Population estimates by local authority, year, sex and age

Standard shorthand is used in this table: [t] = total.

Data values	Data description	Year	Age	Sex	Area
884	Population	Mid-year 1991	Age 41	Female	Powys
1,798 [t]	Population	Mid-year 1991	Age 42	Persons	Powys
1,565	Population	Mid-year 1991	Age 41	Male	Swansea
867	Population	Mid-year 1991	Age 41	Female	Wrexham
28,209	Population	Mid-year 1991	Age 41	Female	East Midlands
1,857 [t]	Population	Mid-year 1991	Age 42	Persons	Wrexham
107,404 [t]	Population	Mid-year 1991	Age 41	Persons	South East
1,132	Population	Mid-year 1991	Age 41	Male	Carmarthenshire
33,018	Population	Mid-year 1991	Age 41	Male	Yorkshire and The Humber
1,085	Population	Mid-year 1991	Age 41	Female	Flintshire
633	Population	Mid-year 1991	Age 41	Female	Torfaen
33,101	Population	Mid-year 1991	Age 41	Female	Yorkshire and The Humber
33,814 [t]	Population	Mid-year 1991	Age 41	Female	Scotland
2,207 [t]	Population	Mid-year 1991	Age 42	Persons	Flintshire
652,742 [t]	Population	Mid-year 1991	Age 41	Persons	England
87,969 [t]	Population	Mid-year 1991	Age 41	Persons	London
700	Population	Mid-year 1991	Age 41	Male	Gwynedd
791	Population	Mid-year 1991	Age 41	Male	Pembrokeshire
469	Population	Mid-year 1991	Age 41	Male	Blaenau Gwent
45,718	Population	Mid-year 1991	Age 41	Male	North West
388,135 [t]	Population	Mid-year 1991	Age 41	Male	United Kingdom
613	Population	Mid-year 1991	Age 41	Female	Denbighshire
819	Population	Mid-year 1991	Age 41	Female	Vale of Glamorgan
490	Population	Mid-year 1991	Age 41	Female	Blaenau Gwent
1,928	Population	Mid-year 1991	Age 41	Female	Cardiff
45,869	Population	Mid-year 1991	Age 41	Female	North West
44,442	Population	Mid-year 1991	Age 41	Female	London
390,835 [t]	Population	Mid-year 1991	Age 41	Female	United Kingdom
1,013 [t]	Population	Mid-year 1991	Age 42	Persons	Isle of Anglesey
1,248 [t]	Population	Mid-year 1991	Age 42	Persons	Denbighshire
1,255 [t]	Population	Mid-year 1991	Age 41	Persons	Torfaen
3,871 [t]	Population	Mid-year 1991	Age 41	Persons	Cardiff
66,119 [t]	Population	Mid-year 1991	Age 41	Persons	Yorkshire and The Humber
72,623 [t]	Population	Mid-year 1991	Age 41	Persons	East
67,363 [t]	Population	Mid-year 1991	Age 41	Persons	Scotland
502	Population	Mid-year 1991	Age 41	Male	Isle of Anglesey
1,038	Population	Mid-year 1991	Age 41	Male	Flintshire
461	Population	Mid-year 1991	Age 41	Male	Ceredigion
841	Population	Mid-year 1991	Age 41	Male	Vale of Glamorgan
1,246	Population	Mid-year 1991	Age 41	Male	Caerphilly
898	Population	Mid-year 1991	Age 41	Male	Newport
17,189	Population	Mid-year 1991	Age 41	Male	North East
36,301	Population	Mid-year 1991	Age 41	Male	East
31,956	Population	Mid-year 1991	Age 41	Male	South West
19,670 [t]	Population	Mid-year 1991	Age 41	Female	Wales
688	Population	Mid-year 1991	Age 41	Female	Conwy
1,117	Population	Mid-year 1991	Age 41	Female	Carmarthenshire
884	Population	Mid-year 1991	Age 41	Female	Bridgend
406	Population	Mid-year 1991	Age 41	Female	Merthyr Tydfil
1,246	Population	Mid-year 1991	Age 41	Female	Caerphilly
647	Population	Mid-year 1991	Age 41	Female	Monmouthshire
861	Population	Mid-year 1991	Age 41	Female	Newport
327,525 [t]	Population	Mid-year 1991	Age 41	Female	England
17,696	Population	Mid-year 1991	Age 41	Female	North East
35,544	Population	Mid-year 1991	Age 41	Female	West Midlands
36,322	Population	Mid-year 1991	Age 41	Female	East
54,087	Population	Mid-year 1991	Age 41	Female	South East
32,255	Population	Mid-year 1991	Age 41	Female	South West
9,826 [t]	Population	Mid-year 1991	Age 41	Female	Northern Ireland
40,358 [t]	Population	Mid-year 1991	Age 42	Persons	Wales
1,571 [t]	Population	Mid-year 1991	Age 42	Persons	Gwynedd
1,382 [t]	Population	Mid-year 1991	Age 42	Persons	Conwy
2,492 [t]	Population	Mid-year 1991	Age 41	Persons	Caerphilly
959 [t]	Population	Mid-year 1991	Age 41	Persons	Blaenau Gwent
1,299 [t]	Population	Mid-year 1991	Age 41	Persons	Monmouthshire
1,759 [t]	Population	Mid-year 1991	Age 41	Persons	Newport
34,885 [t]	Population	Mid-year 1991	Age 41	Persons	North East
91,587 [t]	Population	Mid-year 1991	Age 41	Persons	North West
56,743 [t]	Population	Mid-year 1991	Age 41	Persons	East Midlands
71,201 [t]	Population	Mid-year 1991	Age 41	Persons	West Midlands
64,211 [t]	Population	Mid-year 1991	Age 41	Persons	South West
778,970 [t]	Population	Mid-year 1991	Age 41	Persons	United Kingdom
19,538 [t]	Population	Mid-year 1991	Age 41	Persons	Northern Ireland
19,657 [t]	Population	Mid-year 1991	Age 41	Male	Wales
614	Population	Mid-year 1991	Age 41	Male	Conwy
588	Population	Mid-year 1991	Age 41	Male	Denbighshire
865	Population	Mid-year 1991	Age 41	Male	Wrexham
901	Population	Mid-year 1991	Age 41	Male	Powys
950	Population	Mid-year 1991	Age 41	Male	Neath Port Talbot
862	Population	Mid-year 1991	Age 41	Male	Bridgend
1,602	Population	Mid-year 1991	Age 41	Male	Rhondda Cynon Taf
415	Population	Mid-year 1991	Age 41	Male	Merthyr Tydfil
622	Population	Mid-year 1991	Age 41	Male	Torfaen
652	Population	Mid-year 1991	Age 41	Male	Monmouthshire
1,943	Population	Mid-year 1991	Age 41	Male	Cardiff
325,217 [t]	Population	Mid-year 1991	Age 41	Male	England
28,534	Population	Mid-year 1991	Age 41	Male	East Midlands
35,657	Population	Mid-year 1991	Age 41	Male	West Midlands
43,527	Population	Mid-year 1991	Age 41	Male	London
53,317	Population	Mid-year 1991	Age 41	Male	South East
33,549 [t]	Population	Mid-year 1991	Age 41	Male	Scotland
9,712 [t]	Population	Mid-year 1991	Age 41	Male	Northern Ireland
467	Population	Mid-year 1991	Age 41	Female	Isle of Anglesey
715	Population	Mid-year 1991	Age 41	Female	Gwynedd
440	Population	Mid-year 1991	Age 41	Female	Ceredigion
820	Population	Mid-year 1991	Age 41	Female	Pembrokeshire
1,555	Population	Mid-year 1991	Age 41	Female	Swansea
919	Population	Mid-year 1991	Age 41	Female	Neath Port Talbot
1,586	Population	Mid-year 1991	Age 41	Female	Rhondda Cynon Taf
932 [t]	Population	Mid-year 1991	Age 42	Persons	Ceredigion

