Open SeneddCymraeg
Senedd constituency

Caerdydd Ffynnon Taf

One of Wales's 16 Senedd constituencies. It is made up of 121 neighbourhoods of about 1,600 people each, and six Members represent it in the Senedd.

Who represents it

All six were elected together from party lists, so each one represents the whole constituency. You can contact any of them about anything the Senedd or the Welsh Government is responsible for.

Afan Ogwr RhonddaBangor Conwy MônBlaenau Gwent Caerffili RhymniBrycheiniog Tawe NeddCaerdydd Ffynnon TafCaerdydd PenarthCasnewydd IslwynCeredigion PenfroClwydFflint WrecsamGwynedd MaldwynGŵyr AbertawePen-y-bont Bro MorgannwgPontypridd Cynon MerthyrSir Fynwy TorfaenSir Gaerfyrddin

Town and country

Of its 121 neighbourhoods, 120 are in towns and cities, 1 are small towns or on the edge of towns, and 0 are villages or open countryside.

Across Wales, 16% of neighbourhoods are villages or countryside.

Taffs Well 1: Town or cityTaffs Well 2: Town or cityAdamsdown 1: Town or cityAdamsdown 2: Town or cityAdamsdown 3: Town or cityAdamsdown 4: Town or cityAdamsdown 5: Town or cityCyncoed 1: Town or cityCyncoed 2: Town or cityCyncoed 3: Town or cityCyncoed 4: Town or cityCyncoed 5: Town or cityCyncoed 6: Town or cityCyncoed 7: Town or cityGabalfa 1: Town or cityGabalfa 2: Town or cityGabalfa 3: Town or cityGabalfa 4: Town or cityHeath 1: Town or cityHeath 2: Town or cityHeath 3: Town or cityHeath 4: Town or cityHeath 5: Town or cityHeath 6: Town or cityHeath 7: Town or cityHeath 8: Town or cityLisvane and Thornhill 1: Town or cityLisvane and Thornhill 2: Town or cityLlandaff North 1: Town or cityLlandaff North 2: Town or cityLlandaff North 3: Town or cityLlandaff North 4: Town or cityLlandaff North 5: Town or cityLlandaff North 6: Town or cityLlanishen 1: Town or cityLlanishen 2: Town or cityLisvane and Thornhill 3: Town or cityLisvane and Thornhill 4: Town or cityLisvane and Thornhill 5: Town or cityLisvane and Thornhill 6: Town or cityLlanishen 7: Town or cityLisvane and Thornhill 7: Town or cityLlanishen 9: Town or cityLlanishen 10: Town or cityLlanrumney 1: Town or cityLlanrumney 2: Town or cityLlanrumney 3: Town or cityLlanrumney 4: Town or cityLlanrumney 5: Town or cityLlanrumney 6: Town or cityLlanrumney 7: Town or cityPentwyn 1: Town or cityPentwyn 2: Town or cityPentwyn 3: Town or cityPentwyn 4: Town or cityPentwyn 5: Town or cityPentwyn 6: Town or cityPentwyn 7: Town or cityPentwyn 8: Town or cityPentwyn 9: Town or cityPentwyn 10: Town or cityPenylan 1: Town or cityPenylan 2: Town or cityPenylan 3: Town or cityPenylan 4: Town or cityPenylan 5: Town or cityPenylan 6: Town or cityPenylan 7: Town or cityPenylan 8: Town or cityPlasnewydd 1: Town or cityPlasnewydd 2: Town or cityPlasnewydd 3: Town or cityPlasnewydd 4: Town or cityPlasnewydd 5: Town or cityPlasnewydd 6: Town or cityPlasnewydd 7: Town or cityPlasnewydd 8: Town or cityPlasnewydd 9: Town or cityPlasnewydd 10: Town or cityPlasnewydd 11: Town or cityPontprennau and Old St Mellons 1: Town or cityPontprennau and Old St Mellons 2: Town or cityPontprennau and Old St Mellons 3: Town or cityPontprennau and Old St Mellons 5: Town or cityRhiwbina 1: Town or cityRhiwbina 2: Town or cityRhiwbina 3: Town or cityRhiwbina 4: Town or cityRhiwbina 5: Town or cityRhiwbina 6: Town or cityRhiwbina 7: Town or cityRumney 1: Town or cityRumney 2: Town or cityRumney 3: Town or cityRumney 4: Town or cityRumney 5: Town or cityRumney 6: Town or cityTrowbridge 1: Town or cityTrowbridge 2: Town or cityTrowbridge 3: Town or cityTrowbridge 4: Town or cityTrowbridge 5: Town or cityTrowbridge 6: Town or cityTrowbridge 7: Town or cityTrowbridge 8: Town or cityTrowbridge 9: Town or cityTrowbridge 10: Town or cityWhitchurch and Tongwynlais 1: Town or cityWhitchurch and Tongwynlais 3: Town or cityWhitchurch and Tongwynlais 4: Town or cityWhitchurch and Tongwynlais 5: Town or cityWhitchurch and Tongwynlais 6: Town or cityWhitchurch and Tongwynlais 7: Small town or edge of townWhitchurch and Tongwynlais 8: Town or cityWhitchurch and Tongwynlais 9: Town or cityWhitchurch and Tongwynlais 10: Town or cityLlanishen 11: Town or cityLlanishen 12: Town or cityPontprennau and Old St Mellons 6: Town or cityPontprennau and Old St Mellons 7: Town or cityPontprennau and Old St Mellons 8: Town or city
Town and country
  • Town or city
  • Small town or edge of town
  • Village or countryside

