The 2011 Census variable and classification information document includes information about each variable used in the statistics - by table number as well as by variable - including definitions, source question, derivation, population covered and comparability with 2001.
This document will be subject to further updates as additional 2011 Census data is released.
Part 1 – Variable and classification (115 Kb Pdf) - contains an introduction to the documents.
Part 2 – Datasets (472 Kb Pdf) - provides information about the tables released to date including the table number, title, table population and the variables used in that table.
Part 3 – Standard variables (396.9 Kb Pdf) - contains detailed information about standard variables (these relate directly to a single question as it appeared on the census questionnaire.)
Part 4 – Derived variables (625.1 Kb Pdf) - contains similar information to Part 3 but for derived variables. These are variables that do not relate directly to a single question as it appeared on the census questionnaire but have been calculated from the answers provided to other questions.
Part 5 – Further information (78.9 Kb Pdf) - contains information and links to additional material to help users understand the tables.
Part 6 - Classifications (404.4 Kb Pdf) - contains the full classifications for some of the larger variables, for example Country of Birth.
Write-in response groupings (597.5 Kb Excel sheet)
When information is processed from the census questionnaires, write-in responses are given unique codes. However, it's not possible for the standard tables to show the full breakdown. Therefore written-in responses are aggregated into higher categories in certain tables. This file gives those groupings and breakdowns for the following tables:
Country of birth