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Census of Population and Housing: Census dictionary
Reference period

Manufactured home estates

Manufactured home estates are land or estates developed specifically for manufactured homes, and on which manufactured homes are installed, or are to be installed.

A manufactured home is a self-contained dwelling that is built off-site and then transported to the estate for installation. This includes any associated structures that form part of the dwelling.

Within the development there must be reticulated water, sewerage, drainage and electricity connected to each lot. There must also be some form of community facilities and transport services available, and reasonable access to medical care, recreational facilities, etc.

This category of the variable Dwelling location (DLOD) specifically excludes all retirement villages.

See also Dwelling, Dwelling location (DLOD) and Dwelling type (DWTD).

Marital status

There are two variables that may be used to identify a person's marital status: Registered marital status (MSTP) and Social marital status (MDCP).

Registered marital status (MSTP) reports responses to the question 'What is the person's current marital status?' and refers to the legal status of the person, and not necessarily their current living arrangement.

Social marital status (MDCP) reports responses to two questions: 'What is the person's relationship to Person 1/Person 2?' and 'What is the person’s current marital status?'. This variable records a person's relationship status based on their current living arrangements. It identifies whether they form a couple relationship with another person living in the same usual residence, and the nature of that relationship.

See also Registered marital status (MSTP), Social marital status (MDCP) and Relationship in household (RLHP).

Median income

Median income is the level of income which divides the units in a group into two equal parts, one half having incomes above the median and the other half having incomes below the median. Medians have been estimated for each income range using data from the Survey of Income and Housing.

For information on how medians are used in the derivation of Total personal income (weekly) (INCP)

See also Household income derivation indicator (HIDD),Total family income (weekly) (FINF), Total household income (weekly) (HIND) and Total personal income (weekly) (INCP).


Mnemonics are a shorthand method of describing Census variables when specifying output requirements. Each variable relates to either a dwelling (or household), family or person. The last character of the mnemonic (D, F or P) indicates the unit to which the classification relates. For example, AGEP is the mnemonic for the person level variable, Age. The default order of the variable index in this dictionary is alphabetic order by mnemonic.

Multiple family households

For the 2021 Census, a maximum of three families can be identified in one household. In cases where more than three families are identified in a household, the first three families are coded and other persons are classified as either related family members of the primary family or non-family members.

Relevant variables are Family composition (FMCF), Family number (FNOF) and Relationship between families (FRLF).

See also Family and Household.