Welsh speakers

In the 2021 census, about 12% of people here aged three or over said they could speak Welsh. Across Wales it was about 18%.

In none of its neighbourhoods do 40% or more speak Welsh.

The highest share is in Whitchurch and Tongwynlais 1, at 30.5%.

Taffs Well 1: 13.0% speak WelshTaffs Well 2: 15.9% speak WelshAdamsdown 1: 6.2% speak WelshAdamsdown 2: 6.4% speak WelshAdamsdown 3: 7.2% speak WelshAdamsdown 4: 10.2% speak WelshAdamsdown 5: 8.5% speak WelshCyncoed 1: 12.8% speak WelshCyncoed 2: 13.4% speak WelshCyncoed 3: 11.1% speak WelshCyncoed 4: 11.7% speak WelshCyncoed 5: 13.6% speak WelshCyncoed 6: 12.1% speak WelshCyncoed 7: 12.6% speak WelshGabalfa 1: 15.3% speak WelshGabalfa 2: 9.4% speak WelshGabalfa 3: 15.8% speak WelshGabalfa 4: 14.9% speak WelshHeath 1: 17.8% speak WelshHeath 2: 16.0% speak WelshHeath 3: 15.5% speak WelshHeath 4: 13.3% speak WelshHeath 5: 10.7% speak WelshHeath 6: 17.6% speak WelshHeath 7: 12.1% speak WelshHeath 8: 11.5% speak WelshLisvane and Thornhill 1: 12.7% speak WelshLisvane and Thornhill 2: 13.0% speak WelshLlandaff North 1: 10.9% speak WelshLlandaff North 2: 16.4% speak WelshLlandaff North 3: 10.3% speak WelshLlandaff North 4: 10.2% speak WelshLlandaff North 5: 20.7% speak WelshLlandaff North 6: 9.8% speak WelshLlanishen 1: 15.5% speak WelshLlanishen 2: 8.8% speak WelshLisvane and Thornhill 3: 12.5% speak WelshLisvane and Thornhill 4: 12.7% speak WelshLisvane and Thornhill 5: 13.0% speak WelshLisvane and Thornhill 6: 12.9% speak WelshLlanishen 7: 12.3% speak WelshLisvane and Thornhill 7: 11.3% speak WelshLlanishen 9: 15.3% speak WelshLlanishen 10: 10.4% speak WelshLlanrumney 1: 6.2% speak WelshLlanrumney 2: 6.9% speak WelshLlanrumney 3: 7.0% speak WelshLlanrumney 4: 10.2% speak WelshLlanrumney 5: 11.3% speak WelshLlanrumney 6: 8.6% speak WelshLlanrumney 7: 6.4% speak WelshPentwyn 1: 10.1% speak WelshPentwyn 2: 7.5% speak WelshPentwyn 3: 7.4% speak WelshPentwyn 4: 6.8% speak WelshPentwyn 5: 8.2% speak WelshPentwyn 6: 7.9% speak WelshPentwyn 7: 6.6% speak WelshPentwyn 8: 9.2% speak WelshPentwyn 9: 7.1% speak WelshPentwyn 10: 8.8% speak WelshPenylan 1: 11.3% speak WelshPenylan 2: 12.5% speak WelshPenylan 3: 18.3% speak WelshPenylan 4: 13.2% speak WelshPenylan 5: 14.9% speak WelshPenylan 6: 15.6% speak WelshPenylan 7: 12.8% speak WelshPenylan 8: 14.3% speak WelshPlasnewydd 1: 8.5% speak WelshPlasnewydd 2: 10.0% speak WelshPlasnewydd 3: 12.7% speak WelshPlasnewydd 4: 8.3% speak WelshPlasnewydd 5: 13.7% speak WelshPlasnewydd 6: 10.1% speak WelshPlasnewydd 7: 8.0% speak WelshPlasnewydd 