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Castle H3

Neighbourhood

North Belfast. 658 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 H3, 97.4% of homes and businesses could get gigabit-capable broadband in January 2026.

Population
644
Joint 5,633rd least populated of 46,844
ONS Census 2021 · 2021
Gigabit broadband coverage
97.4%
UK 87.8%
Ofcom · Jan 2026
Aged 15 to 64
69.1%
Joint 7,964th highest of 46,844
ONS Census 2021 · 2021
Aged 65 and over
12.8%
Joint 11,648th 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 H3. See deprivation across Belfast

How Castle H3 compares

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

Castle H3Middle
Population735 neighbourhoods, Belfast · 2021
Population: every neighbourhood in Belfast735 areas from 154 to 2,149. The middle area is 450. Castle H3 is 644.
64473rd most 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 H3 is 97.4%.
97.4%joint 213th lowest
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 H3 is 69.1%.
69.1%joint 209th highest
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 H3 is 12.8%.
12.8%joint 291st lowest

Is Castle H3 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Castle H3 at a rate of 42.6 per 1,000 people.

That compares with 34.9 per 1,000 people across Castle H.

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

In August 2026 alone, 2 cases of crime and anti-social behaviour were recorded in Castle H3.

In the 12 months to August 2026, the most common types were anti-social behaviour (13), violence and sexual offences (6) and criminal damage and arson (3).

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 H3 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 H3 in brief

Castle H3 had 644 usual residents at the census.

In Castle H3, 97.4% of homes and businesses could get gigabit-capable broadband in January 2026.

69.1% of residents in Castle H3 were aged 15 to 64 at the census.

12.8% of residents in Castle H3 were aged 65 or over at the census.