Corrections in NZ – Prisoner Population by Ethnic Group and Sex – March 2018 – December 2024

New Zealand’s Prison Demographics Reveal Deepening Disparities

The most recent data from the Department of Corrections highlights significant demographic trends within New Zealand’s prison population.​

As of December 31, 2024, New Zealand’s total prison population reached 10,075 inmates, marking the first time in over four years that the number has exceeded 10,000. This represents a notable increase from previous quarters, indicating a trend of growing incarceration rates.

Māori Overrepresentation Persists

Māori individuals continue to be disproportionately represented in the prison system. Despite comprising approximately 16% of the national population, Māori account for over 50% of incarcerated individuals. ​

Gender Imbalance Remains Pronounced

The prison population is overwhelmingly male, with men constituting about 93.2% of inmates.

At a per-capita view, Males are incarcerated at over 14,000x the rate of Females. (The reason for the big drop in Female per-capita in 2023 is the big jump in Female people in the Census that year).

This gender imbalance has remained consistent over recent years, suggesting a need for targeted interventions addressing the specific factors contributing to male incarceration rates. ​

Conclusion

The demographic data paints a clear picture of the systemic issues influencing New Zealand’s prison population.