Least deprived 10%
IMD Wales
Around average · 7.5 per 1k
Crime · Aug '26
Wales
Region
Deprivation Index (IMD)
IMD Wales — Index of Multiple Deprivation
Measures deprivation across income, employment, health, education, access to services, housing, and community safety.
1805
Rank out of 1,917 LSOAs in Wales
1 - Most deprived10 - Least deprived
Rank 1805 out of 1,917 lower layer super output areas in Wales. N/A for England, Scotland and Northern Ireland as this postcode is in Wales.
Property sales (Land Registry)
England & WalesPolice Recorded Crime near CF23 8NJ
England & WalesCrime trends · near CF23 8NJ
Counts are for Pontprennau and Old St Mellons electoral ward, not a 1-mile police.uk street search around this postcode.
data.police.uk · YoY vs same month last year · per 1,000 residents (Census 2021)Sep '24 – Aug '26
Key categories · YoY
Violent Crime
23
YoY —
23120
Sep '24Mar '25Sep '25Mar '26Aug '26
ASB
32
YoY —
32160
Sep '24Mar '25Sep '25Mar '26Aug '26
Vehicle Crime
4
YoY —
420
Sep '24Mar '25Sep '25Mar '26Aug '26
Burglary
0
YoY —
000
Sep '24Mar '25Sep '25Mar '26Aug '26
Criminal damage
10
YoY —
1050
Sep '24Mar '25Sep '25Mar '26Aug '26
Demographics (LSOA 2021 context)
Ethnicity
White Brit.76.3%
Other White5.6%
Other ethnic group: Arab2.8%
Indian2.5%
African2.0%
+ 4 other groups · 10.9%
Religion
Christian45.5%
No religion39.9%
Muslim7.5%
Not answered4.7%
+ other · 2.4%
Age groups
35–4924.2%
25–3420.0%
50–6416.9%
≤48.7%
5–97.5%
+ 6 other age groups · 22.8%
Households
Married or civil partnership couple: Dependent children21.9%
One person: other17.9%
Cohabiting couple family: No children12.3%
Married or civil partnership couple: No children11.4%
Lone parent family: With dependent children8.3%
+ 9 other households · 28.2%
Coordinates & Location for CF23 8NJ
Postcode
CF23 8NJ
Coordinates
51.5335, -3.1326
Grid reference
ST215822
Easting
321,539
Northing
182,228
Region
Wales
Plus Code
9C3RGVM8+9X
User Type
Small user postcode
Grid Quality
Quality indicator 1 (highest positional precision)
Built Up Area
Cardiff
Travel to Work
Cardiff
ITL Region
Cardiff
National Park
Non-National Park
Administrative Information
Cardiff
Local Authority
Council AreaCardiff North W07000090
Constituency
W07000090South Wales
Police Force
Wales
Ward
Pontprennau and Old St Mellons
Constituency code
W07000090
EU Electoral Region
Wales
Parish
Pontprennau
International Territorial Level
Cardiff
Health & NHS
Cardiff and Vale University Health Board
Health Authority
Serving (pseudo) Wales
NHS WalesWales
Cancer Alliance
National
Health Authority
Cardiff and Vale University Health Board
NHS Region
Wales
Integrated Care Board
Wales
Primary Care Org
Cardiff and Vale University Health Board
Sub ICB Location
Cardiff and Vale University
Cancer Alliance
Wales
Statistical Areas
LSOA 2021
Super Output Area
Cardiff 003B W01001842
W01001842MSOA 2021
Mid Super Output
Cardiff 003 W02000369
W02000369LSOA 2011
Super Output Area
Cardiff 003B W01001842
W01001842MSOA 2011
Mid Super Output
Cardiff 003 W02000369
W02000369Urban: Nearer to a major town or city
Rural/Urban Classification 2021
2001 Classification
(England/Wales) Urban ≥ 10k – less sparse: OA falls within urban settlements with a population of 10,000 or more and the wider surrounding area is less sparsely populated 5
2011 Classification
(England/Wales) Urban city and town C1
2021 Classification
Urban: Nearer to a major town or city UN1
Sun & Time Information
7:30 AM
Sunrise
6:26 PM
Sunset
10 hours 56 minutes of daylight today
Sunrise (today)
7:30 AM
Sunset (today)
6:26 PM
Daylight duration
10 hours 56 minutes
Time zone
GMT / BST (UTC +0 / +1)
Postcode History
June 1999
First Introduced
Active fromNot terminated
Usage Ended
Terminated~27 years
Active Duration
1999 -> PresentJune 1999 — Introduced
Postcode CF23 8NJ introduced by Royal Mail.
2001 — Census Classification
2001 Rural/Urban Classification: (England/Wales) Urban ≥ 10k – less sparse: OA falls within urban settlements with a population of 10,000 or more and the wider surrounding area is less sparsely populated 5
2011 — Reclassified
2011 Rural/Urban Classification: (England/Wales) Urban city and town C1.
2021 — Census Update
2021 Census classification: Urban: Nearer to a major town or city UN1. LSOA W01001842 and MSOA W02000369 assigned.
2025 — Indices of Deprivation
IMD Wales rank: 1805
Present — Active
Postcode CF23 8NJ is currently active and in use.
First introduced
June 1999
Usage ended
Not terminated
Active duration
~27 years
Last updated
2026-08-01
Current status
Live
School applications
We've matched the postcode to Cardiff.
You apply through this education local authority even if the school is in another council area.
Apply for a primary place via CardiffApply for a secondary placeAdmissions and composite prospectus guidanceApplication deadlines and offer daysHome education — find your councilHome education guidance
GOV.UK is the official apply and admissions handoff. We do not link a generic council homepage. Per-LA composite prospectus URLs are not in the API yet.
Spot a mistake on this page? Email [email protected] and we'll check it against the source.
Explore the full Cardiff
See local data, transport links, deprivation trends and more for the broader area — all in one place.