Census records for some places have been lost or destroyed. This article list those missing census records and may identify possible census substitutes.
1841
| Place | Township | Parish | County | Population | Census Substitute |
| Abenbury Fawr | Wrexham | Denbighshire | |||
| Abenbury Fechan | Wrexham | Flintshire | |||
| Aberthin | Llanblethian | Glamorgan | |||
| Acton | Wrexham | Denbighshire | |||
| Allington | Gresford | Denbighshire | |||
| Alltgymbyd | Llanarmon yn Iâl | Denbighshire | |||
| Bangor is y Coed | Eyton | Bangor is y Coed | Denbighshire | ||
| Bangor is y Coed | Pickhill | Bangor is y Coed | Denbighshire | ||
| Bangor is y Coed | Royton | Bangor is y Coed | Denbighshire | ||
| Bangor is y Coed | Sesswick | Bangor is y Coed | Denbighshire | ||
| Bangor is y Coed | Bangor is y Coed | Bangor is y Coed | Flintshire | ||
| Belan | Ruabon | Denbighshire | |||
| Banhadlen | Llanarmon yn Iâl | Denbighshire | |||
| Bersham | Wrexham | Denbighshire | |||
| Bieston | Wrexham | Denbighshire | |||
| Blaenau | Nantglyn | Denbighshire | |||
| Bodidris | Llanarmon yn Iâl | Denbighshire | |||
| Bodigre'r Abbot | Llanarmon yn Iâl | Denbighshire | |||
| Bodigre'r Iarl | Llanarmon yn Iâl | Denbighshire | |||
| Bodylltyn | Ruabon | Denbighshire | |||
| Bodlywydd | Llanelidan | Denbighshire | |||
| Borras Hwfa | Wrexham | Denbighshire | |||
| Borras Riffri | Gresford | Denbighshire | |||
| Broughton | Wrexham | Denbighshire | |||
| Brymbo | Wrexham | Denbighshire | |||
| Bryncyme | Llanelidan | Denbighshire | |||
| Burton | Gresford | Denbighshire | |||
| Caca Dutton | Holt | Denbighshire | |||
| Caergwrle | Hope or Estyn | Flintshire | |||
| Coed Cristionydd | Ruabon | Denbighshire | |||
| Cristionydd Kenrick | Ruabon | Denbighshire | |||
| Chwileiriog | Llanarmon yn Iâl | Denbighshire | |||
| Clocaenog | Clocaenog | Denbighshire | |||
| Cefn Coed y Cymmer | Vaynor (Y Faenor) | Breconshire | |||
| Clocaenog Isa | Clocaenog | Denbighshire | |||
| Clocaenog Ucha | Clocaenog | Denbighshire | |||
| Cowbridge | Cowbridge | Glamorgan | |||
| Creigiog is Glan | Llanarmon yn Iâl | Denbighshire | |||
| Creigiog uwch Glan | Llanarmon yn Iâl | Denbighshire | |||
| Cyfnant | Llanarmon yn Iâl | Denbighshire | |||
| Cymau | Hope (or Estyn) | Flintshire | |||
| Cwmllwm | Nantglyn | Denbighshire | |||
| Derwen | Derwen | Denbighshire | |||
| Derwen Dyfanedd | Derwen | Denbighshire | |||
| Derwen Llanerch | Llanfair Dyffryn Clwyd | Denbighshire | |||
| Derwen Ysgeifiog | Derwen | Denbighshire | |||
| Dowlais or Merthyr Tydfil (Upper) |
Merthyr Tydfil | Glamorgan | Dowlais Cottage Leases | ||
| Dutton Diffeth | Holt | Denbighshire | |||
| Dutton y Bran | Holt | Denbighshire | |||
| Dyffrin | Vaynor (Y Faenor) | Brecon | |||
| Dinhinlle Isaf | Ruabon | Denbighshire | |||
| Dinhinlle Uchaf | Ruabon | Denbighshire | |||
| Erbistock | Erbistock | Denbighshire | |||
| Erbistock | Erbistock | Flintshire | |||
| Erlas | Gresford | Denbighshire | |||
| Erryrys | Llanarmon yn Iâl | Denbighshire | |||
| Erddig | Gresford | Denbighshire | |||
| Esclusham Above | Wrexham | Denbighshire | |||
| Esclusham Below | Wrexham | Denbighshire | |||
| Estyn | Hope or Estyn | Flintshire | |||
| Euarth | Llanfair Dyffryn Clwyd | Denbighshire | |||
| Faynol | Llanfair Dyffryn Clwyd | Denbighshire | |||
