4512.0 - Corrective Services, Australia, Jun 2008 Quality Declaration 
ARCHIVED ISSUE Released at 11:30 AM (CANBERRA TIME) 18/09/2008   
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1 This publication presents statistical series on persons held in either adult corrective services custody or who are serving adult community-based orders in Australia. It contains data on the number of persons by their sex, Indigenous status, type of custody, legal status and sentence type; the number of sentenced persons received into corrective services custody each month; and the number of federal prisoners. Experimental data on Indigenous persons in community based corrections are also available in the Appendix.

2 Statistics presented in this publication are compiled in three ways:

  • Average daily prisoner population: Counts taken on each day of the month are summed and divided by the number of days in that month to determine the average daily prisoner population for that month. The average daily periodic detainee population is a count of persons on periodic detention on each day a centre is open, divided by the number of days a centre is open.
  • Sentenced prisoner reception figures: Counts are provided each month on the number of receptions where a prisoner is received as a sentenced prisoner. This includes prisoners with a change of legal status from unsentenced to sentenced.
  • First day of the month prisoner population: Counts of prisoners and persons serving community-based corrections orders, taken on or near the first day of the month (see paragraphs 4 and 5).

3 Although national standards and classifications are used in the compilation of these statistics, some discrepancies remain between the states and territories. These are due to legislative and procedural differences between jurisdictions and the way that these differences are reflected in agencies' administrative data systems. As part of its quality assurance strategy, the ABS is working with corrective services agencies to minimise the effect of these differences.


4 The reference period for average daily prisoner population statistics and sentenced reception counts is the complete reference month. The reference date for all other figures is the first day of the reference month. However, not all states and territories report strictly according to this 'first day of the month' rule:

  • The Western Australian, Victorian and Australian Capital Territory prisoners in New South Wales prisons populations are counted as at midnight on the last day of the month. In these cases the figures provided are taken to represent the prison population at the beginning of the following month to align with practices in other states and territories.

5 Calculation of figures for the entire quarter and entire year varies depending on the counting unit and method of counting prisoners:
  • Average daily figures: Figures are calculated by weighting the average according to the number of days in each month or year.
  • First day of the month: Figures are simple averages. For quarterly figures, the sum of the monthly data is divided by three; for yearly figures, the figures for each month are added and the total divided by twelve.
  • Sentenced receptions: Figures are totals of each month.
  • These figures may be subject to rounding.


6 The scope of the statistics in this publication includes all persons remanded or sentenced to adult custodial corrective services agencies (including Work Outreach Camps and Community Custody Centres in Queensland), or who are serving adult community-based orders in each state and territory in Australia.

7 Counts of prisoners in the following custodial facilities are included in the collection:

  • gazetted prisons in all jurisdictions;
  • periodic detention centres in New South Wales and the Australian Capital Territory;
  • community custody centres and work outreach camps in Queensland;
  • cells in court complexes administered by corrective services in New South Wales;
  • transitional centres in New South Wales; and
  • lock-ups in Western Australia operated by the police but designated as a prison by the Chief Executive Officer of Corrective Services.

8 The prisons and community corrections collection excludes the following custodial facilities:
  • police lockups, police prisons and cells in court complexes not administered and controlled by corrective services;
  • gazetted police prisons in the Northern Territory;
  • juvenile detention centres, including those under the authority of adult corrective services;
  • immigration detention centres; and
  • military prisons.

9 This collection includes counts of persons remanded or sentenced to adult custody facilities, or directed to serve community based orders administered by adult corrective services agencies. In all states and territories except Queensland, persons are considered adults if aged 18 years and over. In Queensland persons are considered adults if aged 17 years and over. The vast majority of persons counted in the collection are adults. However, juveniles may be included in exceptional circumstances.

10 Since December 2004, the Kariong Juvenile Correctional Centre in New South Wales has operated under the authority of adult corrective services. The population at Kariong Juvenile Correctional Centre may include adult persons as well as juveniles. New South Wales includes juveniles based in Kariong in this collection, however, this facility accounts for less than 0.5% of the New South Wales prisoner population.

11 Federal prisoners include those persons charged and sentenced under a Commonwealth statute, and those persons who are charged and sentenced under the laws of another country but transferred to an Australian prison to serve their sentence under the International Transfer of Prisoners Act 1997 (Cwlth). To give practical effect to this legislation in Australia, the framework was introduced in January 2003. For the purposes of this publication, federal sentenced prisoners are those persons who are recognised by the Criminal Law Division of the Australian Government Attorney-General's Department as having been charged and sentenced under a Commonwealth statute, or transferred from another country to serve their sentence in Australia.

12 With the exception of Victoria and Tasmania, community-based corrections includes those persons with breached or suspended orders.


