Census of Population and Housing 1986: Collection District Master File

What is the CDMF?

Record structure and Field Data Code Groups

Download an .rtf version of documents related to the CDMF

What is the CDMF?

The Collection District Master File (CDMF) stores basic counts and associated geographic codes for every collection district (CD) in Australia, for tabulation, field control, processing control and general research purposes, and to facilitate linkage to previous Census data.

Included on this file for each CD are the number of persons and dwellings, area in hectares, its State or Territory, Census division and subdivision, Commonwealth Electoral Division, Statistical Local Area (SLA), legal LGA, Statistical Region and Statistical District, Section of State, Locality, State Electoral Division, Postcode, CD Comparability indicators, area in hectares and latitude and longitude of its centroid. The CDMF was first produced for the 1966 Census and has been produced for each census since. All census counts on the file are on the basis of place of enumeration. No usual residence counts are provided.

Where it is impossible or especially difficult to specify a geographic location for persons on census night because, for example, they were aboard ship in Australian waters, on off-shore oil rigs, drilling platforms and the like, or on an overnight journey by train or bus, they were allocated to a CD called 'migratory'. There is one such CD for each State and the Northern Territory.

The Master File contains, for each CD, one record of data. For the 1986 Census 29,632 CDs were delineated throughout Australia. The Master File therefore contains 29,632 logical records, each of 145 characters in length, containing 41 cells of CD information.


Record Structure

The 41 cells of information for the CD Master File are in one physical record for each logical record in the format:


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