Castle J
Middle areaNorth Belfast. 2,382 people in 0.8 square kilometres.
Gigabit coverage by ward
Connected Nations (Ofcom) · January 2026
Under 60%98% or more
There is no gigabit broadband coverage figure for Castle J’s wards yet.
How Castle J compares
Each dot is a middle area. The black line marks the middle one.
Castle JMiddle
Population175 middle areas, Belfast · 2021
2,44225th highest
Gigabit broadband coverage175 middle areas, Belfast · Jan 2026
99.3%joint 39th highest
Claimant rate175 middle areas, Belfast · Aug 2026
2.8%joint 53rd lowest
Aged 15 to 64175 middle areas, Belfast · 2021
62.1%38th lowest
Figures for the whole of Belfast
These figures are published for the whole of Belfast, not for each middle area, so they describe all of Belfast and not Castle J alone. See Belfast
Castle J in brief
Castle J had 2,442 usual residents at the census.
In Castle J, 99.3% of homes and businesses could get gigabit-capable broadband in January 2026.
In Castle J, 2.8% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026.
62.1% of residents in Castle J were aged 15 to 64 at the census.