryncelyn Road

LL545EH

Clynnog

LL547DH

Ffordd Iago

LL546BP

Victoria Terrace

LL545BT

Bro Celyn

LL547RD

Lon Y Buarth

LL546DF

Ffordd Rhedyw

LL545SU

Caerllwyn Cottages

LL545LL

Beddgwenan Estate

LL545PG

Clynnog

LL547AN

Lon Bron Arfon

LL547SN

Tryfan

LL546NW

Station Road

LL547TB

Bryn Glas

LL547RS

Maeshyfryd

LL545EJ

Stad Bron Heulog

LL547TG

Rathbone Terrace

LL546RE

Llwyndu Road

LL547SP

Tryfan

LL546DR

Ffordd Cae Duon

LL546EB

Clynnog

LL546PH

Allt Doli

LL545NH

Clynnog

LL547ST

Lon Newydd

LL546LA

Sea View Terrace

LL546HU

Rhiwlas Road

LL545SY

School Cottages

LL547PY

Tryfan

LL547DD

Y Groeslon

LL547AA

Lon Batus

LL545PH

Sportsman Row

LL546HW

Llanllyfni

LL546ED

Ffordd Y Llyn

LL545EY

Clynnog

LL547TS

Lon Llainffynnon

LL546DJ

Ger Y Llan

LL546PL

High Street

LL547UL

Y Groeslon

LL547AF

Lon Y Buarth

LL545NW

Clynnog

LL519EQ

Clynnog

LL546HN

Bryn Ffynnon

LL546SA

Llanllyfni

LL547SY

Trewen

LL547EF

Y Groeslon

LL546BT

Tan Meredydd

LL546NS

Clynnog Road

LL546EL

Glanrafon Terrace

LL546PE

Clynnog Road

LL546AN

Llanllyfni

LL547SL

Tryfan

LL545NR

Yr Allt

LL545EG

Lon Y Wig

LL545DF

Clynnog

LL545TR

Tyn Llan Estate

LL546AZ

Llanllyfni

LL545TF

Y Groeslon

LL545EW

Ffordd Caergybi

LL547EE

Y Groeslon

LL547TL

Dyffryn Terrace

LL547BA

Bryn Twrog Terrace

LL546SN

Rhedyw Road

LL547RY

Tryfan

LL547UA

Brynteg

LL547TR

Lon Llainffynnon

LL546RS

Lon Ddwr

LL547ED

Y Groeslon

LL546SY

Clynnog

LL547BD

Tryfan

LL546PN

Caernarfon Road

LL547AL

Glandwr

LL547RU

Tryfan

LL547AU

Tryfan

LL545TN

Y Groeslon

LL547RB

Glan Dwr

LL545NS

Clynnog

LL545ED

Clynnog Road

LL545DL

Clynnog

LL545NG

Clynnog

LL546AU

Bro Silyn

LL547TN

Dol Elen

LL546HH

Hyfrydle Terrace

LL546PF

Bryn Llwyd

LL545BU

Llwyn Y Ne

LL546AS

Bryn Derwen Terrace

LL546BA

Beatrice Square

LL547TW

Caesarn

LL546DT

Ffordd Cae Duon

LL519DX

Clynnog

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.