13 Statistics in this publication are derived from information provided to the ABS from administrative records held by corrective services agencies within each state and territory. Statistics on federal prisoners are derived from records kept by the Criminal Law Division of the Australian Government Attorney-General's Department.


14 Statistics for persons held in custody are presented by the state or territory in which they were held and therefore may not be the sentencing jurisdiction. The only exception to this are data for federal sentenced prisoners. These are presented by the state or territory in which they were sentenced, not where they were held in custody.

15 Sentenced prisoners who have other offences that are unsentenced are counted as sentenced. Prisoners may be unsentenced because they are awaiting the outcome of their trial, convicted but awaiting sentence, or awaiting deportation.

16 If an offender has two or more different types of community-based orders operating simultaneously, then each order will be counted. If two or more community-based orders are of the same type, these orders together will only be counted as one order.


17 Persons sentenced to full-time custody by the Australian Capital Territory are usually held in New South Wales prisons. The Australian Capital Territory has two remand centres for unsentenced prisoners and a periodic detention centre. During 2000 the Australian Capital Territory commenced detaining prisoners sentenced for fine default only at their remand centres. Unsentenced Australian Capital Territory prisoners may also be detained in New South Wales prisons. A new custodial facility, the Alexander Maconochie Centre, is expected to open in the Australian Capital Territory in September 2008.

18 To provide greater understanding of the number of prisoners attributed to the Australian Capital Territory, while presenting an accurate picture of the New South Wales prisoner population, statistics relating to Australian Capital Territory prisoners in New South Wales prisons are presented as a subset of the New South Wales figures.

19 Imprisonment rate data for the Australian Capital Territory are included in the publication and are calculated on the basis of the total number of Australian Capital Territory prisoners (i.e. Australian Capital Territory prisoners held in New South Wales prisons, and Australian Capital Territory prisoners held in the Australian Capital Territory) divided by the estimated resident Australian Capital Territory adult population and multiplied by 100,000. For New South Wales, the imprisonment rate is based on the count of New South Wales prisoners, excluding Australian Capital Territory prisoners held in New South Wales prisons, divided by the estimated resident New South Wales adult population and multiplied by 100,000. Time series data have also been derived on this basis.


20 Imprisonment and community-based corrections rates enable comparisons of prisoner numbers to be made across states and territories. Prisoner and community-based corrections rates are expressed per 100,000 adult population. Imprisonment rates are calculated based on two different counting concepts (average daily and first day of the month), as a result there may be variations in imprisonment rates presented in this publication.

21 In this publication the population figures used in the calculation of rates are for persons aged 18 years and over for all states and territories except Queensland where the population is persons aged 17 years and over (see paragraph 9).

22 Rates for the total adult prisoner population and persons in community-based corrections are calculated using the estimated resident population (ERP) for each of the states and territories. All estimates for the Australian Capital Territory exclude Jervis Bay Territory. All estimates for Australia exclude the external territories of Christmas Island and the Cocos (Keeling) Island. As the population changes over time the denominator used for the calculation of rates varies, depending on the reference period. The most current ERP data available at the time of publication are used to calculate rates as follows:

  • for the March quarter, ERP is from the previous September quarter;
  • for the June quarter, ERP is from the previous December quarter;
  • for the September quarter, ERP is from the previous March quarter;
  • for the December quarter, ERP is from the previous June quarter; and
  • annual rates are an average of the rates of the contributing quarters.

23 The ERP series are revised every five years to incorporate additional information available from the latest Census of Population and Housing. The rates per 100,000 adult persons presented in this issue have been calculated using different ERP counts as follows:
  • 2006-2008 rates are calculated using preliminary ERP data based on the 2006 Census of Population and Housing; and
  • 2005 rates are calculated using ERP data based on the 2006 Census of Population and Housing.

24 For population estimates and information on the methodology used to produce the ERP, see Australian Demographic Statistics (cat.no.3101.0).

Indigenous imprisonment rates

25 Rates for the Indigenous adult population in this publication are based on the low series projections for 30 June of the relevant calendar year (refer to Experimental Estimates and Projections, Aboriginal and Torres Strait Islander Australians, 30 June 1991 to 30 June 2009 (cat.no.3238.0)). These projections are based on the 2001 Census of Population and Housing. New series of Indigenous population projections are scheduled for release in 2009 and will be based on the 2006 Census of Population and Housing.

26 The low series is one of two series of projections that have been published for the years 2002 to 2009.

  • The low series assumes no 'unexplained growth' - that is, the Indigenous population recorded in the 2001 Census of Population and Housing is projected to change only as a result of births and deaths (natural increase) and, for the states and territories, as a result of interstate migration.
  • The high series assumes that there will be 'unexplained growth' in the Indigenous population - that is, the Indigenous population is projected to change as a result of an unexplained component in addition to the effects of natural increase and interstate migration. The size of the unexplained component is based on the 'unexplained growth' observed between the 1996 and 2001 Censuses.

