The UK Postcode Database

SA4 4YN

a postcode in Swansea

Introduced in January 1993
SA4 4YN Normal (geographic) postcodes Large user postcodes

The nearby postcodes map only shows currently active postcodes. Postcode markers will cluster if they are close together, which may happen in densly populated built-up areas or where single premises have multiple postcodes.

Streets Associated with SA4 4YN

Grenfell Avenue - 40 properties, USRN 39101057

Ash Grove - 1 property, USRN 39100070

Beech Crescent - 1 property, USRN 39100121

Elm Grove - 1 property, USRN 39100792

Street names are those nearest to properties in this postcode, they are not necessarily the postal address

Coordinates

Latitude: 51.676 / 51°40'33"N

Longitude: -4.051 / 4°3'3"W

UTM Reference: 30U 427331 5725526

OS Easting: 258286

OS Northing: 199462

OS Grid: SS582994

Location Encoding

Mapcode Local: GBR GW.8FJT

Mapcode Global: VH4K1.Q4SJ

Open Location Code: 9C3QMWGX+9J

Maidenhead Locator System: IO71xq32

Demographics

Urban/Rural Indicator: C1

  • urban city or town
  • a town or city, surrounded by populated countryside

ONS Population Classification: 7a2

  • Semi- and Un-Skilled Workforce
  • Established but Challenged
  • Industry Associations

Index of Multiple Deprivation (IMD): 305 / 1909

  • 2nd decile
  • much more deprived

Demographics are based on the LSOA containing this postcode and not necessarily this postcode alone

Sun and Moon Times for SA4 4YN on Wednesday 1 July 2026

Nautical twilight begins (First light) 03:01
Civil twilight begins (Dawn) 04:15
Sunrise 05:02
Transit (sun is at its highest) 13:20
Sunset 21:37
Civil twilight ends (Dusk) 22:25
Nautical twilight ends (Nightfall) 23:38
Hours of daylight today04:32 to 22:07
Hours of darkness tonight
(lighting-up time)
22:07 to 04:33
Moon Phase Waning Gibbous
Moon Sets 04:55
Moon Rises 21:58

For a full sun and moon calendar for SA4 4YN, go to The Time and Place

Residential Property Sales in SA4 4YN

DateAddressProperty TypeTenurePrice
26 April 2024 12 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £220,000
29 February 2024 36 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Other property type Freehold £153,000
14 February 2022 35 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £147,000
12 November 2021 18 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £90,000
8 January 2021 36 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £115,000
17 July 2020 15 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £120,000
24 January 2020 28 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £107,000
18 January 2019 36 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £94,000
11 January 2019 15 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £87,000
17 November 2016 15 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £77,000
31 May 2013 30 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £95,000
9 March 2012 25 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £83,500
10 August 2007 40 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Terraced (including end-of-terrace) Freehold £68,000
26 September 2005 30 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Terraced (including end-of-terrace) Freehold £54,000
1 November 2004 25 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £35,000
5 September 2003 36 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £46,400
11 May 2001 35 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £27,000
22 October 1999 34 Grenfell Avenue, Gorseinon, Swansea SA4 4YN Semi-detached Freehold £34,000

Key to property sale icons:

First sale of newbuild property. This includes new properties created from existing properties, such as residential conversions of commercial or agricultural property, or subdivision of a larger residential property.
Subsequent sale of existing property.
Standard sale at market value to private individual.
Additional (non-standard) sale. This includes repossessions, buy-to-lets and transfers of property sold to non-private individuals.

Elected Representatives for SA4 4YN

United Kingdom Parliament
Constituency

Gower

MP

Tonia Antoniazzi Labour

Senedd
Constituency

Gower

Senedd Member

Rebecca Evans Welsh Labour

Region

South Wales West

Senedd Members

Luke Fletcher Plaid Cymru

Tom Giffard Welsh Conservative Party

Altaf Hussain Welsh Conservative Party

Sioned Williams Plaid Cymru

Swansea Council
Unitary Authority electoral division (UTE)

Gorseinon and Penyrheol

Councillors

Jan Curtice Labour

Nicola Matthews Labour

Andrew Stevens Labour

Elected representative data is updated approximately monthly, so may not include recent by-elections or vacancies.

Government Statistical Services (GSS) data for SA4 4YN

CodeNameData TypeData ThemeActive SinceData Owner
W00004508 Output Areas Statistical Building Block 1 January 2009 ONS
W01000844 Swansea 005F Lower layer Super Output Areas Statistical Building Block 1 February 2004 ONS
W02000172 Swansea 005 Middle layer Super Output Areas Statistical Building Block 1 August 2004 ONS
W04000964 Gorseinon Communities Administrative 1 April 2012 WG (LGBC)
W05001047 Gorseinon and Penyrheol Electoral Wards Administrative/Electoral 5 May 2022 WG (LGBC)
W06000011 Swansea Unitary Authorities Administrative 1 January 2009 WG (LGBC)
W07000097 Gower Westminster Parliamentary Constituencies Electoral 4 July 2024 WG (BC)
W09000018 Gower Senedd Constituencies Electoral 1 January 2009 WG (BC)
W10000009 South Wales West Senedd Electoral Regions Electoral 1 January 2012 WG (BC)
W11000031 Swansea Bay University Health Board Local Health Boards Health 1 April 2019 WG (Health)
W15000003 South Wales Police Force Areas Other 1 January 2009 Home Office
W16000002 South West / Mid Wales Department for Children, Education, Lifelong Learning and Skills, WG Other 1 January 2009 WG (Educ)
W22000032 Swansea Travel to Work Areas Other 31 July 2015 ONS
W31000001 Wales Non-National Park Area Wales Non-National Park Area Other 1 January 2009 WG (Envt)
W35001671 Workplace Zones Census 31 December 2011 ONS
W45001088 Gorseinon Built Up Areas Census 17 April 2024 OS
W92000004 Wales Country Administrative 1 January 2009 ONS

All public sector data is licensed under the Open Government Licence v2.0.

The UK Postcode Database is a Good Stuff website.

Page generated in 1.94 seconds. 216.73.216.44. Wed, 01 Jul 2026 20:47:42 +0100. Cretaceous Aardvark.