UK 2011 Census Demographics Harmonized Data standardizes census results from England, Northern Ireland, Scotland, and Wales. It contains over 900 variables across a range of topics for all Output Areas (England/Scotland/Wales) and Small Areas (Northern Ireland). Output Area/Small Area-level data sets provide high accuracy and flexibility since they are provided at a very fine level of spatial resolution, averaging approximately 125 households per area. Data can be analyzed at this level or aggregated to another spatial level. Census data has been aggregated at the Postcode Sector level. Postcode Sector aggregates are updated on an annual basis.