27 The decision to use the low series as the denominator in the calculation of Indigenous imprisonment rates from 2002 followed consultation with the National Corrective Services Statistics Unit Advisory Group and other stakeholders.


28 The ABS is currently evaluating the use of the ABS Indigenous identification standard in Corrective Services agencies (both custodial and community-based corrections). Whilst the ABS has published Indigenous status data in Corrective Services collections for a number of years, quality assurance is required to better understand the level of accuracy over time.

29 The quality of the Indigenous status information collected and recorded in Corrective Services agencies is assessed against the ABS Standard Indigenous Question (SIQ). The SIQ is based upon self-identification by the individual who comes into contact with Corrective Services agencies. The SIQ requires individuals to be asked "Are you of Aboriginal or Torres Strait Islander origin?" The answers to the SIQ can be 'No', 'Yes, Aboriginal', or 'Yes, Torres Strait Islander'. If the offender is of Aboriginal and Torres Strait Islander origin, both responses should be identified. If an offender does not supply an answer to this question, or is not asked, the Indigenous status field should be recorded as 'not stated'. The standard also requires that the SIQ fields are mandatory in corrective services agency recording systems in order to reinforce the asking of the question and assist in the maintenance of data quality.

30 As a result, the minimum output categories required in systems are:

  • Aboriginal, but not Torres Strait Islander origin
  • Torres Strait, but not Aboriginal origin
  • Both Aboriginal and Torres Strait Islander origin
  • Neither Aboriginal nor Torres Strait Islander origin
  • Not stated/inadequately described

31 For custodial corrections, initial indications are that corrective services agencies in all states and territories, with the exception of Western Australia, ask the SIQ as described above.

32 There are however differences across the states and territories in relation to the recording processes for custodial data. In Tasmania, the Northern Territory and the Australian Capital Territory, individuals are asked the SIQ on each reception into corrective services custody, and it is mandatory to enter a response to this field in their recording systems. Victoria and Queensland do not re-ask the SIQ for every subsequent involvement that an individual has with corrective services, and data may also be sourced from other justice sources. In South Australia, it is a requirement for persons to be asked upon reception on each occasion in which they enter custody; however, it is not a mandatory field in their recording system. New South Wales does not have Indigenous status as a mandatory field in their recording systems and does not always re-ask the question for subsequent involvements. Western Australia does not currently comply with any component of the SIQ. For more information about Indigenous identification in community-based corrections refer to Appendix, page 36.

33 Some persons in custody are recorded with an unknown Indigenous status on the information systems of corrective agencies as their status has not been able to be obtained. Persons with Indigenous status unknown are excluded from tables 6, 7, 12 and 13. Counts of persons with an unknown Indigenous status are included in all other tables. Unknowns account for just over 1% of all records.


New South Wales

34 In March 2008, the administrative classification of the Wellington Correctional Centre was altered. The classification was changed from 'open' to 'secure' for 75% of the facility to reflect the change in the profile of inmates held. As such, the proportion of persons in secure and open custody altered in the March quarter 2008 compared to previous quarters.

35 The administrative classification of the following NSW correctional facilities was altered at 1 July 2005: Cooma, Dilwynia, Parramatta and Berrima. These facilities changed classification from 'open' to 'secure' to reflect alterations in the profile of inmates held, and the operational requirements of those centres. As such, the proportion of persons in secure and open custody altered in the September quarter 2005 compared to previous quarters.


36 The State government introduced an amnesty from February 2006 to May 2006 to encourage payment of unpaid fines. This resulted in a decrease in the number of persons serving a community-based order for fine default, particularly for the September quarter 2006.

37 In March 2006, Victoria opened Marngoneet Correctional Centre, Lara. The focus of this facility is to provide intensive treatment and offender management programs for males who have a minimum of six months of their sentence left to serve when they arrive there. The new Metropolitan Remand Centre at Ravenhall was opened in April 2006. The facility provides increased capacity to hold prisoners awaiting trial or sentencing.

38 On 1 July 2005 the Children and Young Persons (Age Jurisdiction) Act 2004 came into force in Victoria. This Act changed the definition of a child from a person under 17 years of age to a person under 18 years of age. As a consequence the definition of an adult also changed for corrective services data to a person aged 18 years and over. Imprisonment rates for the September and December quarters 2005, and March quarter 2006 have been revised as a consequence. Data prior to 1 July 2005 includes persons aged 17 years.


39 Quality assurance work conducted in Queensland during the September quarter 2007 resulted in the identification and elimination of duplicate and other records for the month of July 2007. Caution should be exercised when comparing data prior to the September quarter 2007.

