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SA1 4DN

Castle · Swansea · Wales

Updated September 2026

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Location overview

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Post town
Swansea
Ward
Castle
Local authority
Swansea
Constituency
Swansea West
Postcode district
SA1
Postcode sector
SA1 4

Nearby postcodes

Nearby postcode distances
Postcode Distance
SA1 4DH 0 m
SA1 4DL 0 m
SA1 4DW 0 m
SA1 4BE 43 m
SA1 3JJ 85 m
Complete postcode fields and official codes
Postcode
SA1 4DN
Status
Current
Introduced
1 April 1987
Terminated
Not published
Postcode area
SA
Postcode district
SA1
Postcode sector
SA1 4
Latitude
51.617003
Longitude
-3.956109
British National Grid easting
264,669
British National Grid northing
192,721

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Swansea · W06000011
Electoral ward
Castle · W05001041
Parish or community
W04001033
Westminster constituency
Swansea West · W07000108
Output area
W00003995
Lower layer super output area
Swansea 026A · W01000749
Middle layer super output area
Swansea 026 · W02000193

Postcode source versions

Explore SA1

Use the wider postcode district to compare the same evidence across more locations.

Property

At this postcode

View all property records
88 recorded sales at this postcode
Address Date Price
Homegower House, Flat 92, St Helens Road, Swansea, SA1 4DN 9 February 2025 £51,000
Homegower House, Flat 94, St Helens Road, Swansea, SA1 4DN 30 October 2024 £49,000
Homegower House, Flat 82, St Helens Road, Swansea, SA1 4DN 20 September 2024 £53,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
38
Primary
0
Secondary
0

  1. St Helen's Primary School

    Welsh establishment

    192 m

  2. Christchurch (C.I.W.) Voluntary Aided Primary School

    Welsh establishment

    287 m

  3. Ffynone House School Trust

    Welsh establishment

    440 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
7,005
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 2,450
  • Shoplifting 1,120
  • Public order 769
  • Anti social behaviour 597
  • Criminal damage and arson 426

Census 2021

Population and age profile

Postcode residents
34

17 female, 17 male

Postcode households
27
Residents per household
1.3
SA1 4 residents
4,447

Age bands in SA1 4

Wider postcode sector
Age 0 to 14
8%

316 residents

Age 15 to 24
45.8%

1,816 residents

Age 25 to 44
19.9%

790 residents

Age 45 to 64
13.3%

529 residents

Age 65 and over
13%

514 residents

This postcode contained 0.8% of the sector's usual residents on Census Day. The age profile describes the wider SA1 4 sector, not people in this individual postcode.

How to read these estimates
The standard postcode headcounts and the commissioned age table are separate ONS outputs. Small counts are disclosure-controlled, and totals can differ slightly between tables. Coverage is England and Wales only.

Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.

Fixed broadband coverage

Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.

Superfast, 30 Mbit/s+
100%
Ultrafast, 100 Mbit/s+
100%
Ultrafast, 300 Mbit/s+
100%
Gigabit-capable
100%
Unable to receive decent fixed or FWA broadband
0%
Next Generation Access
100%
Decent broadband available from fixed wireless
0%
Coverage is a modelled postcode-level snapshot, not a speed test or a guarantee for a named property. Check availability with providers before making a decision. Ofcom does not publish postcode-level full-fibre coverage in this release for commercial-confidentiality reasons.

Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.

