A five digit code which is assigned alphabetically to each locality within each State. The code list used for allocation of locality codes to CD's is based on an updated version of the 1966 locality tabulation. Initially, in 1966, codes started at 00010 for the first locality in each State and progressed, in tens ie.00010, 00020, 00030 etc.

For the 1971 Census, localities that had to be added were given intermediate codes eg 00015 where only one was inserted and 00013, 00015, 00017 etc where more than one was inserted. The aim was to leave sufficient space in the code list to allow more codes to be inserted at subsequent censuses while maintaining a consistent alphabetic code within each State. The Geographic Code List (2141.0) contains a list of locality names corresponding to the codes.


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