40 The Corrective Services Act 2006 (Qld) commenced on 26 August 2006. One key provision in the new legislation relates to the management of offenders subject to Court-ordered Parole. This new order ensures that offenders serve 100% of their sentence under supervision, either in a correctional centre or under community supervision. This new order provides courts with the power to specify a parole release date for persons sentenced to a term of imprisonment of 3 years or less. Technical breaches of parole orders are no longer heard by a parole board and can often result in a person serving the remainder of their original sentence in custody. Court-ordered Parole is not available to sex offenders or serious violent offenders.

41 In September 2005 Queensland implemented a new offender management system - the Integrated Offender Management System (IOMS). As a result data for the September quarter 2005, December quarter 2005, and March quarter 2006 were revised in June quarter 2006.

South Australia

42 Data on community-based correction orders extracted from the South Australian information system from the June quarter 2005 may be subject to data processing time lags.

Western Australia

43 Caution should be exercised when comparing community-based correction orders in Western Australia prior to the March quarter 2007 as data may have been slightly overstated.

44 In the June quarter 2005, Western Australia implemented a strategy to reduce the number of fine defaulters being taken into custody by offering alternative means of payment. This has resulted in a decrease in the number of sentenced receptions into custody for the September quarter 2005.


45 Tasmania introduced a trial of new orders for bail, suspended sentence and drug treatment as part of its Court Mandated Diversion program. The trial commenced mid July 2007 and is expected to continue for 12 months.

46 The new Risdon Prison Complex in Tasmania was opened on 28 August 2006. This complex includes the Mary Hutchison Women's Prison which was opened in May 2006. A new men's maximum/medium security facility was also built within the complex.

Australian Capital Territory

47 In September 2005, home detention orders were discontinued as a sentencing and remand option in the Australian Capital Territory.

48 From 1 July 2005, Australian Capital Territory periodic detainees who were in breach of an order for more than three months were excluded from counts. Consequently, the periodic detainee population decreased.


ABS Publications

49 Other ABS publications that may be of interest include:

      Australian Demographic Statistics (cat.no.3101.0) - issued quarterly
      Australian Social Trends (cat.no.4102.0) - issued annually
      Australian Standard Offence Classification (cat.no.1234.0) - irregular
      Crime and Safety, Australia (cat.no.4509.0) - released 26 April 2006
      Criminal Courts, Australia (cat.no.4513.0) - issued annually
      Experimental Estimates and Projections, Aboriginal and Torres Strait Islander Australians, 30 June 1991 to 30 June 2009 (cat. no. 3238.0)
      General Social Survey: Summary Results, Australia (cat.no.4159.0) - irregular
      Information Paper: Measuring Crime Victimisation, Australia: The Impact of Different Collection Methodologies (cat.no.4522.0.55.001) - single issue
      Information Paper: National Criminal Justice Statistical Framework (cat.no. 4525.0) - single issue
      Information Paper: National Information Development Plan for Crime and Justice Statistics 2005 (cat.no.4520.0) - single issue
      Measures of Australia's Progress (cat.no.1370.0) - released 31 May 2006
      Personal Fraud Survey (cat.no.4528.0) - released 27 June 2008
      Personal Safety Survey (cat.no.4906.0) - released 21 August 2006
      Prisoners in Australia (cat.no.4517.0) - issued annually
      Recorded Crime - Victims, Australia (cat.no.4510.0) - issued annually
      Sexual Assault in Australia: A Statistical Overview (cat.no.4523.0) - single issue
      Year Book Australia (cat.no.1301.0) - irregular

50 Current publications and other products released by the ABS are available from the ABS website <https://www.abs.gov.au>. The ABS also issues a daily Release Advice on the website that details products to be released in the week ahead. The National Centre for Crime and Justice Statistics releases Crime and Justice News (cat. no. 4500.0), an annual newsletter that is published on the ABS website. The Centre can be contacted by email through <crime.justice@abs.gov.au>.

Non-ABS Publications

51 Non-ABS sources that may be of interest include:

      Australian Institute of Criminology, List of Publications - irregular
      Crime Research Centre, University of Western Australia, Crime and Justice Statistics for Western Australia - issued annually
      Department of Corrective Services, New South Wales, NSW Inmate Census - irregular
      Department of Justice, Northern Territory, Northern Territory Quarterly Crime and Justice Statistics - issued quarterly
      Department of Justice, Victoria, Statistical Profile of the Victorian Prison System - issued annually
      NSW Bureau of Crime Statistics and Research, New South Wales Criminal Courts Statistics - issued annually
      Office of Crime Statistics and Research, South Australia, Crime and Justice in South Australia - issued annually
      Steering Committee for the Review of Commonwealth/State Service Provision, Report on Government Services - issued annually