Correspondence Files, Reference Guide

There will be three 2011 Census correspondence files that provide users with tabular data that describes the correspondence between two vintages of geographic areas.

The Dissemination Area Correspondence File will describe the relationship between the 2011 dissemination area and the 2006 dissemination area. The Dissemination Area and Land Area Correspondence File will describe the percentage of the 2011 dissemination area's land area within the boundaries of the 2006 dissemination area. The Dissemination Block Correspondence File will describe the relationship between the 2011 dissemination block and the 2006 dissemination block.

Each file contains a unique identifier for the 2011 Census geographic area and the corresponding unique identifier for the 2006 Census geographic area. In addition, a relationship flag is included which indicates the degree of correspondence between the geographic areas, facilitating a comparison between census years.