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CF45 4BB

Mountain Ash · Rhondda Cynon Taf · Wales

Updated September 2026

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Location overview

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Post town
Mountain Ash
Ward
Mountain Ash
Local authority
Rhondda Cynon Taf
Constituency
Pontypridd
Postcode district
CF45
Postcode sector
CF45 4

Nearby postcodes

Nearby postcode distances
Postcode Distance
CF45 4AU 55 m
CF45 4AS 57 m
CF45 4BG 60 m
CF45 4AY 78 m
CF45 4AT 88 m
Complete postcode fields and official codes
Postcode
CF45 4BB
Status
Current
Introduced
1 January 1980
Terminated
Not published
Postcode area
CF
Postcode district
CF45
Postcode sector
CF45 4
Latitude
51.686143
Longitude
-3.376485
British National Grid easting
304,941
British National Grid northing
199,495

Statistical and administrative geographies

Country
Wales · W92000004
Region
W99999999
Local authority district
Rhondda Cynon Taf · W06000016
Electoral ward
Mountain Ash · W05001092
Parish or community
W04001016
Westminster constituency
Pontypridd · W07000106
Output area
W00006339
Lower layer super output area
Rhondda Cynon Taf 006A · W01001204
Middle layer super output area
Rhondda Cynon Taf 006 · W02000257

Postcode source versions

Explore CF45

Property

View all property records
40 recorded sales at this postcode
Address Date Price
59, Allen Street, Mountain Ash, CF45 4BB 9 March 2026 £189,998
42, Allen Street, Mountain Ash, CF45 4BB 6 September 2024 £85,000
47, Allen Street, Mountain Ash, CF45 4BB 22 August 2023 £115,000

Schools

Within 3.1 miles of this postcode

View all nearby schools
Open schools
21
Primary
0
Secondary
0

  1. Caegarw Primary School

    Welsh establishment

    115 m

  2. Our Lady's R.C. Primary School

    Welsh establishment

    772 m

  3. Darrenlas Primary School

    Welsh establishment

    886 m

Recorded crime

Within 1 mile of this postcode

View all nearby crime records
Published events
864
Months covered
12
Latest month
June 2026

Most recorded categories in this period

  • Violence and sexual offences 436
  • Public order 108
  • Anti social behaviour 86
  • Criminal damage and arson 75
  • Other theft 38

Census 2021

Population and age profile

Postcode residents
67

40 female, 27 male

Postcode households
29
Residents per household
2.3
CF45 4 residents
9,370

Age bands in CF45 4

Wider postcode sector
Age 0 to 14
17.7%

1,654 residents

Age 15 to 24
11.2%

1,046 residents

Age 25 to 44
26.3%

2,462 residents

Age 45 to 64
26.4%

2,470 residents

Age 65 and over
18.5%

1,737 residents

This postcode contained 0.7% of the sector's usual residents on Census Day. The age profile describes the wider CF45 4 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

5

within 5 km

  • MEDDYGFA GLAN CYNON SURGE

    TY CALON LAN, OXFORD STREET, MOUNTAIN ASH, CF45 3HD

    ODS code W95029

    558 m

  • HEALTH HUB IW

    YSBYTY CWM CYNON, NEW ROAD, MOUNTAIN ASH, CF45 4BZ

    ODS code W00208

    1.1 km

  • ABERCWMBOI MEDICAL PRACTICE

    ABERCWMBOI MEDICAL CENTRE, 1-3 JOHN STREET, ABERCWMBOI, ABERDARE, CF44 6BL

    ODS code W95087

    2.4 km

  • BROOKSIDE MEDICAL CENTRE

    HEOL AFON TAF, TROEDYRHIW, MERTHYR TYDFIL, CF48 4DT

    ODS code W95634

    3.5 km

  • CWMAMAN SURGERY

    6-14 GLANAMAN ROAD, CWMAMAN, ABERDARE, CF44 6HY

    ODS code W95016

    4.8 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 2026-09-03. Contains information from NHS England, licenced under the current version of the Open Government Licence.

Nearby transport

  • Cae Garw Primary School

    BCT · Mountain Ash

    0.1 miles

  • Lady Aberdare Flats

    BCT · Mountain Ash

    0.1 miles

  • Mountain Ash Town Hall

    BCT · Mountain Ash

    0.2 miles

  • New Road

    BCT · Mountain Ash

    0.2 miles

  • The Lodge

    BCT · Mountain Ash

    0.2 miles

Evidence in context

Property market

The five-year median is £125,000 from 9 recorded sales in CF45 4BB. This is a recorded-sale statistic, not a current valuation.

The latest UK House Price Index average for Rhondda Cynon Taf is £167,559 in June 2026, up 7.4% year on year.

Schools

21 open schools are in scope, including 0 primary and 0 secondary schools. Caegarw Primary School is the nearest published school at 115 m.

Counts describe active establishment records. They do not assess admissions, catchments or quality.

Recorded crime

864 published events cover 12 months, averaging 72 events per published month. The largest recorded category is Violence and sexual offences with 436 events.

The source publishes anonymised street-level events. These figures are not a measure of safety for an individual address.