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New Hampshire has an incarceration rate of 328 per 100,000 people (including prisons, jails, immigration detention, and juvenile justice facilities), meaning that it locks up a higher percentage of its people than almost any democracy on earth. Read on to learn more about who is incarcerated in New Hampshire and why.


4,200 people from New Hampshire are behind bars

Pie chart showing that 5,300 New Hampshire residents are locked up in federal prisons, state prisons, local jails and other types of facilities

Additionally, the number of people impacted by county and city jails in New Hampshire is much larger than the graph above would suggest, because people cycle through local jails relatively quickly. Each year, at least 25,000 different people are booked into local jails in New Hampshire.


Rates of imprisonment have grown dramatically in the last 40 years

graph showing the number of people in state prison and local jails per 100,000 residents in New Hampshire from 1978 to 2015 Also see these New Hampshire graphs:


Graph showing the number of people in New Hampshire jails who were convicted and the number who were unconvicted, for the years 1978, 1983, 1988, 1993, 1999, 2005, and 2013.


Today, New Hampshire’s incarceration rates stand out internationally

graphic comparing the incarceration rates of the founding NATO members with the incarceration rates of the United States and the state of New Hampshire. The incarceration rate of 664 per 100,000 for the United States and 328 for New Hampshire is much higher than any of the founding NATO members In the U.S., incarceration extends beyond prisons and local jails to include other systems of confinement. The U.S. and state incarceration rates in this graph include people held by these other parts of the justice system, so they may be slightly higher than the commonly reported incarceration rates that only include prisons and jails. Details on the data are available in States of Incarceration: The Global Context. We also have a version of this graph focusing on the incarceration of women.


People of color are overrepresented in prisons and jails

2021 graph showing incarceration rates per 100,000 people of various racial and ethnic groups in New Hampshire

racial and ethnic disparities between the prison/jail and general population in NH as of 2021


New Hampshire's criminal justice system is more than just its prisons and jails

Pie chart showing that 12,000 New Hampshire residents are in various types of correctional facilities or under criminal justice supervision on probation or parole


The high cost of being incarcerated in New Hampshire

Prisons and jails in New Hampshire are increasingly shifting the cost of incarceration to people behind bars and their families, hiding the true economic costs of mass incarceration:


Our other articles about New Hampshire



Other resources

Data on COVID-19 in New Hampshire jails and prisons

We gave New Hampshire a failing grade in September 2021 for its response to the coronavirus in prisons, noting that:

  • New Hampshire is one of 13 states that did not explicitly mention incarcerated people in their vaccination rollout plan.
  • New Hampshire is one of 13 states that did not implement any policies to accelerate releases, promote medical parole or compassionate release, prevent incarceration for technical violations of probation and parole, or hasten releases for people incarcerated on minor offenses.

For more detail, see our report States of Emergency. Or check out these other resources:

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