8: 14.6% speak WelshPlasnewydd 9: 8.7% speak WelshPlasnewydd 10: 14.2% speak WelshPlasnewydd 11: 11.7% speak WelshPontprennau and Old St Mellons 1: 6.7% speak WelshPontprennau and Old St Mellons 2: 10.2% speak WelshPontprennau and Old St Mellons 3: 11.1% speak WelshPontprennau and Old St Mellons 5: 10.6% speak WelshRhiwbina 1: 17.4% speak WelshRhiwbina 2: 14.4% speak WelshRhiwbina 3: 18.2% speak WelshRhiwbina 4: 12.6% speak WelshRhiwbina 5: 15.8% speak WelshRhiwbina 6: 11.1% speak WelshRhiwbina 7: 11.3% speak WelshRumney 1: 9.3% speak WelshRumney 2: 7.1% speak WelshRumney 3: 10.8% speak WelshRumney 4: 7.6% speak WelshRumney 5: 8.9% speak WelshRumney 6: 8.8% speak WelshTrowbridge 1: 10.3% speak WelshTrowbridge 2: 8.3% speak WelshTrowbridge 3: 7.4% speak WelshTrowbridge 4: 8.5% speak WelshTrowbridge 5: 6.0% speak WelshTrowbridge 6: 9.5% speak WelshTrowbridge 7: 8.9% speak WelshTrowbridge 8: 9.1% speak WelshTrowbridge 9: 9.4% speak WelshTrowbridge 10: 8.7% speak WelshWhitchurch and Tongwynlais 1: 30.5% speak WelshWhitchurch and Tongwynlais 3: 14.6% speak WelshWhitchurch and Tongwynlais 4: 10.8% speak WelshWhitchurch and Tongwynlais 5: 17.3% speak WelshWhitchurch and Tongwynlais 6: 14.7% speak WelshWhitchurch and Tongwynlais 7: 12.6% speak WelshWhitchurch and Tongwynlais 8: 16.9% speak WelshWhitchurch and Tongwynlais 9: 17.1% speak WelshWhitchurch and Tongwynlais 10: 25.1% speak WelshLlanishen 11: 10.0% speak WelshLlanishen 12: 14.3% speak WelshPontprennau and Old St Mellons 6: 10.5% speak WelshPontprennau and Old St Mellons 7: 12.5% speak WelshPontprennau and Old St Mellons 8: 13.0% speak Welsh
Share who can speak Welsh
  • Under 10%
  • 10 to 20%
  • 20 to 40%
  • 40 to 60%
  • 60% or more

Deprivation

The Welsh Government ranks every neighbourhood in Wales, from the most deprived (1) to the least deprived (1,917). It looks at income, jobs, health, education, housing, access to services, safety and the local environment. It describes places, not people: not everyone in a deprived area is poor, and many people on low incomes live elsewhere.

15 of the neighbourhoods here are among the 10% most deprived in Wales, and 30 are among the 10% least deprived. If deprivation were spread evenly, you would expect about 12 of each.

The most deprived is Trowbridge 8, ranked 6 of 1,917. The least deprived is Heath 1, ranked 1,908.

Better or worse than the middle of Wales

The rank of the middle neighbourhood here on each measure. Dots to the left of the line are more deprived than the middle of Wales; dots to the right are less deprived.

