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Population estimates by national park, year, sex and age

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Next update expected:2026

Updates

27th February 2026
Dataset first published.

Main information

Designation
Official statistics in development
Data provider
Office for National Statistics (ONS)
Data source
Mid-year population estimates for National Park areas

Overview

Summary of dataset and variables

This dataset provides population estimates for the national park areas in Wales for the period from 2001 onwards by sex and single year of age, together with some aggregated age groups.

On 12 March 2025, the Office for National Statistics (ONS) revised the data set for mid-2012 to mid-2020. This was due to an incorrect file being used to calculate the national park population estimates. More information can be found on the ONS website.

Population estimates for mid-2022 have been revised to account for improvements to the disaggregation of international migration from the UK level down to local authority by age and sex and updated internal migration using a more complete set of Personal Demographics Service data.

Data collection or calculation

The Office for National Statistics (ONS) publish mid-year population estimates for national parks. 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 national parks. Further information on statistical quality can be found on the ONS' website. A link can be found in the weblink section.

Related reports

Published by

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