NHS ODS

GP practices

19

within 5 km

  • BRUNSWICK HEALTH CENTRE

    PHILLIPS PARADE, SWANSEA, SA1 4JL

    ODS code W98024

    93 m

  • ABERTAWE MEDICAL PARTNERS

    151 ST. HELENS ROAD, SWANSEA, SA1 4DF

    ODS code W98608

    187 m

  • NICHOLL STREET MEDICAL CENTRE

    NICHOLL ST MEDICAL CENTR, 33 NICHOLL STREET, SWANSEA, SA1 4HF

    ODS code W98020

    391 m

  • THE GROVE MEDICAL CENTRE

    6 UPLANDS TERRACE, UPLANDS, SWANSEA, SA2 0GU

    ODS code W98023

    717 m

  • KINGSWAY SURGERY

    37 THE KINGSWAY, SWANSEA, SA1 5LF

    ODS code W98027

    842 m

  • UPLANDS & MUMBLES SURGERY

    46-48 SKETTY ROAD, SWANSEA, SA2 0LJ

    ODS code W98049

    1.0 km

  • MAYHILL SURGERY

    MOUNTAIN VIEW HEALTH CENTRE, 51 MAYHILL ROAD, MAYHILL, SWANSEA, SA1 6TD

    ODS code W98015

    1.7 km

  • UNIVERSITY HEALTH CENTRE

    PENMAEN RESIDENCES, SINGLETON PARK, SWANSEA, SA2 8PG

    ODS code W98053

    1.9 km

  • CWMFELIN MEDICAL CENTRE

    298 CARMARTHEN ROAD, SWANSEA, SA1 1HW

    ODS code W98003

    1.9 km

  • SKETTY & KILLAY MEDICAL CENTRE

    SKETTY SURGERY, DE LA BECHE ROAD, SKETTY, SWANSEA, SA2 9EA

    ODS code W98021

    2.0 km

  • HARBOURSIDE HEALTH CENTRE

    BEACON CENTRE FOR HEALTH, LANGDON ROAD, SWANSEA, SA1 8QY

    ODS code W98056

    2.2 km

  • THE BEACON CENTRE FOR HEALTH

    SA1 MEDICAL CENTRE, LANGDON ROAD, SWANSEA, SA1 8QY

    ODS code W98057

    2.2 km

  • MANSELTON SURGERY

    ELGIN STREET, MANSELTON, SWANSEA, SA5 8QE

    ODS code W98043

    2.5 km

  • ST. THOMAS SURGERY

    YSGOL STREET, PORT TENNANT, SWANSEA, SA1 8LH

    ODS code W98016

    2.8 km

  • BRYNHYFRYD MEDICAL CENTRE

    499 LLANGYFELACH ROAD, BRYNHYFRYD, SWANSEA, SA5 9EA

    ODS code W98004

    3.2 km

  • DR BENSUSAN & PARTNERS

    PR2 FFORESTFACH MEDICL CENTRE, RAVENHILL ROAD, RAVENHILL, SWANSEA, SA5 5AA

    ODS code W98007

    3.3 km

  • DR POWELL & PARTNERS

    PR1 FFORESTFACH MEDICAL CENTRE, RAVENHILL ROAD, RAVENHILL, SWANSEA, SA5 5AA

    ODS code W98028

    3.3 km

  • CHERITON MEDICAL CENTRE

    CHERITON CRESCENT, PORTMEAD, SWANSEA, SA5 5LA

    ODS code W98612

    3.8 km

  • CLASE SURGERY

    GREENHILL MEDICAL CENTRE, 88 MYNYDD GARNLWYD ROAD, MORRISTON, SWANSEA, SA6 7NZ

    ODS code W98039

    4.9 km

Organisation records, not service availability
These are records marked active in NHS England's Organisation Data Service for England and Wales. Branch surgeries, pharmacies, dentists and hospitals are not included. They do not confirm patient registration, services, opening hours, appointments or care quality. Distances are straight-line from the postcode point.

Source acquired on 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • St Helens Road

    BCT · Swansea

    0.0 miles

  • Beach Street

    BCT · Swansea

    0.1 miles

  • Masonic

    BCT · Swansea

    0.1 miles

  • Argyle Street

    BCT · Swansea

    0.1 miles

  • St George Hotel 2

    BCT · Swansea

    0.2 miles

Evidence in context

A factual reading of the data in this report's scope. It is not a location score or a recommendation.

Property market

Recorded sales

The five-year median is £52,000 from 10 recorded sales in SA1 4DN. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Swansea is £206,059 in June 2026, up 0.2% year on year.

Schools

Published establishments

38 open schools are in scope, including 0 primary and 0 secondary schools. St Helen's Primary School is the nearest published school at 192 m.

Counts describe active establishment records. They do not assess admissions, catchments or quality.

Recorded crime

Published police records

7,005 published events cover 12 months, averaging 583.75 events per published month. The largest recorded category is Violence and sexual offences with 2,450 events.

The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.