← More deprivedLess deprived →
  • Income
  • Jobs
  • Health
  • Education
  • Access to services
  • Housing
  • Community safety
  • Local environment

Compared with the rest of Wales, it does worst on the local environment and best on education.

Taffs Well 1: deprivation rank 1,286 of 1,917Taffs Well 2: deprivation rank 1,179 of 1,917Adamsdown 1: deprivation rank 189 of 1,917Adamsdown 2: deprivation rank 406 of 1,917Adamsdown 3: deprivation rank 147 of 1,917Adamsdown 4: deprivation rank 410 of 1,917Adamsdown 5: deprivation rank 216 of 1,917Cyncoed 1: deprivation rank 1,897 of 1,917Cyncoed 2: deprivation rank 1,884 of 1,917Cyncoed 3: deprivation rank 1,780 of 1,917Cyncoed 4: deprivation rank 1,701 of 1,917Cyncoed 5: deprivation rank 1,883 of 1,917Cyncoed 6: deprivation rank 1,736 of 1,917Cyncoed 7: deprivation rank 1,874 of 1,917Gabalfa 1: deprivation rank 1,685 of 1,917Gabalfa 2: deprivation rank 900 of 1,917Gabalfa 3: deprivation rank 1,383 of 1,917Gabalfa 4: deprivation rank 1,479 of 1,917Heath 1: deprivation rank 1,908 of 1,917Heath 2: deprivation rank 1,441 of 1,917Heath 3: deprivation rank 1,862 of 1,917Heath 4: deprivation rank 1,707 of 1,917Heath 5: deprivation rank 1,529 of 1,917Heath 6: deprivation rank 1,828 of 1,917Heath 7: deprivation rank 1,489 of 1,917Heath 8: deprivation rank 1,794 of 1,917Lisvane and Thornhill 1: deprivation rank 1,700 of 1,917Lisvane and Thornhill 2: deprivation rank 1,811 of 1,917Llandaff North 1: deprivation rank 154 of 1,917Llandaff North 2: deprivation rank 1,235 of 1,917Llandaff North 3: deprivation rank 418 of 1,917Llandaff North 4: deprivation rank 279 of 1,917Llandaff North 5: deprivation rank 1,514 of 1,917Llandaff North 6: deprivation rank 633 of 1,917Llanishen 1: deprivation rank 1,613 of 1,917Llanishen 2: deprivation rank 554 of 1,917Lisvane and Thornhill 3: deprivation rank 1,832 of 1,917Lisvane and Thornhill 4: deprivation rank 1,845 of 1,917Lisvane and Thornhill 5: deprivation rank 1,831 of 1,917Lisvane and Thornhill 6: deprivation rank 1,704 of 1,917Llanishen 7: deprivation rank 1,653 of 1,917Lisvane and Thornhill 7: deprivation rank 1,770 of 1,917Llanishen 9: deprivation rank 1,849 of 1,917Llanishen 10: deprivation rank 619 of 1,917Llanrumney 1: deprivation rank 465 of 1,917Llanrumney 2: deprivation rank 290 of 1,917Llanrumney 3: deprivation rank 258 of 1,917Llanrumney 4: deprivation rank 394 of 1,917Llanrumney 5: deprivation rank 1,080 of 1,917Llanrumney 6: deprivation rank 108 of 1,917Llanrumney 7: deprivation rank 45 of 1,917Pentwyn 1: deprivation rank 980 of 1,917Pentwyn 2: deprivation rank 126 of 1,917Pentwyn 3: deprivation rank 55 of 1,917Pentwyn 4: deprivation rank 473 of 1,917Pentwyn 5: deprivation rank 137 of 1,917Pentwyn 6: deprivation rank 994 of 1,917Pentwyn 7: deprivation rank 1,321 of 1,917Pentwyn 8: deprivation rank 523 of 1,917Pentwyn 9: deprivation rank 1,038 of 1,917Pentwyn 10: deprivation rank 741 of 1,917Penylan 1: deprivation