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Llanelli

Town

Town in Carmarthenshire, Wales.

Llanelli is an ONS built-up area: the land built up as one town, whatever council it is in. Figures for Llanelli add up the census output areas (or, for claimants, the neighbourhoods) that sit mostly inside it, so they are close to, but not exactly, the town’s own.

Open in map

Radon Affected Area by town

Worked out by Open Index · 2022

Under 1%90% or more

About 100% of people in Llanelli live in a 1 km square that the radon atlas marks as a radon Affected Area.

Median sale price
£152,944
60th cheapest of 1,092
Worked out by Open Index
Population
42,143
264th most populated of 1,209
ONS Census 2021 · 2021
People in radon Affected Area squares
100%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
94.5%
UK 87.8%
Ofcom · Jan 2026

How Llanelli compares

Each dot is a town. The black line marks the middle one.

LlanelliMiddle
Median sale price76 towns, Wales · 2025
Median sale price: every town in Wales76 areas from £120,000 to £344,000. The middle area is £194,375. Llanelli is £152,944.
£152,94413th cheapest
Population76 towns, Wales · 2021
Population: every town in Wales76 areas from 7,546 to 348,511. The middle area is 13,457. Llanelli is 42,143.
42,1438th most populated
People in radon Affected Area squares76 towns, Wales · 2022
People in radon Affected Area squares: every town in Wales76 areas from 2.0% to 100.0%. The middle area is 100.0%. Llanelli is 100.0%.
100%joint most people in radon Affected Areas
Gigabit broadband coverage76 towns, Wales · Jan 2026
Gigabit broadband coverage: every town in Wales76 areas from 55.2% to 99.0%. The middle area is 93.5%. Llanelli is 94.5%.
94.5%joint 30th highest

Is Llanelli safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Llanelli at a rate of 142.5 per 1,000 people.

That compares with 96.7 per 1,000 people across Wales.

In August 2026 alone, 477 cases of crime and anti-social behaviour were recorded in Llanelli.

In the 12 months to August 2026, the most common types were violence and sexual offences (2,520), other crime (971) and anti-social behaviour (816).

A year earlier, the recorded crime rate in Llanelli was 132.1 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 Llanelli, neighbourhood by neighbourhood

  • Deprivation is ranked by neighbourhood, so Llanelli has no single figure. Of its 26 neighbourhoods with a rank:
  • Decile 1 (Wales’s most deprived 10%): 5 neighbourhoods
  • Decile 2: 4 neighbourhoods
  • Decile 3: 5 neighbourhoods
  • Decile 4: 2 neighbourhoods
  • Decile 5: 3 neighbourhoods
  • Decile 6: 1 neighbourhood
  • Decile 7: 1 neighbourhood
  • Decile 8: 5 neighbourhoods

Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.

Neighbourhoods in Llanelli

NamePeople (census)Recorded crime per 1,000Deprivation decileGigabit broadband
Carmarthenshire 019F2,47141.0 per 1,000889.4%
Carmarthenshire 020A1,49872.4 per 1,000697.8%
Carmarthenshire 020B1,782150.7 per 1,000399.7%
Carmarthenshire 020C1,914171.0 per 1,000294.7%
Carmarthenshire 022A1,772172.6 per 1,000390.4%
Carmarthenshire 022B1,64663.7 per 1,000896.1%
Carmarthenshire 022C1,916113.6 per 1,000395.5%
Carmarthenshire 023A1,463111.2 per 1,000896.7%
Carmarthenshire 023B1,663346.5 per 1,000380.1%
Carmarthenshire 023C2,11864.1 per 1,000891.8%
Carmarthenshire 024A1,537377.8 per 1,000784.2%
Carmarthenshire 024B1,63358.9 per 1,0004100.0%
Carmarthenshire 024C1,58781.6 per 1,0005100.0%
Carmarthenshire 024D1,830145.6 per 1,000199.5%
Carmarthenshire 025A2,40253.8 per 1,000889.7%
Carmarthenshire 025B2,37278.0 per 1,000592.9%
Carmarthenshire 025C1,563153.5 per 1,000494.1%
Carmarthenshire 025D1,45361.4 per 1,000298.9%
Carmarthenshire 025E1,374199.0 per 1,000189.2%
Carmarthenshire 026A1,789142.9 per 1,000296.4%
Carmarthenshire 026B1,484147.1 per 1,000295.1%
Carmarthenshire 026D1,302118.0 per 1,000398.0%
Carmarthenshire 026E1,199426.1 per 1,000197.2%
Carmarthenshire 026F1,399170.7 per 1,000199.4%
Carmarthenshire 026G1,76486.9 per 1,000596.6%
Carmarthenshire 026H1,372245.3 per 1,000196.2%

Your MP

As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

Council1

Postcode districts covering Llanelli2

Middle areas in Llanelli6

Towns near Llanelli6

Llanelli in brief

Llanelli is a town in Carmarthenshire, Wales.

About 42,518 people lived in Llanelli in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £152,944 in 2025 across 478 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 142.5 per 1,000 people in the 12 months to August 2026 (police.uk).

The median price paid for a home in Llanelli was £152,944 in 2025.

Llanelli had 42,143 usual residents at the census.

About 100% of people in Llanelli live in a 1 km square that the radon atlas marks as a radon Affected Area.

In Llanelli, 94.5% of homes and businesses could get gigabit-capable broadband in January 2026.