A New Zealand Ministry of Justice study showed that in 1991 just under 80% of prison inmates had no gang history, and just over 90% had no current gang membership.
Of these, 35% were Mongrel Mob and 33% Black Power, with no other individual gang having more than 5% of the imprisoned gang population.
and its membership is primarily Māori and Pacific Islander.
However organised crime gangs such as those which currently dominate the New Zealand scene mostly date from the 1970s.
'Gangsta' style gangs have been a presence in New Zealand since the early 1990s but individual gangs of this type are typically short lived.
There are numerous gangs in New Zealand, of varying criminality, organisation and ethnicity.