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Treharris & Trelewis

Interactive map displaying Treharris & Trelewis

About

Treharris and Trelewis are neighbouring settlements in the Taff Bargoed Valley. The area is defined by its industrial past, with the Trelewis Drift coal mine once a central employer. The landscape is marked by the large, grassed-over spoil tip known locally as the 'Trecatti tip', a prominent green hill that now offers walking routes and views across the valley. The communities are connected by local roads and residential streets that follow the contours of the hillsides.

The area is home to Taff Bargoed Park, a large country park created on reclaimed colliery land, featuring a lake and extensive paths. The former railway line through the valley is now part of the Taff Trail, a long-distance route for cyclists and walkers. Daily life centres around local amenities like Treharris Square, with its war memorial and public houses. The distinctive silhouette of the old winding wheel from the Trelewis Drift mine remains preserved on the hillside as a local landmark.

Area overview

On average Treharris & Trelewis has moderate deprivation and moderate crime levels, with around 46 crimes per 1,000 residents per year. Approximately 10.7% of homes in this area are social housing provided by a local council or housing association. The average income per household in Treharris & Trelewis is £44,005 per year. Treharris & Trelewis is home to around 8,681 people, with a population density of about 880.2 per km2.

Crime rate
4/10
Crimes per 1k residents
46
Deprivation level
6/10
Income level
6/10
Social housing
10.7%
Connectivity
N/A

Area Profile

Treharris & Trelewis Population
8,681
Population density
880.2 per km²

Crime

Crime per 1,000 population

Violence and sexual offences
22.69(-38%)
Anti-social behaviour
8.41(-42%)
Public order
5.76(-35%)
Criminal damage and arson
4.84(-40%)
Vehicle crime
4.38(+39%)
Wales average

Demographics

Ethnic groups

British
8,414
96.96%
Other White
72
0.83%
Chinese
31
0.36%
Irish
24
0.28%
Other Mixed or Multiple ethnic groups
22
0.25%
Total population: 8,678

Economics

Education (age 16+)

Level 4+ (Degree)
1,857
26.04%
No qualifications
1,701
23.85%
Level 3 (A level)
1,247
17.49%
Level 2 (GCSEs 9-4)
1,053
14.77%
Level 1 (GCSEs 3-1)
701
9.83%
Total 16+ residents: 7,131

Housing

Housing tenure

Owns outright
1,434
38.69%
Owns with a mortgage
1,269
34.24%
Private landlord or letting agency
442
11.93%
Other social rented
335
9.04%
Social rents from council
134
3.62%
Total households: 3,706

Property prices in Treharris & Trelewis

Based on 79 recent sales, the median property price is £150,000 in Treharris & Trelewis area, with individual transactions ranging from £45,000 up to £900,000.

Price distribution per property type (last year)

Price distribution by property type for Treharris & Trelewis in the last year.

Median sale price and percentiles per property type (last year)

Median sale price, sales count, and percentile information for each property type in Treharris & Trelewis over the last year.
TypeSalesMedian
Detached20£310,000
Semi-Detached19£150,000
Terraced40£116,000

10 years median price trend in Treharris & Trelewis

Ten year median sale price trend for each property type in Treharris & Trelewis.

All postcodes in Treharris & Trelewis

CF465RZ

Heol Nant Caiach

CF465PF

Goitre-Coed Road

CF465AY

Fir Tree Drive

CF465EA

Pentwyn Deintyr

CF465HJ

Shire Court

CF465NB

Cardiff Road

CF465ND

Rock Villas

CF465BW

Fir Tree Drive

CF466DQ

The Paddocks

CF465AA

Thomas Street

CF465DD

Berthlwyd Cottages

CF465DU

Cardiff Road

CF465EL

Fox Street

CF466EZ

Primrose Walk

CF465HN

Fell Street

CF466DF

Mandeg

CF465HG

Forest Road

CF465BZ

Ty Llwyd Parc Estate

CF465ET

Perrott Street

CF465LY

Blackbrook

CF465RH

The Park

CF466BE

Maen Ganol

CF465DF

Bryngerwn Cottages

CF465PD

Susannah Place

CF466BL

Captains Hill

CF465LA

Ty Llwyd Parc Estate

CF465LG

Thomas Street

CF465NR

Edwards Ville

CF466AR

Edwards Terrace

CF466BA

Ael Y Bryn

CF465BH

Penlocks

CF465DP

Beddoe Terrace

CF466EJ

Orchard Row

CF465PE

Cardiff Road

CF465PS

John Street

CF466TD

High Street

CF465AH

Cardiff Road

CF465BD

Goitre Coed Road

CF465BJ

Griffin Rise

CF465HS

Pritchard Street

CF466BS

Ffaldcaiach

CF466DN

Gelligaer Road

CF465DL

Brynheulog Cottages

CF465LL

Victoria Street

CF465LS

Pleasant View

CF466AB

High Street

CF466DG

Maesycoed

CF465HW

Webster Street

CF465PH

Ashgrove

CF466DA

Mackintosh Terrace

CF465AU

Fair View Terrace

CF465DW

Leigh Terrace

CF465RL

Twynygarreg

CF465AW

Rodericks Terrace

CF466ST

Treharris

CF465AJ

Brecon Walk

CF465RP

Heather Court

CF466DP

Efail Shingrig

CF466EF

River Avenue

CF466BW

High Street

CF465BE

Goitre Coed Road

CF465BG

Rose Hill Cottages

CF465DN

Caerphilly Road

CF465PJ

The Hollies

CF465PP

The Hollies

CF465PU

Cardiff Road

CF466BD

Gilfach Maen Isaf Cottages

CF465AN

Dan Y Twyn

CF465BS

Pentwyn Road

CF465HY

Glan Yr Afon

CF465PA

Treharne Terrace

CF466AS

Edwards Terrace

CF465PN

The Hollies

CF465RG

Oaklands Terrace

CF465DS

Old Post Office Lane

CF465AP

Woodland Crescent

CF465AB

Thornwood Place

CF465EY

Cardiff Road

CF465HE

Fox Street

CF465NU

Tyn Y Banwen Road

CF465AE

Susannah Place

CF465HL

Penn Street

CF465LH

Mary Street

CF465PT

Glen View Villas

CF465AR

Woodlands Crescent

CF465ER

Perrott Street

CF465NP

Windsor Road

CF466AN

Richards Terrace

CF465RY

Heol Coflorna

CF465AS

Woodlands Avenue

CF465NJ

Taff Vale Estate

CF465RA

Spencer Place

CF465DR

Millers Row

CF465ED

Mill Terrace

CF465HU

Cilhaul

CF465NS

Edwardsville

CF465RT

Glyn Bargoed Road

CF466AP

Pen Y Groes Heol

CF465HT

Cilhaul

CF466BG

Maen Gilfach

Data Sources

All data is sourced from official UK government agencies and public datasets. Last updated: 16/01/2026.