| Garthgynan | Llanfair Dyffryn Clwyd | Denbighshire | |||
| Garthneuoedd | Llanelidan | Denbighshire | |||
| Gelligynan | Llanarmon yn Iâl | Denbighshire | |||
| Gorton | Wrexham | Denbighshire | |||
| Gresford | Gresford | Denbighshire | |||
| Gwaunyffynnon | Llanarmon yn Iâl | Denbighshire | |||
| Gwersyllt | Gresford | Denbighshire | |||
| Hafod | Ruabon | Denbighshire | |||
| Hendre | Nantglyn | Denbighshire | |||
| Holt | Holt | Denbighshire | |||
| Isycoed | Holt | Denbighshire | |||
| Llanarmon yn Iâl | Llanarmon yn Iâl | Denbighshire | |||
| Llay (Llai) | Gresford | Denbighshire | |||
| Marchwiel | Marchwiel | Denbighshire | |||
| Marford & Hoseley | Gresford | Flintshire | |||
| Minera | Wrexham | Denbighshire | |||
| Moreton Above | Ruabon | Denbighshire | |||
| Moreton Below | Ruabon | Denbighshire | |||
| Nantclwyd | Llanelidan | Denbighshire | |||
| Nantglyn | Nantglyn | Denbighshire | |||
| Pickhill | Bangor is y Coed | Denbighshire | |||
| Plas | Nantglyn | Denbighshire | |||
| Ruabon | Ruabon | Denbighshire | |||
| Rhyddallt | Ruabon | Denbighshire | |||
| Ridley | Holt | Denbighshire | |||
| Royton | Bangor is y Coed | Denbighshire | |||
| Sesswick | Bangor is y Coed | Denbighshire | |||
| Sontley | Marchwiel | Denbighshire | |||
| Stansty | Wrexham | Denbighshire | |||
| Sutton | Holt | Denbighshire | |||
| Waun | Hendre | Nantglyn | Denbighshire | ||
| Wrexham | Wrexham | Denbighshire | |||
| Wrexham Abbot | Wrexham | Denbighshire | |||
| Wrexham Regis | Wrexham | Denbighshire |
1851
| Place | Township | Parish | County | Population | Census Substitute |
1861
| Place | Township | Parish | County | Population | Census Substitute |
| Aberporth | Llanannerch | Aberporth | Cardiganshire | ||
| Aberporth | Rectorial | Aberporth | Cardiganshire | ||
| Barog | Llanfair Talhaearn | Denbighshire | |||
| Beddgelert | Nantmor | Beddgelert | Merionethshire | ||
| Beniarth | Betws yn Rhos | Denbighshire | |||
| Berain | Llanefydd | Denbighshire | |||
| Berwyn | Caron ys Clawdd | Cardiganshire | |||
| Bettws | Bettws | Monmouthshire | |||
| Betws Abergele (Betws Yn Rhos) |
Betws Abergele (Betws Yn Rhos) |
Denbighshire | |||
| Blackmill | Llandyfodog | Glamorgan | |||
| Blaen Caron | Caron ys Clawdd | Cardiganshire | |||
| Bodlyman | Betws yn Rhos | Denbighshire | |||
| Bodynwyddog | Bryneglwys | Denbighshire | |||
| Bodysgaw | Llannefydd | Denbighshire | |||
| Brisgill | Llannefydd | Denbighshire | |||
| Broncastellan | Llanbadarn Fawr | Cardiganshire | |||
| Bryncume | Llanelidan | Denbighshire | |||
| Bryneaubychain | Llannefydd | Denbighshire | |||
| Bryneglwys | Bryneglwys | Denbighshire | |||
| Brynffanigl | Abergele | Denbighshire | |||
| Bryntangor | Bryneglwys | Denbighshire | |||
| Caron ys Clawdd | Caron ys Clawdd | Cardiganshire | |||
| Carwedfynydd | Llanefydd | Denbighshire | |||
| Cefnpost | Llanfihangel Glyn Myfyr | Merionethshire | |||
| Cefn Cymer | Llangwm | Denbighshire | |||
| Cefn | Cilcain | Flintshire | |||
| Cellan | Cellan | Cardiganshire | |||
| Cilcen | Betws yn Rhos | Denbighshire | |||
| Cilcain | Cilcain | Flintshire | |||
| Clarch | Llanbadarn Fawr | Cardiganshire | |||
| Coedmore | Pencarreg | Carmarthenshire | |||
| Croes and Berwyn | Caron ys Clawdd | Cardiganshire | |||
| Crogen Wladus | Llangollen | Denbighshire | |||
