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It is related to the UK gridded population dataset, sharing the same Output Area-level census inputs, Land Cover Map 2021 land-use classes, and 1 km British National Grid (OSGB36) output framework. This dataset separates the gridded estimates into urban and rural populations, based on the rural/urban classification of the source Output Areas.\n\nIn addition to this simple, binary urban/rural split, the dataset retains more detailed classifications, where available. England & Wales uses a 6-fold classification (Urban, Larger Rural and Smaller Rural, each split by accessibility to a larger town or city). Scotland an 8-fold classification that further distinguishes Accessible, Remote and Very Remote areas by drive time to the nearest substantial settlement. Northern Ireland has no official Output Area/Data Zone-level rural-urban classification, so only the binary Urban/Rural split (derived from NISRA's 2015 Settlement Development Limits) is available there.\n\nEach 1 km grid cell also includes the underlying proportion of urban and rural Output Areas, allowing the population estimates to be compared to the area coverage. 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