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Glaslyn

Interactive map displaying Glaslyn

About

Glaslyn ward lies within the Porthmadog community in Gwynedd, situated between the waters of the Glaslyn River estuary and Tremadog Bay. The area encompasses the town of Porthmadog itself, which developed around its historic harbour. This location places it at the coastal gateway to the Snowdonia National Park, with the peaks of the Moelwynion range visible inland.

The ward's landscape is defined by the expansive, low-lying Traeth Mawr estuary, once a tidal inlet before the construction of the Cob embankment. This nineteenth-century causeway, carrying a road and the Ffestiniog Railway, permanently altered the hydrology and created the fertile Glaslyn Marshes. The harbour area, with its distinctive slate-built warehouses, speaks directly to its past role in the regional slate trade.

Area overview

On average Glaslyn has moderate deprivation and moderate crime levels, with around 74 crimes per 1,000 residents per year. Approximately 14.1% of homes in this area are social housing provided by a local council or housing association. The average income per household in Glaslyn is £42,768 per year. Glaslyn is home to around 1,633 people, with a population density of about 12.3 per km2.

Crime rate
4/10
Crimes per 1k residents
74
Deprivation level
4/10
Income level
5/10
Social housing
14.1%
Connectivity
N/A

Area Profile

Glaslyn Population
1,633
Population density
12.3 per km²

Crime

Crime per 1,000 population

Violence and sexual offences
48.99(+34%)
Anti-social behaviour
21.43(+48%)
Public order
6.74(-25%)
Criminal damage and arson
6.74(-17%)
Other theft
4.29(-15%)
Wales average

Demographics

Ethnic groups

British
1,539
94.24%
Other White
48
2.94%
Irish
13
0.8%
White and Asian (mixed)
9
0.55%
Other Mixed or Multiple ethnic groups
7
0.43%
Total population: 1,633

Economics

Education (age 16+)

Level 4 qualifications or above
494
36.3%
Level 3 (A level)
242
17.78%
No qualifications
207
15.21%
Level 2 (GCSEs 9-4)
189
13.89%
Level 1 (GCSEs 3-1)
111
8.16%
Total 16+ residents: 1,361

Housing

Housing tenure

Owns outright
365
47.16%
Other social rented
133
17.18%
Owns with a mortgage
126
16.28%
Private landlord or letting agency
74
9.56%
Social rents from council
40
5.17%
Total households: 774

Property prices in Glaslyn

Based on 15 recent sales, the median property price is £212,500 in Glaslyn area, with individual transactions ranging from £71,000 up to £525,000.

Price distribution per property type (last year)

Price distribution by property type for Glaslyn 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 Glaslyn over the last year.
TypeSalesMedian
Detached5£335,000
Semi-Detached2£185,000
Terraced8£197,500

10 years median price trend in Glaslyn

Ten year median sale price trend for each property type in Glaslyn.

All postcodes in Glaslyn

LL486HR

Glaslyn

LL486SN

Glaslyn

LL499TA

Penrhiw Terrace

LL499SW

Tan Y Bryn Terrace

LL554YW

Oberon Woods

LL499PS

Church Street

LL486BJ

Morfa Gaseg

LL554YA

Church Street

LL554YD

Dolfair

LL499PT

Isgraig

LL499RG

Tan Y Graig

LL486DZ

Garreg Frech

LL499TF

Glaslyn

LL554YL

Stryd Yr Eglwys

LL486DQ

Glaslyn

LL499RW

Glanmorfa Terrace

LL486SS

Cwmorthin Road

LL499PU

Isgraig

LL499RD

High Street

LL554NF

Old Tanrhiw

LL554NS

Glaslyn

LL554UU

Glaslyn

LL554YF

Stryd Yr Eglwys

LL486SW

Garreg Frech

LL499TB

Stepiau

LL554NE

Stryd Gwynant

LL499AQ

Dublin Street

LL486SP

Glaslyn

LL486LJ

Glaslyn

LL486SF

Glaslyn

LL499SS

London Terrace

LL499TE

Glaslyn

LL554NB

Meirion Terrace

LL554UY

Caernarfon Road

LL554YE

Glaslyn

LL486DU

Garreg Frech

LL486DY

Garreg Frech

LL486SH

Garreg Frech

LL499RA

Church Street

LL554YH

Peniel Terrace

LL486BZ

Garreg Frech

LL486LQ

Glaslyn

LL486SE

Glaslyn

LL554YG

Bryn Ffynnon

LL554YJ

Cae Morys

LL499RH

Dublin Street

LL499TG

Craig Madog

LL486AX

Garreg Frech

LL499SN

High Street

LL554LU

Gwynant Street

LL554NW

Glaslyn

LL486BX

Garreg Frech

LL486LZ

Glaslyn

LL486DR

Glaslyn

LL486ST

Garreg Frech

LL554YN

Garreg Frech

LL499SP

Glaslyn

LL554LY

Gwynant Street

LL554YQ

Glaslyn

LL486AZ

Glaslyn

LL499SR

Glaslyn Cottages

LL554NG

Stryd Gwynant

LL554YB

Stryd Yr Eglwys

LL486LX

Garreg Frech

LL499RE

Factory Place

LL499RL

Sunnyside

LL554NJ

Adwyr Nant

LL486RU

Maes-Y-Garth

LL554LT

Smith Street

LL486SG

Tanlan

LL499RF

High Street

LL554NA

Sygun Terrace

LL554NT

Glaslyn

LL554NR

Glaslyn

LL486BQ

Morfa Gaseg

LL554ND

Club Street

LL499TD

Glaslyn

LL486AQ

Glaslyn

LL499ST

Bryn Eglwys

LL486BH

Morfa Gaseg

LL554NL

Cwmorthin Road

LL499SY

Tandderwen Terrace

LL499BJ

Glaslyn

LL486AJ

Glaslyn

LL519BQ

High Street

LL554NH

Bryn Dinas

LL486SR

Chapel Street

LL499RN

Dublin Street

LL499PY

Craig Madog

LL486DX

Glaslyn

LL499RB

Market Square

LL486DJ

Glaslyn

LL499SU

Glaslyn

LL554NQ

Glaslyn

Data Sources

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