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SA1 4AG

Castle · Swansea · Wales

Updated September 2026

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Location overview

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

Nearby postcodes

Nearby postcode distances
Postcode Distance
SA1 4AP 13 m
SA1 4DG 51 m
SA1 3JA 56 m
SA1 3HZ 57 m
SA1 3JD 60 m
Complete postcode fields and official codes
Postcode
SA1 4AG
Status
Current
Introduced
1 June 2008
Terminated
Not published
Postcode area
SA
Postcode district
SA1
Postcode sector
SA1 4
Latitude
51.618189
Longitude
-3.952390
British National Grid easting
264,930
British National Grid northing
192,846

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
W00003988
Lower layer super output area
Swansea 025B · W01000745
Middle layer super output area
Swansea 025 · W02000192

Postcode source versions

Explore SA1

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

    305 m

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

    Welsh establishment

    486 m

  3. Ffynone House School Trust

    Welsh establishment

    585 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
7,235
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 2,546
  • Shoplifting 1,077
  • Public order 809
  • Anti social behaviour 629
  • Criminal damage and arson 455

Census 2021

Population and age profile

Postcode residents
25

14 female, 11 male

Postcode households
18
Residents per household
1.4
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 0.6% of the sector's usual residents on Census Day. The age profile describes the wider SA1 4 sector, not people in this individual postcode.

Small counts are adjusted for privacy, so totals can differ slightly between Census tables.

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%

Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.

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

GP practices

19

within 5 km

  • ABERTAWE MEDICAL PARTNERS

    151 ST. HELENS ROAD, SWANSEA, SA1 4DF

    ODS code W98608

    110 m

  • NICHOLL STREET MEDICAL CENTRE

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

    ODS code W98020

    162 m

  • BRUNSWICK HEALTH CENTRE

    PHILLIPS PARADE, SWANSEA, SA1 4JL

    ODS code W98024

    361 m

  • KINGSWAY SURGERY

    37 THE KINGSWAY, SWANSEA, SA1 5LF

    ODS code W98027

    554 m

  • THE GROVE MEDICAL CENTRE

    6 UPLANDS TERRACE, UPLANDS, SWANSEA, SA2 0GU

    ODS code W98023

    942 m

  • UPLANDS & MUMBLES SURGERY

    46-48 SKETTY ROAD, SWANSEA, SA2 0LJ

    ODS code W98049

    1.2 km

  • MAYHILL SURGERY

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

    ODS code W98015

    1.5 km

  • CWMFELIN MEDICAL CENTRE

    298 CARMARTHEN ROAD, SWANSEA, SA1 1HW

    ODS code W98003

    1.8 km

  • HARBOURSIDE HEALTH CENTRE

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

    ODS code W98056

    1.9 km

  • THE BEACON CENTRE FOR HEALTH

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

    ODS code W98057

    1.9 km

  • UNIVERSITY HEALTH CENTRE

    PENMAEN RESIDENCES, SINGLETON PARK, SWANSEA, SA2 8PG

    ODS code W98053

    2.2 km

  • SKETTY & KILLAY MEDICAL CENTRE

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

    ODS code W98021

    2.3 km

  • MANSELTON SURGERY

    ELGIN STREET, MANSELTON, SWANSEA, SA5 8QE

    ODS code W98043

    2.3 km

  • ST. THOMAS SURGERY

    YSGOL STREET, PORT TENNANT, SWANSEA, SA1 8LH

    ODS code W98016

    2.5 km

  • BRYNHYFRYD MEDICAL CENTRE

    499 LLANGYFELACH ROAD, BRYNHYFRYD, SWANSEA, SA5 9EA

    ODS code W98004

    3.0 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

    3.7 km

  • CLASE SURGERY

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

    ODS code W98039

    4.7 km

Main GP practices only; branch surgeries are excluded. Distances are straight-line. Contact the practice to check registration, services, opening hours and appointments.

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

Nearby transport

  • Masonic

    BCT · Swansea

    0.1 miles

  • Argyle Street

    BCT · Swansea

    0.1 miles

  • YMCA

    BCT · Swansea

    0.1 miles

  • Brunel Court

    BCT · Swansea

    0.1 miles

  • St George Hotel 1

    BCT · Swansea

    0.2 miles

Evidence in context

Schools

38 open schools are in scope, including 0 primary and 0 secondary schools. St Helen's Primary School is the nearest published school at 305 m.

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

Recorded crime

7,235 published events cover 12 months, averaging 602.917 events per published month. The largest recorded category is Violence and sexual offences with 2,546 events.

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