SA18 3UY

Llandybie · Carmarthenshire · Wales

Updated September 2026

Compare this postcode

Location overview

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Post town
Ammanford
Local authority
Carmarthenshire
Constituency
Caerfyrddin
Postcode district
SA18
Postcode sector
SA18 3

Nearby postcodes

Nearby postcode distances
Postcode Distance
SA18 3YU 127 m
SA18 3YN 129 m
SA18 3US 157 m
SA18 3UU 158 m
SA18 3YT 184 m
Complete postcode fields and official codes
Postcode
SA18 3UY
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
SA
Postcode district
SA18
Postcode sector
SA18 3
Latitude
51.815954
Longitude
-4.007214
British National Grid easting
261,740
British National Grid northing
214,941

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Carmarthenshire · W06000010
Electoral ward
Llandybie · W05001204
Parish or community
W04000515
Westminster constituency
Caerfyrddin · W07000087
Output area
W00003669
Lower layer super output area
Carmarthenshire 011B · W01000681
Middle layer super output area
Carmarthenshire 011 · W02000152

Postcode source versions

Explore SA18

3 recorded sales at this postcode
Address Date Price
19, Heol Marlais, Llandybie, Ammanford, SA18 3UY 23 May 2016 £72,000
1, Heol Marlais, Llandybie, Ammanford, SA18 3UY 15 June 2007 £68,000
19, Heol Marlais, Llandybie, Ammanford, SA18 3UY 18 March 2000 £19,800

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
11
Primary
0
Secondary
0
  1. Llandybie Primary

    Welsh establishment

    871 m
  2. Ysgol Gynradd Blaenau

    Welsh establishment

    1.6 km
  3. Ysgol Dyffryn Aman

    Welsh establishment

    2.7 km

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
162
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 85
  • Criminal damage and arson 19
  • Anti social behaviour 12
  • Other theft 9
  • Public order 9

Census 2021

Population and age profile

Postcode residents
49

25 female, 24 male

Postcode households
25
Residents per household
2.0
SA18 3 residents
10,937

Age bands in SA18 3

Wider postcode sector
Age 0 to 14
16.1%

1,789 residents

Age 15 to 24
10.3%

1,145 residents

Age 25 to 44
21.7%

2,417 residents

Age 45 to 64
27%

3,007 residents

Age 65 and over
24.9%

2,771 residents

This postcode contained 0.4% of the sector's usual residents on Census Day. The age profile describes the wider SA18 3 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+
0%
Ultrafast, 300 Mbit/s+
0%
Gigabit-capable
0%
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

3

within 5 km

  • BRYNTEG SURGERY

    BRYNMAWR AVENUE, AMMANFORD, SA18 2DA

    ODS code W92036

    2.4 km

  • MARGARET STREET PRACTICE

    MARGARET STREET, AMMANFORD, SA18 2PJ

    ODS code W92040

    2.7 km

  • MEDDYGFA PENYGROES

    BRIDGE STREET, PENYGROES, LLANELLI, SA14 7RP

    ODS code W92051

    3.5 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 2026-09-05. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Heol Marlais

    BCT · Llandybie

    0.0 miles
  • Llandybie Rugby Club

    BCT · Llandybie

    0.1 miles
  • Llandybie Rugby Club

    BCT · Llandybie

    0.1 miles
  • Woodfield Road

    BCT · Llandybie

    0.1 miles
  • Woodfield Road

    BCT · Llandybie

    0.1 miles

Evidence in context

Schools

11 open schools are in scope, including 0 primary and 0 secondary schools. Llandybie Primary is the nearest published school at 871 m.

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

Recorded crime

162 published events cover 12 months, averaging 13.5 events per published month. The largest recorded category is Violence and sexual offences with 85 events.

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