Prison facts and statistics - March 2011

This page shows statistical information on the:

Prisoner population by location and status
(as at 31 March 2011)
Prison Status Total
Remand Sentenced
Male 1813 6386 8199
ACRP 349 60 409
Auckland 1 640 641
Christchurch Men's 256 573 829
Hawke's Bay 136 472 608
Invercargill 43 113 156
Manawatu 82 206 288
Mt Eden 217 53 270
New Plymouth 25 81 106
Northland 134 373 507
Otago 76 336 412
Rimutaka 127 761 888
Rolleston 0 259 259
Spring Hill 1 785 786
Tongariro/Rangipo 0 438 438
Waikeria 302 662 964
Wanganui 64 457 521
Wellington 0 117 117
Female 112 444 556
Arohata 21 119 140
Auckland Women's 73 237 310
Christchurch Women's 18 88 106
Total 1925 6830 8755

Total prison population

 A graph showing the total prison population since July 2008.

View a larger version of the total prison population graph.


Percentage of prisoners in different age groups

  The prison population was made up of the following age ranges as at March 2011: 5.6% of prisoners were 15-19, 19.8% were 20-24, 16.2% were 25-29, 14% were 30-34, 12.7% were 35-39, 12.2% were 40-44, 8.7% were 45-49, 5.2% were 50-54, 2.3% were 55-59, 1.5% were 60-64, 1% were 65-69 and 0.6% were 70 or older.


Percentage of sentenced prisoners according to most serious* offence type

  The percentage of prisoners serving time for different types of offences as at March 2011 was: 40.5% had a most serious offence involving violence, 20.5% have a most serious offence of a sexual nature, 17.6% had a most serious offence involving dishonesty and 10.7% had a most serious offence involving drugs and anti-social offending.

* Prisoners may be convicted of offences across multiple categories. This information is based on the most serious offence a prisoner is convicted of.


Ethnicity of prisoners

  The percentage of prisoners of different ethnicities as at March 2011 was: 51.3% Maori, 33.7% European, 10.8% Pacific peoples, 2.7% asian and 1.1% other.


Security classification of sentenced prisoners

 The percentages of prisoners of different security classifications as at March 2011 was: 19.5% minimum, 22% low, 32.7% low medium, 21.2% high, 1.6% maximum and 3% unclassified.


Percentage of sentenced prisoners on indeterminate sentences*

 As at March 2011, 10.7% of the prison population were on preventive detention or life sentences that have no end date.

* Indeterminate sentences refer to preventive detention and life sentences that have no end date. Prisoners on these sentences are only released at the discretion of the Parole Board and are subject to recall to prison if released on parole.


International rates of imprisonment

Number of prisoners per 100,000 population
United States 748
South Africa 324
New Zealand 199
Scotland 153
England and Wales 152
Australia 134
Canada 117
Norway 71
Figures reflect the prison and national populations from mid 2009 or mid 2010.

Other facts and figures

  • Approximately 50 per cent of those released or paroled do not return to prison within four years
     
  • The average annual cost of housing a prisoner is $90,936 or $249.14 per day
     
  • Prisoners are fed at a cost of less than $5 a day per person
      
  • 67 per cent of sentenced prisoners are engaged in employment activity
     
  • 55 per cent of sentenced prisoners are engaged in rehabilitation activity
     
  • 23 per cent of the total prison population are gang members
     
  • Corrections provided 44,596 pre-sentence reports to the judiciary in the 2008/09 financial year

* Most of the figures under Other statistics come from the 2008/09 financial year or from a snapshot at 30 June 2009. Re-imprisonment figures are from a 2008 report Reconviction patterns of released prisoners: A 48-month follow up analysis