Area360 logo

Find postcode

Porthmadog

Interactive map displaying Porthmadog

About

Porthmadog sits on the Glaslyn estuary on the coast of Gwynedd, where a harbour and quays were built to serve the 19th-century slate trade. The town grew around maritime and railway links; a raised embankment known as the Cob holds back Traeth Mawr, creating reclaimed land and a straight causeway toward Black Rock Sands. The harbour front retains workshops, slipways and warehouses that reflect its role as an export port, with the river channel curving toward the sea and mudflats and salt marshes at low tide.

Steam trains of the narrow-gauge Ffestiniog Railway begin at Porthmadog Harbour and climb into the hills toward former slate quarries, crossing timber viaducts and passing through small stations. The town functions as a local service centre for surrounding villages and as a gateway for coastal paths and estuary walks; fishing boats, yachts and working craft share space with heritage vessels. Seasonal birdlife uses the mudflats and channels, and tidal patterns shape shoreline access and local marshalling of boats.

Area overview

On average Porthmadog has moderate deprivation and moderate crime levels, with around 68 crimes per 1,000 residents per year. Approximately 12.1% of homes in this area are social housing provided by a local council or housing association. The average income per household in Porthmadog is £42,768 per year. Porthmadog is home to around 6,660 people, with a population density of about 28.5 per km2.

Crime rate
6/10
Crimes per 1k residents
68
Deprivation level
4/10
Income level
5/10
Social housing
12.1%
Connectivity
N/A

Area Profile

Porthmadog Population
6,660
Population density
28.5 per km²

Crime

Crime per 1,000 population

Violence and sexual offences
40.99(+12%)
Anti-social behaviour
20.57(+42%)
Public order
7.66(-14%)
Shoplifting
7.06(+2%)
Criminal damage and arson
6.91(-14%)
Wales average

Demographics

Ethnic groups

British
6,326
94.98%
Other White
150
2.25%
Irish
27
0.41%
White and Asian (mixed)
25
0.38%
Other Asian
23
0.35%
Total population: 6,660

Economics

Education (age 16+)

Level 4+ (Degree)
1,893
33.6%
Level 3 (A level)
934
16.58%
No qualifications
929
16.49%
Level 2 (GCSEs 9-4)
840
14.91%
Level 1 (GCSEs 3-1)
451
8%
Total 16+ residents: 5,634

Housing

Housing tenure

Owns outright
1,558
50.88%
Owns with a mortgage
574
18.75%
Private landlord or letting agency
343
11.2%
Other social rented
318
10.39%
Other forms of private rent
136
4.44%
Total households: 3,062

Property prices in Porthmadog

Based on 66 recent sales, the median property price is £226,500 in Porthmadog area, with individual transactions ranging from £54,000 up to £554,000.

Price distribution per property type (last year)

Price distribution by property type for Porthmadog 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 Porthmadog over the last year.
TypeSalesMedian
Detached26£290,000
Flats5£162,500
Semi-Detached5£190,000
Terraced30£181,000

10 years median price trend in Porthmadog

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

All postcodes in Porthmadog

LL499BF

Dwyrain Porthmadog

LL499EA

Madoc Street West

LL499SN

High Street

LL554LU

Gwynant Street

LL554NW

Glaslyn

LL486BX

Garreg Frech

LL486LZ

Glaslyn

LL520PY

Bryn Tyddyn

LL486DR

Glaslyn

LL486ST

Garreg Frech

LL499HR

Maes Gerddi

LL499PW

Pensyflog

LL519NZ

London Road

LL519RJ

Dolbenmaen

LL486DN

Railway Terrace

LL486PW

High Street

LL499AJ

Oakley Wharf

LL519SZ

Dolbenmaen

LL554YN

Garreg Frech

LL486BG

Cae Mawr

LL486NB

Pool Street

LL499AA

Bank Place

LL499SP

Glaslyn

LL554LY

Gwynant Street

LL486DT

Penrhyndeudraeth

LL486NW

Bryn Heulwen

LL499AE

High Street

LL499BL

Marine Terrace

LL499DY

Pensyflog

LL554YQ

Glaslyn

LL486AZ

Glaslyn

LL486BB

Bryn Islwyn

LL499NE

South Snowdon Wharf

LL499RR

Bron Alltwen

LL499SR

Glaslyn Cottages

LL499TS

Ivy Terrace

LL499TW

Garth Road

LL554NG

Stryd Gwynant

LL554YB

Stryd Yr Eglwys

LL486DF

High Street

LL486LX

Garreg Frech

LL486PN

Tanybryn

LL486RW

Penrhyndeudraeth

LL499BG

Garth Road

LL499RE

Factory Place

LL499RL

Sunnyside

LL499SE

Tan Rhiw

LL519NX

Bro Pedr Fardd

LL554NJ

Adwyr Nant

LL486LE

Griffin Industrial Estate

LL486RU

Maes-Y-Garth

LL554LT

Smith Street

LL486PP

Bryn Saethon

LL486RB

Bryn Meurig

LL486SG

Tanlan

LL499LP

Gorllewin Porthmadog

LL499RF

High Street

LL499SG

Hen Ffordd

LL520RD

Lon Tabor

LL554NA

Sygun Terrace

LL554NT

Glaslyn

LL486BE

Cae Mawr

LL486RD

Ffridd Uchaf

LL486RH

Penrhyndeudraeth

LL519TZ

Dolbenmaen

LL554NR

Glaslyn

LL499DD

Garden Place

LL499YS

Cefn Y Gader

LL519RZ

Dolbenmaen

LL520PT

New Street

LL486BQ

Morfa Gaseg

LL499AD

Gorllewin Porthmadog

LL499EW

Hughendon Cottages

LL499LD

Pensyflog

LL499PP

Heol-Y-Wyddfa

LL554ND

Club Street

LL486DP

Bwlch Goleu

LL499RT

Hen Ffordd

LL486PG

Blaen Ddol

LL499TD

Glaslyn

LL499YL

Ffordd Porthmadog

LL499ZP

Penamser Road

LL520PE

Bryn Tyddyn

LL486AQ

Glaslyn

LL486LH

Penrhyndeudraeth

LL499NU

High Street

LL499ST

Bryn Eglwys

LL499UB

Mersey Street

LL499UD

Glyn Terrace

LL499YW

Ffordd Morfa Bychan

LL499BT

Snowdon Street

LL499HF

Penamser Road

LL499HY

Meadow Drive

LL499JN

Dwyrain Porthmadog

LL499LU

Gorllewin Porthmadog

LL499PD

Tuhwnt-Ir-Bwlch

LL486BH

Morfa Gaseg

LL486NH

Pant Heulog

LL486RE

Bryn Ffynnon

LL499JA

Cefn Y Gader

Data Sources

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