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Seiriol

About

Seiriol ward occupies the north-eastern peninsula of Anglesey, encompassing the town of Amlwch and its surrounding coastal and rural landscapes. The area is defined by its industrial heritage and dramatic coastline, with the large port of Amlwch historically central to the region's copper mining trade. Inland, the terrain consists of open farmland and smaller settlements, creating a mix of maritime and agricultural environments.

The coastline features rugged cliffs and the notable Amlwch Port, which was once one of the world's largest copper ore exporting harbours. Remnants of this past, including the distinctive copper kingdom centre, are integrated into the local landscape. The ward extends to include the rural community of Llanfechell and stretches towards the north-east tip of the island, marked by working farmland and quiet coastal paths.

Area overview

On average Seiriol has moderate deprivation and very low crime levels, with around 46 crimes per 1,000 residents per year. Approximately 9.0% of homes in this area are social housing provided by a local council or housing association. The average income per household in Seiriol is £45,901 per year. Seiriol is home to around 5,679 people, with a population density of about 107.8 per km2.

Crime rate

2/10

Crimes per 1k residents

Deprivation level

4/10

Income level

7/10

Connectivity

N/A

Area Profile

Seiriol Population

5,679

Population density

107.8 per km²

Crime

Violence and sexual offences

29.41(-20%)

Anti-social behaviour

10.04(-31%)

Public order

5.11(-43%)

Criminal damage and arson

3.7(-54%)

Other theft

3.7(-27%)

Wales average

Demographics

British

5,431

95.65%

Other White

111

1.95%

Irish

0.42%

Other Mixed or Multiple ethnic groups

0.32%

White and Black Caribbean (mixed)

0.32%

Total population: 5,678

Economics

Level 4 qualifications or above

2,098

42.92%

Level 3 (A level)

752

15.38%

Level 2 (GCSEs 9-4)

671

13.73%

No qualifications

660

13.5%

Level 1 (GCSEs 3-1)

317

6.49%

Total 16+ residents: 4,888

Housing

Owns outright

1,408

53.39%

Owns with a mortgage

545

20.67%

Private landlord or letting agency

290

11%

Social rents from council

261

9.9%

Other forms of private rent

2.77%

Total households: 2,637

Property prices in Seiriol

Based on 44 recent sales, the median property price is £308,750 in Seiriol area, with individual transactions ranging from £130,000 up to £749,550.

Price distribution per property type (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 Seiriol over the last year.
Type	Sales	Median	5th percentile	25th percentile (Lower quartile)	75th percentile (Upper quartile)	95th percentile
Detached	23	£395,000	£234,995	£316,250	£555,000	£690,750
Flats	1	£240,000	£240,000	£240,000	£240,000	£240,000
Semi-Detached	3	£235,000	£140,500	£182,500	£270,000	£298,000
Terraced	17	£215,000	£161,700	£190,000	£280,000	£477,910

10 years median price trend in Seiriol

All postcodes in Seiriol

LL588NS

Haulfre Cottages

LL588TP

Maesgwyn

LL588UE

Seiriol

LL588RF

Bryn Hyfryd

LL595PA

Ffordd Beaumaris

LL595TL

Lon Ganol

LL595TU

Lon Ganol

LL588AU

Bulkeley Terrace

LL588DY

Steeple Lane

LL588EF

Bryn Lane

LL588LU

Seiriol

LL588YA

Lon Goch

LL588AF

Rating Row

LL588DN

Margaret Street

LL588NA

Tawelfan

LL588EG

New Street

LL588SF

Seiriol

LL588SN

Penyfron Terrace

LL588SR

Seiriol

LL588TA

Seiriol

LL595UP

Bro Llewelyn

LL595UR

Trem Arfon

LL588NY

Seiriol

LL595SD

Ffordd Pentraeth

LL588UG

Seiriol

LL595NT

Lon Bryn Teg

LL595PD

Allt Bryn Mel

LL588PB

Tyddyn Waen Terrace

LL588SB

Seiriol

LL595SF

Lon Fferam Uchaf

LL588AQ

Wern Farm Estate

LL588BY

Green Edge

LL588DU

Rosemary Lane

LL588YP

Allt Goch Fawr

LL588BD

West End

LL588LT

Bryn Paun

LL595PP

Bryn Cottages

LL595PS

Maes Y Ffynnon

LL588DB

Little Lane

LL588EN

Rose Hill

LL588NL

Menai View Terrace

LL588RR

Seiriol

LL595TF

Maes Awel

LL595TG

Bryn Awelon

LL588NP

Seiriol

LL588TT

Maes Gwyn

LL588YN

Cae Mair

LL595TA

Allt Cichle

LL595YA

Bryn Iorwerth Terrace

LL588BQ

Seiriol

LL588HU

Henllys Lane

LL588PE

Arfon Terrace

LL595PY

Lon Ganol

LL595SL

Maes Hafodty

LL588BG

West End

LL588BL

Mill Lane

LL588RP

Menai Lighthouse Cottage

LL588SP

Seiriol

LL588ST

Brynteg

LL588SY

Seiriol

LL588YH

Seiriol

LL588DP

Castle Row

LL588LR

Seiriol

LL588TB

Seiriol

LL588EH

New Street

LL588BT

Seiriol

LL588PD

Seiriol

LL588SL

Coedwig Terrace

LL588TL

Lôn Cae Mawr

LL588NN

Mona Terrace

LL588SE

Seiriol

LL588TU

Seiriol

LL588UT

Allt Bron-Philip

LL588YU

Allt Goch Bach

LL588AL

Cadnant Court

LL588PS

Lôn Cae Mawr

LL595UA

Lon Ganol

LL595UD

Lon Ganol

LL588AB

Church Street

LL588UR

Allt Bron-Philip

LL588YB

Seiriol

LL588BA

Castle Street

LL588HB

Thomas Close

LL588NU

Pont Y Rhyd

LL588NW

Penynant

LL588PL

Seiriol

LL588PP

Lôn Cae Mawr

LL588UB

Seiriol

LL588SD

Seiriol

LL595PB

Glyn Garth Court

LL588HG

Thomas Close

LL588HW

Wexham Street

LL588RY

Seiriol

LL595UT

Ffordd Yr Eglwys

LL588EW

Gaol Street

LL588NB

Seiriol

LL588NE

Seiriol

LL588PG

Seiriol

LL588UW

Seiriol

LL595NN

Cadnant Road

Data Sources

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

HM Land Registry • Police.uk • DfE • ONS • TfL • National Rail

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Seiriol

Interactive map displaying Seiriol

About

Area overview

Area Profile

Crime

Crime per 1,000 population

Demographics

Ethnic groups

Economics

Education (age 16+)

Housing

Housing tenure

Property prices in Seiriol

All postcodes in Seiriol

Data Sources