The UK Postcode Database

SA31 3NJ

a postcode in Carmarthenshire

Introduced in March 1988
SA31 3NJ 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 SA31 3NJ

Lon Y Plas - 38 properties, USRN 47205257

Plas Penwern - 1 property, USRN 47205975

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

Coordinates

Latitude: 51.8463 / 51°50'46"N

Longitude: -4.3245 / 4°19'28"W

UTM Reference: 30U 408766 5744776

OS Easting: 239983

OS Northing: 218969

OS Grid: SN399189

Location Encoding

Mapcode Local: GBR DF.TXP5

Mapcode Global: VH3LH.0V5G

Open Location Code: 9C3QRMWG+G6

Maidenhead Locator System: IO71uu13

Demographics

Urban/Rural Indicator: C2

  • urban city or town
  • a town or city, surrounded by sparsely inhabited countryside

ONS Population Classification: 2c2

  • Suburbanites and Peri-Urbanites
  • Ageing Communities
  • Ageing Independent Living

Index of Multiple Deprivation (IMD): 1406 / 1909

  • 8th decile
  • less deprived

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

Sun and Moon Times for SA31 3NJ on Wednesday 8 July 2026

Nautical twilight begins (First light) 03:11
Civil twilight begins (Dawn) 04:21
Sunrise 05:08
Transit (sun is at its highest) 13:22
Sunset 21:36
Civil twilight ends (Dusk) 22:22
Nautical twilight ends (Nightfall) 23:33
Hours of daylight today04:38 to 22:06
Hours of darkness tonight
(lighting-up time)
22:06 to 04:39
Moon Phase Waning Crescent
Moon Sets 14:10
Moon Rises 23:39

For a full sun and moon calendar for SA31 3NJ, go to The Time and Place

Residential Property Sales in SA31 3NJ

DateAddressProperty TypeTenurePrice
22 March 2024 14 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £285,000
12 January 2024 2 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £315,000
28 November 2023 22 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £139,365
5 May 2023 1 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Other property type Freehold £270,000
5 August 2022 2 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £265,000
6 May 2021 16 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £172,000
29 January 2021 3 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £222,500
7 October 2019 7 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £199,000
11 April 2018 9 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £195,000
25 July 2017 34 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £170,000
25 November 2016 13 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £209,950
26 February 2016 11 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £148,000
16 August 2013 25 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £165,000
30 November 2012 29 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £147,500
27 July 2012 20 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £125,000
2 October 2009 9 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £175,000
11 July 2008 37 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £181,000
16 May 2007 20 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £156,000
15 December 2006 3 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £195,000
28 November 2006 13 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £165,000
18 August 2006 25 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £168,500
21 July 2006 37 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £180,000
7 April 2006 12 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £145,000
30 June 2005 35 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £183,350
11 October 2004 20 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £136,500
16 September 2002 3 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £108,000
6 August 2002 7 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £92,500
6 February 2001 26 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £72,500
22 January 2001 24 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £75,000
18 August 2000 9 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £73,000
15 October 1999 37 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £69,000
11 October 1999 30 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £70,500
2 October 1998 26 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £56,000
28 August 1998 7 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £67,000
3 June 1998 17 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £68,000
19 December 1997 32 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £56,500
31 October 1997 22 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £80,500
19 December 1996 20 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £49,000
20 October 1995 37 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £65,000
11 August 1995 28 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £68,000
28 July 1995 36 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £69,000
28 February 1995 9 Lon Y Plas, Johnstown, Carmarthen SA31 3NJ Detached Freehold £70,000

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 SA31 3NJ

United Kingdom Parliament
Constituency

Caerfyrddin

MP

Ann Davies Plaid Cymru

Senedd
Constituency

Carmarthen West and South Pembrokeshire

Senedd Member

Samuel Kurtz Welsh Conservative Party

Region

Mid and West Wales

Senedd Members

Cefin Campbell Plaid Cymru

Jane Dodds Welsh Liberal Democrats

Eluned Morgan Welsh Labour

Joyce Watson Welsh Labour

Carmarthenshire Council
Unitary Authority electoral division (UTE)

Carmarthen Town North and South

Councillors

Peter Griffiths Plaid Cymru

Gareth John Plaid Cymru

Alun Lenny Plaid Cymru

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

Government Statistical Services (GSS) data for SA31 3NJ

CodeNameData TypeData ThemeActive SinceData Owner
W00003443 Output Areas Statistical Building Block 1 January 2009 ONS
W01000642 Carmarthenshire 008B Lower layer Super Output Areas Statistical Building Block 1 February 2004 ONS
W02000149 Carmarthenshire 008 Middle layer Super Output Areas Statistical Building Block 1 August 2004 ONS
W04000494 Carmarthen Communities Administrative 1 January 2009 WG (LGBC)
W05001183 Carmarthen Town North and South Electoral Wards Administrative/Electoral 5 May 2022 WG (LGBC)
W06000010 Carmarthenshire Unitary Authorities Administrative 1 January 2009 WG (LGBC)
W07000087 Caerfyrddin Westminster Parliamentary Constituencies Electoral 4 July 2024 WG (BC)
W09000016 Carmarthen West and South Pembrokeshire Senedd Constituencies Electoral 1 January 2009 WG (BC)
W10000006 Mid and West Wales Senedd Electoral Regions Electoral 1 January 2012 WG (BC)
W11000025 Hywel Dda University Health Board Local Health Boards Health 1 October 2009 WG (Health)
W15000004 Dyfed-Powys 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)
W22000028 Llanelli 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)
W35001579 Workplace Zones Census 31 December 2011 ONS
W45000937 Carmarthen 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.

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