Census Coverage Survey (CCS)

To account for people and households who may not have been counted by the census, or who may have been counted more than once or counted in the wrong place, a Coverage Assessment and Adjustment (CAA) methodology was used to identify the number of people and households affected and to adjust the 2011 Census estimates accordingly.

An important element of this methodology - the Census Coverage Survey (CCS) - took place six weeks after Census Day. This independent voluntary doorstep survey of 40,000 households (80,000 individuals) from across Scotland collected information about people and households that was then matched to census records and used to estimate the size of the census under- or overcount. The Coverage Assessment and Adjustment (CAA) methodology resulted in estimates of households and people missed by the census which were then imputed into the census database.