SA31
Postcode districtPostcode district covering Carmarthen and Johnstown, in Carmarthenshire.
Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an SA31 postcode. How census figures are added up
Gigabit coverage by postcode district
Connected Nations (Ofcom) · January 2026
In SA31, 78.3% of homes and businesses could get gigabit-capable broadband in January 2026.
How SA31 compares
Each dot is a postcode district. The black line marks the middle one.
Is SA31 safe? What police records show
In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SA31 at a rate of 155.6 per 1,000 people.
That compares with 86.6 per 1,000 people across SA.
In August 2026 alone, 233 cases of crime and anti-social behaviour were recorded in SA31.
In the 12 months to August 2026, the most common types were violence and sexual offences (1,252), other crime (483) and shoplifting (284).
A year earlier, the recorded crime rate in SA31 was 150.3 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.
Deprivation in SA31, neighbourhood by neighbourhood
- Deprivation is ranked by neighbourhood, so SA31 has no single figure. Of its 11 neighbourhoods with a rank:
- Decile 2: 1 neighbourhood
- Decile 3: 2 neighbourhoods
- Decile 5: 2 neighbourhoods
- Decile 6: 1 neighbourhood
- Decile 7: 1 neighbourhood
- Decile 8: 3 neighbourhoods
- Decile 10 (Wales’s least deprived 10%): 1 neighbourhood
Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.
Neighbourhoods in SA31
| Name | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
|---|---|---|---|---|
| Carmarthenshire 006A | 1,671 | 92.1 per 1,000 | 5 | 92.0% |
| Carmarthenshire 006B | 1,880 | 82.5 per 1,000 | 8 | 82.5% |
| Carmarthenshire 006C | 1,970 | 81.5 per 1,000 | 7 | 91.2% |
| Carmarthenshire 007A | 1,388 | 105.1 per 1,000 | 3 | 94.2% |
| Carmarthenshire 007B | 1,150 | 151.0 per 1,000 | 2 | 86.7% |
| Carmarthenshire 007C | 1,521 | 134.4 per 1,000 | 6 | 91.6% |
| Carmarthenshire 007D | 1,229 | 122.3 per 1,000 | 10 | 60.7% |
| Carmarthenshire 008A | 2,063 | 443.5 per 1,000 | 3 | 70.5% |
| Carmarthenshire 008B | 1,761 | 129.4 per 1,000 | 8 | 85.1% |
| Carmarthenshire 008C | 1,128 | 163.6 per 1,000 | 5 | 55.9% |
| Carmarthenshire 008D | 1,499 | 140.0 per 1,000 | 8 | 45.8% |
MPs for SA31
- Ann DaviesPlaid CymruMP for Caerfyrddin98% of SA31’s postcodes
- Dame Nia GriffithLabourMP for Llanelli2.1% of SA31’s postcodes
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Middle areas in SA313
Postcode sectors in SA314
Council1
Towns in SA311
Postcode districts next to SA313
Nearest rail stations1
More in the SA postcode area2
SA31 in brief
SA31 is a postcode district covering Carmarthen and Johnstown, in Carmarthenshire.
About 17,993 people lived in SA31 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £225,000 in 2025 across 248 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 155.6 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in SA31 was £225,000 in 2025.
SA31 had 17,582 usual residents at the census.
In SA31, 78.3% of homes and businesses could get gigabit-capable broadband in January 2026.
In SA31, 3.4% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.