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Castle

Ward

East Swansea. About 15,522 people in 2.3 square kilometres.

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Radon Affected Area by ward

Worked out by Open Index · 2022

Under 1%90% or more

About 64% of people in Castle live in a 1 km square that the radon atlas marks as a radon Affected Area.

Population
13,196
1,243rd most populated of 8,397
ONS Census 2021 · 2021
People in radon Affected Area squares
64%
UK 44%
Worked out by Open Index
Gigabit broadband coverage
92.4%
UK 87.8%
Ofcom · Jan 2026
Claimant rate
7.6%
UK 3.9%
ONS via Nomis · Aug 2026

How Castle compares

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

CastleMiddle
Population32 wards, Swansea · 2021
Population: every ward in Swansea32 areas from 2,502 to 16,027. The middle area is 7,336. Castle is 13,196.
13,1965th most populated
People in radon Affected Area squares32 wards, Swansea · 2022
People in radon Affected Area squares: every ward in Swansea32 areas from 7.0% to 100.0%. The middle area is 99.0%. Castle is 64.0%.
64%8th fewest people in radon Affected Areas
Gigabit broadband coverage32 wards, Swansea · Jan 2026
Gigabit broadband coverage: every ward in Swansea32 areas from 44.5% to 99.9%. The middle area is 95.0%. Castle is 92.4%.
92.4%12th lowest
Claimant rate32 wards, Swansea · Aug 2026
Claimant rate: every ward in Swansea32 areas from 0.8% to 7.6%. The middle area is 2.9%. Castle is 7.6%.
7.6%highest

Is Castle safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Castle at a rate of 340.7 per 1,000 people.

That compares with 87.1 per 1,000 people across Swansea.

Across Wales as a whole, the recorded crime rate was 96.7 per 1,000 people.

In August 2026 alone, 466 cases of crime and anti-social behaviour were recorded in Castle.

In the 12 months to August 2026, the most common types were violence and sexual offences (1,681), other crime (1,031) and shoplifting (742).

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.

Figures for the whole of Swansea

These figures are published for the whole of Swansea, not for each ward, so they describe all of Swansea and not Castle alone. See Swansea

Average house price
£205,383
Down 0.2% in a year
HM Land Registry · Jul 2026
Median full-time pay
£36,586
111th lowest paid of 348
ONS earnings survey · 2025
House price to pay
5.6×
Joint 65th most affordable of 348
Worked out by Open Index
Population estimate
249,429
Down 0.5% in a year
ONS population estimates · 2025
Castle in brief

Castle had 13,196 usual residents at the census.

About 64% of people in Castle live in a 1 km square that the radon atlas marks as a radon Affected Area.

In Castle, 92.4% of homes and businesses could get gigabit-capable broadband in January 2026.

In Castle, 7.6% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.