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Main information

• Most recent update: 25 September 2025
• Next update expected: July 2026
• Designation: Accredited official statistics
• Data provider: Office for National Statistics (ONS)
• Data source: Mid-year population estimates

Data notes

Overview

• Summary of dataset and variables:

  This dataset provides population estimates for the local authorities in Wales, the English regions and the UK countries for the period from 1991 onwards by sex and single year of age.

  It should be noted that for mid-2020 there are some definitional changes (particularly affecting the migration components) compared with mid-2019 population estimates data and it is advised users read the Quality and Methodology Information section on the Office for National Statistics website.

  For Wales, England and Northern Ireland, the mid-2021 population estimates are the first population estimates to be based on the 2021 censuses for these countries. For Scotland, the census was moved to 2022. The mid-2022 population estimates are the first population estimates to be based on the 2022 Census for Scotland.

  On 23 November 2023, the data set from 2012 to 2020 for Wales and England were rebased to be consistent with the results of Census 2021. Northern Ireland published rebased 2012 to 2020 data on 29 June 2023. Scotland published rebased 2012 to 2020 data on 9 July 2024.

  On 15 July 2024 estimates for mid-2022 were revised by the ONS to account for updated estimates of international migration for Wales and England.

  On 30 July 2025 estimates for mid-2022 and mid-2023 were revised by the ONS to account for updated estimates of international migration for Wales and England.

  Internal migration estimates for mid-2023 have been produced using a different method to previous years, following a change to the variables available in the Higher Education Statistics Agency data.

• Data collection or calculation:

  The Office for National Statistics (ONS) publish mid-year population estimates for Wales and England as a whole. Further information on how the data are calculated can be found on the ONS' website. A link can be found in the weblink section.

• Statistical quality:

  The Office for National Statistics (ONS) publish mid-year population estimates for Wales and England as a whole. Further information on statistical quality can be found on the ONS' website. A link can be found in the weblink section.

• Related reports:
  • Mid-year population estimates for Wales bulletin, Welsh Government
  • Mid-year population estimates bulletin, ONS
  • Quality and Methodology Information, ONS
  • Mid-year population estimates for Scotland, NRS
  • Mid-year population estimates for Northern Ireland, NISRA

Published by

• Organisation: Welsh Government
• Contact email: stats.popcensus@gov.wales

Metadata

The metadata for this dataset is not included when you download the data. You can download this separately. This contains all the information from the 'About this dataset' tab.