Property market
The five-year median is £430,000 from 3 recorded sales in NP11 3GJ. This is a recorded-sale statistic, not a current valuation.
The latest UK House Price Index average for Caerphilly is £197,272 in June 2026, up 5.9% year on year.
NP11 3GJ
Crumlin · Caerphilly · Wales
Updated September 2026
Compare this postcodeLocation overview
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- Post town
- Newport
- Ward
- Crumlin
- Local authority
- Caerphilly
- Constituency
- Newport West and Islwyn
- Postcode district
- NP11
- Postcode sector
- NP11 3
Nearby postcodes
Complete postcode fields and official codes
- Postcode
- NP11 3GJ
- Status
- Current
- Introduced
- 1 June 1999
- Terminated
- Not published
- Postcode area
- NP
- Postcode district
- NP11
- Postcode sector
- NP11 3
- Latitude
- 51.680209
- Longitude
- -3.156881
- British National Grid easting
- 320,111
- British National Grid northing
- 198,572
Statistical and administrative geographies
- Country
- Wales · W92000004
- Region
- W99999999
- Local authority district
- Caerphilly · W06000018
- Electoral ward
- Crumlin · W05001656
- Parish or community
- W04000906
- Westminster constituency
- Newport West and Islwyn · W07000105
- Output area
- W00010290
- Lower layer super output area
- Caerphilly 006B · W01001357
- Middle layer super output area
- Caerphilly 006 · W02000295
Postcode source versions
- Ordnance Survey: Code-Point Open Version 2026-08 · Current postcode units in Great Britain · OGL-3.0
- Office for National Statistics: ONS Postcode Directory Version 2026-08 · United Kingdom; Northern Ireland excluded pending rights review; Crown Dependencies outside product scope · OGL-3.0 with third-party rights
- Ordnance Survey: Boundary-Line Version 2026-05 · Local-authority boundaries in Great Britain · OS OpenData Licence
Explore NP11
Property
38 recorded
sales at this postcode
| Address | Date | Price |
|---|---|---|
| 5, Plynlimon Close, Croespenmaen, Newport, NP11 3GJ | 12 September 2025 | £430,000 |
| 16, Plynlimon Close, Croespenmaen, Newport, NP11 3GJ | 20 June 2025 | £360,000 |
| 2, Plynlimon Close, Croespenmaen, Newport, NP11 3GJ | 14 February 2023 | £460,000 |
Schools
Within 3.1 miles of this postcode
- Open schools
- 27
- Primary
- 0
- Secondary
- 0
- 1.0 km
Crumlin High Level Primary School
Welsh establishment
- 1.2 km
Rhiw Syr Dafydd Primary School
Welsh establishment
- 1.5 km
Tynewydd Primary School
Welsh establishment
Recorded crime
Within 1 mile of this postcode
- Published events
- 540
- Months covered
- 12
- Latest month
- June 2026
Most recorded categories in this period
- Violence and sexual offences 248
- Anti social behaviour 72
- Public order 51
- Criminal damage and arson 42
- Burglary 33
Census 2021
Population and age profile
- Postcode residents
- 64
- Postcode households
- 21
- Residents per household
- 3.0
- NP11 3 residents
- 4,730
27 female, 37 male
Age bands in NP11 3
Wider postcode sector- Age 0 to 14
- 17.3%
- Age 15 to 24
- 10.7%
- Age 25 to 44
- 24.5%
- Age 45 to 64
- 27.3%
- Age 65 and over
- 20.3%
820 residents
506 residents
1,162 residents
1,298 residents
965 residents
This postcode contained 1.4% of the sector's usual residents on Census Day. The age profile describes the wider NP11 3 sector, not people in this individual postcode.
Small counts are adjusted for privacy, so totals can differ slightly between Census tables.
Census Day: 21 March 2021. Sources: ONS/Nomis P001-P004 and ONS CT21_0228. Age table version 2024-04-08.
Fixed broadband coverage
Ofcom's predicted availability across all residential and commercial premises in this postcode in January 2026.
- Superfast, 30 Mbit/s+
- 100%
- Ultrafast, 100 Mbit/s+
- 100%
- Ultrafast, 300 Mbit/s+
- 100%
- Gigabit-capable
- 100%
- Unable to receive decent fixed or FWA broadband
- 0%
- Next Generation Access
- 100%
- Decent broadband available from fixed wireless
- 0%
Predicted coverage, not measured speeds. Check availability for your address with a provider. Postcode-level full-fibre figures are not published in this release.
Source: Ofcom Connected Nations Spring 2026, version 2026-01-v2. Contains Ofcom data licensed under the Open Government Licence v3.0.
GP practices
7
within 5 km
NORTH CELYNEN PRACTICE
CROWN STREET, CRUMLIN, NEWPORT, NP11 4PQ
ODS code W93067
1.2 km
SIX BELLS MEDICAL CENTRE
ABERBEEG MEDICAL CENTRE, THE SQUARE, ABERBEEG, ABERTILLERY, NP13 2AB
ODS code W93009
3.5 km
BLACKWOOD MEDICAL GROUP
AVICENNA MEDICAL CENTRE, PONTLLANFRAITH BLACKWOOD, BLACKWOOD, NP12 2YU
ODS code W93011
3.5 km
PONTLLANFRAITH HEALTH CENTRE
RIVERSIDE MEDICAL PRACTIC, PONTLLANFRAITH HEALTH CENTRE, BLACKWOOD ROAD, PONTLLANFRAITH, BLACKWOOD, NP12 2YU
ODS code W93012
3.5 km
SUNNYBANK HEALTH CENTRE
BRYN ROAD, CEFN FFOREST, BLACKWOOD, NP12 3NA
ODS code W93014
3.7 km
ST. LUKE'S SURGERY
ST LUKES SURGERY, (OFF GWYDDON ROAD), ABERCARN NEWBRIDGE, NEWPORT, NP11 5GX
ODS code W93001
4.0 km
MARKHAM MEDICAL CENTRE
JAMES STREET, MARKHAM, BLACKWOOD, NP12 0QN
ODS code W93010
4.2 km
Main GP practices only; branch surgeries are excluded. Distances are straight-line. Contact the practice to check registration, services, opening hours and appointments.
Source acquired on 2026-09-05. Contains information from NHS England, licenced under the current version of the Open Government Licence.
Nearby transport
- 0.2 miles
Byron Place
BCT · Croespenmaen
- 0.2 miles
Millbrook
BCT · Kendon
- 0.2 miles
Pleasant View
BCT · Kendon
- 0.2 miles
Ty Brachty Terrace
BCT · Kendon
- 0.3 miles
Pandy Road
BCT · Croespenmaen
Evidence in context
Schools
27 open schools are in scope, including 0 primary and 0 secondary schools. Crumlin High Level Primary School is the nearest published school at 0.6 miles.
Counts describe active establishment records. They do not assess admissions, catchments or quality.
Recorded crime
540 published events cover 12 months, averaging 45 events per published month. The largest recorded category is Violence and sexual offences with 248 events.
The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.