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Castle U5

Neighbourhood

North Belfast. 434 people (mid-2024 estimate) in 0.1 square kilometres.

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Gigabit coverage by neighbourhood

Connected Nations (Ofcom) · January 2026

Under 60%98% or more

In Castle U5, 99.5% of homes and businesses could get gigabit-capable broadband in January 2026.

Population
440
Joint 1,509th least populated of 46,844
ONS Census 2021 · 2021
Gigabit broadband coverage
99.5%
UK 87.8%
Ofcom · Jan 2026
Aged 15 to 64
58.6%
Joint 9,525th lowest of 46,844
ONS Census 2021 · 2021
Aged 65 and over
11.3%
Joint 8,984th lowest of 46,844
ONS Census 2021 · 2021

Northern Ireland Multiple Deprivation Measure 2017 is published for the Super Output Areas (2001), whose boundaries differ from this neighbourhood’s, so it has no figure for Castle U5. See deprivation across Belfast

How Castle U5 compares

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

Castle U5Middle
Population735 neighbourhoods, Belfast · 2021
Population: every neighbourhood in Belfast735 areas from 154 to 2,149. The middle area is 450. Castle U5 is 440.
440joint 343rd least populated
Gigabit broadband coverage735 neighbourhoods, Belfast · Jan 2026
Gigabit broadband coverage: every neighbourhood in Belfast735 areas from 48.0% to 100.0%. The middle area is 99.2%. Castle U5 is 99.5%.
99.5%joint 299th highest
Aged 15 to 64735 neighbourhoods, Belfast · 2021
Aged 15 to 64: every neighbourhood in Belfast735 areas from 28.0% to 97.3%. The middle area is 65.1%. Castle U5 is 58.6%.
58.6%67th lowest
Aged 65 and over735 neighbourhoods, Belfast · 2021
Aged 65 and over: every neighbourhood in Belfast735 areas from 0.1% to 67.8%. The middle area is 14.7%. Castle U5 is 11.3%.
11.3%joint 227th lowest

Is Castle U5 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Castle U5 at a rate of 170.5 per 1,000 people.

That compares with 127.7 per 1,000 people across Castle U.

Across Northern Ireland as a whole, the recorded crime rate was 70.2 per 1,000 people.

In August 2026 alone, 6 cases of crime and anti-social behaviour were recorded in Castle U5.

In the 12 months to August 2026, the most common types were criminal damage and arson (26), anti-social behaviour (18) and violence and sexual offences (18).

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 Belfast

These figures are published for the whole of Belfast, not for each neighbourhood, so they describe all of Belfast and not Castle U5 alone. See Belfast

Average house price
£184,768
Up 7.7% in a year
HM Land Registry · Aug 2026
Population estimate
351,927
Down 0.1% in a year
ONS population estimates · 2025
Female life expectancy
80.5years
UK 83.0 years
ONS life expectancy · 2022 to 2024
People in radon Affected Area squares
14%
UK 44%
Worked out by Open Index
Castle U5 in brief

Castle U5 had 440 usual residents at the census.

In Castle U5, 99.5% of homes and businesses could get gigabit-capable broadband in January 2026.

58.6% of residents in Castle U5 were aged 15 to 64 at the census.

11.3% of residents in Castle U5 were aged 65 or over at the census.