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 None deprivation and high crime levels, with around 73 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
7/10
Crimes per 1k residents
73
Deprivation level
N/A
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
41.74(+23%)
Anti-social behaviour
20.57(+58%)
Public order
9.01(+10%)
Shoplifting
8.56(+33%)
Criminal damage and arson
8.26(+13%)
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 69 recent sales, the median property price is £220,000 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
Detached25£282,500
Terraced34£188,750
Semi-Detached7£190,000
Flats3£150,000

10 years median price trend in Porthmadog

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

All postcodes in Porthmadog

LL499DR

Chapel Street

LL499YG

Main Drive

LL554UY

Caernarfon Road

LL499PR

Dwyrain Porthmadog

LL499TE

Glaslyn

LL554ND

Club Street

LL499YU

Tyddyn Adi

LL486DS

High Street

LL519TQ

Dolbenmaen

LL486NB

Pool Street

LL520PE

Bryn Tyddyn

LL554NJ

Adwyr Nant

LL499PY

Craig Madog

LL499HW

Church Street

LL499LP

Gorllewin Porthmadog

LL499JA

Cefn Y Gader

LL486NQ

Pant Heulog

LL499TS

Ivy Terrace

LL486DL

Rock Terrace

LL499YS

Cefn Y Gader

LL554NB

Meirion Terrace

LL499HS

Heol-Y-Wyddfa

LL499RP

Dolbenmaen

LL499DY

Pensyflog

LL486NW

Bryn Heulwen

LL499DL

Madoc Street

LL499RU

Tan Y Bryn Terrace

LL499LY

Britannia Place

LL499NN

Snowdon Place

LL554NL

Cwmorthin Road

LL486LH

Penrhyndeudraeth

LL486RA

Efail Wen

LL499SD

Railway Terrace

LL554LT

Smith Street

LL499EA

Madoc Street West

LL499RD

High Street

LL499SR

Glaslyn Cottages

LL519TZ

Dolbenmaen

LL499SW

Tan Y Bryn Terrace

LL499HU

Meadow Drive

LL499AR

Heol Y Parc

LL486DQ

Glaslyn

LL499RB

Market Square

LL519LQ

Dolbenmaen

LL499AF

Dora Street

LL499TF

Glaslyn

LL499DU

Madoc Street West

LL486NF

Capel Pant

LL499EL

East Avenue

LL520PT

New Street

LL499EJ

Glaslyn Street

LL499UU

Ffordd Morfa Bychan

LL499YE

Ffordd Morfa Bychan

LL519LJ

Dolbenmaen

LL499DF

Snowdon Street

LL519TX

Dolbenmaen

LL499RA

Church Street

LL486PR

Nazareth Terrace

LL499UY

Ffordd Morfa Bychan

LL554YD

Dolfair

LL499AS

Oakley Wharf

LL519TJ

Dolbenmaen

LL519UJ

Dolbenmaen

LL486PN

Tanybryn

LL486RE

Bryn Ffynnon

LL486RX

Cae Mawr

LL499PQ

Heol-Y-Wyddfa

LL554YL

Stryd Yr Eglwys

LL499AA

Bank Place

LL499BJ

Glaslyn

LL519EX

Lon Goed

LL499ZP

Penamser Road

LL499AT

Corn Hill

LL499TG

Craig Madog

LL499PA

Penamser Road

LL486EA

Bryniau Hendre

LL499AX

Dwyrain Porthmadog

LL519EZ

Lon Goed

LL486LX

Garreg Frech

LL499UD

Glyn Terrace

LL486DA

High Street

LL499NE

South Snowdon Wharf

LL486SE

Glaslyn

LL499UE

Tan Y Foel

LL499HX

Stryd Y Llan

LL499AQ

Dublin Street

LL499NS

Gorllewin Porthmadog

LL486NN

Sardis

LL486EB

Maes Deudraeth

LL499NA

Tan Y Graig

LL486DU

Garreg Frech

LL519YY

Dolbenmaen

LL499NG

Tros Y Bent

LL486PP

Bryn Saethon

LL554YH

Peniel Terrace

LL520PY

Bryn Tyddyn

LL486LQ

Glaslyn

LL499PP

Heol-Y-Wyddfa

LL499LA

Pensyflog

LL499NW

High Street

Data Sources

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