| Cymo | Llantysilio | Denbighshire | |||
| Cynnant | Llanfair Talhaearn | Denbighshire | |||
| Cysilog | Llanfihangel Glyn Myfyr | Denbighshire | |||
| Cysylltau | Llangollen | Denbighshire | |||
| Denbigh | Denbigh | Denbighshire | |||
| Denio | Denio | Caernarfonshire | |||
| Derwen | Derwen | Denbighshire | |||
| Derwen Dyfanedd | Derwen | Denbighshire | |||
| Derwen Llannerch | Llanfair Dyffryn Clwyd | Denbighshire | |||
| Derwen Ysgeifiog | Derwen | Denbighshire | |||
| Dinas Cadfel | Llannefydd | Denbighshire | |||
| Dinorben | St George | Denbighshire | |||
| Disgarth | Llamgwm | Denbighshire | |||
| Dyserth | Dyserth | Flintshire | |||
| Efenechtyd | Efenechtyd | Denbighshire | |||
| Euarth | Llanfair Dyffryn Clwyd | Denbighshire | |||
| Faynol | Llanfair Dyffryn Clwyd | Denbighshire | |||
| Garthgogo | Abergele | Denbighshire | |||
| Garthgyfannedd | Llanrwst | Denbighshire | |||
| Garthneuoedd | Llanelidan | Denbighshire | |||
| Glyn Fechan | Llansanffraid Glyn Ceiriog | Denbighshire | |||
| Gwythina | Bryneglwys | Denbighshire | |||
| Llanarmon Mynydd Mawr | Llanarmon Mynydd Mawr | Denbighshire | |||
| Llanddulas | Llanddulas | Denbighshire | |||
| Llandynnan | Llantysilio | Denbighshire | |||
| Llannefydd | Llannefydd | Denbighshire | |||
| Llanelidan | Llanelidan | Denbighshire | |||
| Llanfihangel Glyn Myfyr | Llanfihangel Glyn Myfyr | Denbighshire | |||
| Llangollen Abad | Llangollen | Denbighshire | |||
| Llangollen Fawr | Llangollen | Denbighshire | |||
| Llangollen Fechan | Llangollen | Denbighshire | |||
| Lloran | Llanarmon Dyffryn Ceiriog | Denbighshire | |||
| Llowarch | Llanarmon Dyffryn Ceiriog | Denbighshire | |||
| Llysan | Llanfihangel Glyn Myfyr | Denbighshire | |||
| Llys Dinmael | Llanfihangel Glyn Myfyr | Denbighshire | |||
| Maesegwig | Betws yn Rhos | Denbighshire | |||
| Maes yr Odyn | Llanfihangel Glyn Myfyr | Denbighshire | |||
| Meifod | St George | Denbighshire | |||
| Myfoniog | Llannefydd | Denbighshire | |||
| Nant | Abergele | Denbighshire | |||
| Nantygwryd | Llangollen | Denbighshire | |||
| Pengwern | Llangollen | Denbighshire | |||
| Peniarth | Betws yn Rhos | Denbighshire | |||
| Penporchell | Llannefydd | Denbighshire | |||
| Penyfed | Llangwm | Denbighshire | |||
| Prysllygoed | Llanfair Talhaearn | Denbighshire | |||
| Penyfed | Llangwm | Denbighshire | |||
| St George | St George | Denbighshire | |||
| Rhisgog | Llangollen | Denbighshire | |||
| Talhaearn | Llanfair Talhaearn | Denbighshire | |||
| Talybidwal | Bryneglwys | Denbighshire | |||
| Talybryn | Llanefydd | Denbighshire | |||
| Tre'r Llan | Betws yn Rhos | Denbighshire | |||
| Trofarth | Betws yn Rhos | Denbighshire | |||
| Twynnan (or Dolwen) | Llanelian yn Rhos | Denbighshire | |||
| Tybrith Uchaf | Llanrwst | Denbighshire | |||
| Vivod (Feifod) | Llangollen | Denbighshire |
1871
| Place | Township | Parish | County | Population | Census Substitute |
1881
| Place | Township | Parish | County | Population | Census Substitute |
1891
| Place | Township | Parish | County | Population | Census Substitute |
| Merthyr Tydfil (part of the top of Dowlais is missing, about 9/10 of the enumeration district) | Dowlais | Glamorgan | Register of Electors |
1901
| Place | Township | Parish | County | Population | Census Substitute |