rank 1,713 of 1,917Penylan 2: deprivation rank 1,404 of 1,917Penylan 3: deprivation rank 1,709 of 1,917Penylan 4: deprivation rank 1,148 of 1,917Penylan 5: deprivation rank 939 of 1,917Penylan 6: deprivation rank 1,731 of 1,917Penylan 7: deprivation rank 1,787 of 1,917Penylan 8: deprivation rank 1,739 of 1,917Plasnewydd 1: deprivation rank 933 of 1,917Plasnewydd 2: deprivation rank 420 of 1,917Plasnewydd 3: deprivation rank 1,232 of 1,917Plasnewydd 4: deprivation rank 776 of 1,917Plasnewydd 5: deprivation rank 805 of 1,917Plasnewydd 6: deprivation rank 802 of 1,917Plasnewydd 7: deprivation rank 504 of 1,917Plasnewydd 8: deprivation rank 1,146 of 1,917Plasnewydd 9: deprivation rank 761 of 1,917Plasnewydd 10: deprivation rank 1,234 of 1,917Plasnewydd 11: deprivation rank 926 of 1,917Pontprennau and Old St Mellons 1: deprivation rank 877 of 1,917Pontprennau and Old St Mellons 2: deprivation rank 1,699 of 1,917Pontprennau and Old St Mellons 3: deprivation rank 1,805 of 1,917Pontprennau and Old St Mellons 5: deprivation rank 1,500 of 1,917Rhiwbina 1: deprivation rank 1,868 of 1,917Rhiwbina 2: deprivation rank 1,762 of 1,917Rhiwbina 3: deprivation rank 1,892 of 1,917Rhiwbina 4: deprivation rank 1,667 of 1,917Rhiwbina 5: deprivation rank 1,842 of 1,917Rhiwbina 6: deprivation rank 1,867 of 1,917Rhiwbina 7: deprivation rank 1,807 of 1,917Rumney 1: deprivation rank 986 of 1,917Rumney 2: deprivation rank 1,482 of 1,917Rumney 3: deprivation rank 1,392 of 1,917Rumney 4: deprivation rank 239 of 1,917Rumney 5: deprivation rank 104 of 1,917Rumney 6: deprivation rank 342 of 1,917Trowbridge 1: deprivation rank 1,477 of 1,917Trowbridge 2: deprivation rank 1,039 of 1,917Trowbridge 3: deprivation rank 123 of 1,917Trowbridge 4: deprivation rank 78 of 1,917Trowbridge 5: deprivation rank 127 of 1,917Trowbridge 6: deprivation rank 1,241 of 1,917Trowbridge 7: deprivation rank 107 of 1,917Trowbridge 8: deprivation rank 6 of 1,917Trowbridge 9: deprivation rank 380 of 1,917Trowbridge 10: deprivation rank 66 of 1,917Whitchurch and Tongwynlais 1: deprivation rank 1,889 of 1,917Whitchurch and Tongwynlais 3: deprivation rank 1,526 of 1,917Whitchurch and Tongwynlais 4: deprivation rank 1,684 of 1,917Whitchurch and Tongwynlais 5: deprivation rank 1,297 of 1,917Whitchurch and Tongwynlais 6: deprivation rank 1,848 of 1,917Whitchurch and Tongwynlais 7: deprivation rank 1,013 of 1,917Whitchurch and Tongwynlais 8: deprivation rank 1,690 of 1,917Whitchurch and Tongwynlais 9: deprivation rank 603 of 1,917Whitchurch and Tongwynlais 10: deprivation rank 1,851 of 1,917Llanishen 11: deprivation rank 954 of 1,917Llanishen 12: deprivation rank 1,064 of 1,917Pontprennau and Old St Mellons 6: deprivation rank 1,645 of 1,917Pontprennau and Old St Mellons 7: deprivation rank 1,365 of 1,917Pontprennau and Old St Mellons 8: deprivation rank 1,809 of 1,917
Deprivation rank
  • 10% most deprived
  • 10 to 20%
  • 20 to 30%
  • 30 to 50%
  • Less deprived half

Second homes

In March 2023, in the typical area here, about 10 in every 1,000 homes on the council tax list were second homes. Across Wales the typical figure was 6.

None of its areas had 50 or more in every 1,000.

These figures are for wider areas of about 7,000 people, so neighbouring neighbourhoods share a colour.

Taffs Well 1: 4Taffs Well 2: 4Adamsdown 1: 36Adamsdown 2: 36Adamsdown 3: 36Adamsdown 4: 36Adamsdown 5: 36Cyncoed 1: 10Cyncoed 2: 10Cyncoed 3: 15Cyncoed 4: 15Cyncoed 5: 15Cyncoed 6: 15Cyncoed 7: 10Gabalfa 1: 24Gabalfa 2: 24Gabalfa 3: 24Gabalfa 4: 24Heath 1: 10Heath 2: 10Heath 3: 10Heath 4: 12Heath 5: 10Heath 6: 10Heath 7: 12Heath 8: 12Lisvane and Thornhill 1: 8Lisvane and Thornhill 2: 8Llandaff North 1: 8Llandaff North 2: 8Llandaff North 3: 8Llandaff North 4: 8Llandaff North 5: 8Llandaff North 6: 8Llanishen 1: 8Llanishen 2: 8Lisvane and Thornhill 3: 9Lisvane and Thornhill 4: 8Lisvane and Thornhill 5: 9Lisvane and Thornhill 6: 9Llanishen 7: 8Lisvane and Thornhill 7: 9Llanishen 9: 8Llanishen 10: 8Llanrumney 1: 8Llanrumney 2: 9Llanrumney 3: 9Llanrumney 4: 9Llanrumney 5: 9Llanrumney 6: 8Llanrumney 7: 8Pentwyn 1: 10Pentwyn 2: 10Pentwyn 3: 11Pentwyn 4: 10Pentwyn 5: 10Pentwyn 6: 10Pentwyn 7: 10Pentwyn 8: 11Pentwyn 9: 11Pentwyn 10: 11Penylan 1: 12Penylan 2: 18Penylan 3: 18Penylan 4: 18Penylan 5: 18Penylan 6: 12Penylan 7: 12Penylan 8: 12Plasnewydd 1: 38Plasnewydd 2: 38Plasnewydd 3: 29Plasnewydd 4: 38Plasnewydd 5: 38Plasnewydd 6: 38Plasnewydd 7: 38Plasnewydd 8: 29Plasnewydd 9: 29Plasnewydd 10: 29Plasnewydd 11: 29Pontprennau and Old St Mellons 1: 8Pontprennau and Old St Mellons 2: 11Pontprennau and Old St Mellons 3: 11Pontprennau and Old St Mellons 5: 11Rhiwbina 1: 10Rhiwbina 2: 12Rhiwbina 3: 10Rhiwbina 4: 10Rhiwbina 5: 12Rhiwbina 6: 12Rhiwbina 7: 12Rumney 1: 11Rumney 2: 11Rumney 3: 11Rumney 4: 5Rumney 5: 5Rumney 6: 11Trowbridge 1: 8Trowbridge 2: 8Trowbridge 3: Fewer than 10Trowbridge 4: Fewer than 10Trowbridge 5: Fewer than 10Trowbridge 6: 8Trowbridge 7: 5Trowbridge 8: Fewer than 10Trowbridge 9: 8Trowbridge 10: 5Whitchurch and Tongwynlais 1: 13Whitchurch and Tongwynlais 3: 13Whitchurch and Tongwynlais 4: 12Whitchurch and Tongwynlais 5: 13Whitchurch and Tongwynlais 6: 13Whitchurch and Tongwynlais 7: 8Whitchurch and Tongwynlais 8: 8Whitchurch and Tongwynlais 9: 8Whitchurch and Tongwynlais 10: 13Llanishen 11: 8Llanishen 12: 8Pontprennau and Old St Mellons 6: 11Pontprennau and Old St Mellons 7: 11Pontprennau and Old St Mellons 8: 11
Second homes per 1,000 homes
  • Fewer than 10
  • 10 to 25
  • 25 to 50
  • 50 to 100
  • 100 or more

What its Members talk about

The subjects its six Members have raised most in debates, questions and committees this Senedd term.

  1. The economy and jobs74 contributions
  2. Councils and public services68 contributions
  3. The constitution67 contributions
  4. The NHS53 contributions
  5. Climate and nature49 contributions
  6. Public finances44 contributions

About these figures

Each neighbourhood (a Lower layer Super Output Area, the smallest area most official statistics are published for) is placed in the constituency that contains its centre. A constituency's figure for Welsh speakers is the average of its neighbourhoods, which have similar numbers of people.

The maps are read from DataMapWales, the Welsh Government's map service, and checked once a month for updates. Last read 26 October 2026.

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