As of February 2025, El Salvador had the highest prisoner rate worldwide, with over 1,600 prisoners per 100,000 of the national population. Cuba, Rwanda, Turkmenistan, and the United States, rounded out the top five countries with the highest rate of incarceration. Homicides in El Salvador Interestingly, El Salvador, which long had the highest global homicide rates, has dropped out of the top 20 after a high number of gang members have been incarcerated. A high number of the countries with the highest homicide rate are located in Latin America. Prisoners in the United StatesThe United States is home to the largest number of prisoners worldwide. More than 1.8 million people were incarcerated in the U.S. at the beginning of 2025. In China, the estimated prison population totaled 1.69 million people that year. Other nations had far fewer prisoners. The largest share of the U.S. prisoners in federal correctional facilities were of African-American origin. As of 2020, there were 345,500 black, non-Hispanic prisoners, compared to 327,300 white, non-Hispanic inmates. The U.S. states with the largest number of prisoners in 2022 were Texas, California, and Florida. Over 160,000 prisoners in state facilities were sentenced for rape or sexual assault, which was the most common cause of imprisonment. The second most common was murder, followed by aggravated or simple assault.

At the beginning of 2025, the United States had the highest number of incarcerated individuals worldwide, with around 1.8 million people in prison. China followed with around 100,000 fewer prisoners. Brazil followed in third. The incarceration problem in the U.S. The United States has an incredibly high number of incarcerated individuals. Therefore, the incarceration problem has become a widely contested issue, because it impacts disadvantaged people and minorities the most. Additionally, the prison system has become capitalized by outside corporations that fund prisons, but there is still a high cost to taxpayers. Furthermore, there has been an increase in the amount of private prisons that have been created. For-profit prison companies have come under scrutiny because of their lack of satisfactory staff and widespread lobbying. Violent offenses are the most common type of offense among prisoners in the U.S. Incarceration rates worldwide El Salvador had the highest rate of incarceration worldwide, at 1,659 prisoners per 100,000 residents as of February 2025. Cuba followed in second with 794 prisoners per 100,000 inhabitants. The incarceration rate is a better measure to use when comparing countries than the total prison populations, which will naturally have the most populous countries topping the list.

In 2023 Turkey had the highest incarceration rate among European countries, at 408 prisoners per 100,000 inhabitants, followed by Georgia, which had an incarceration of 256. The country with the lowest incarceration rate in this year was Liechtenstein, which had 15 people in prison for every 100,000 inhabitants. Germany had one of the lowest rates of 69 when compared with other major European countries such as France and England & Wales, which had rates of 106 and 136 respectively. The Russian Federation has in previous years been the country with the highest incarceration rate in the Council of Europe's data, however, as the country was removed as a member of the council in 2022 due to their invasion of Ukraine, data for Russia is no longer available.

The Central American nation with the highest prison population rate was El Salvador, with over 1,000 prisoners per 100,000 inhabitants, followed by Panama with 522 prisoners. The lowest prison population rate of the region was found in Guatemala, with 123 prisoners per 100,000 people.

With approximately 1.7 million prisoners, China had by far the biggest prison population across the Asia-Pacific region in 2022. In contrast, less than one thousand people were incarcerated in Brunei and Timor-Leste, respectively.

Prison populations and total populations

The varying size of prison populations throughout Asia-Pacific can be attributed to the size of the general populations across the region's countries and territories. With a population of over 1.4 billion, China is the most populous country in the world. Despite the disparity in population size, Bhutan, which had one of the smallest prison populations in APAC in 2022, had a higher serious assault rate than other Asia-Pacific counties.

Crime rates

Apart from the general population size, there are other factors which can be taken into consideration, such as a diversity in justice systems. Therefore, a comparison of crime throughout the region can be challenging. Although China had a higher prison population, it had a lower intentional homicide rate compared to other Asia-Pacific countries and territories. New Zealand, Singapore, and Hong Kong have the lowest corruption index scores in the region, whereas countries including Bangladesh, Cambodia, and North Korea have recorded the highest scores.

The Latin America and Caribbean nation with the highest prison population rate in 2024 was El Salvador, with 1.086 prisoners per 100,000 inhabitants, the only country to achieve four digits, followed by Cuba with 794 prisoners. Guatemala and Haiti Jamaica had the lowest prison population rates, 123 and 63 per 100,000 inhabitants, respectively.

The average for 2017 based on 19 countries was 250 prisoners per 100,000 people. The highest value was in El Salvador: 601 prisoners per 100,000 people and the lowest value was in Haiti: 81 prisoners per 100,000 people. The indicator is available from 2002 to 2017. Below is a chart for all countries where data are available.

In 2022, about 1,826 Black men per 100,000 residents were imprisoned in the United States. This rate was much lower for Black women, at 64 per 100,000 residents. The overall imprisonment rate in 2022 stood at 355 per 100,000 Americans.

In 2011, a historic Supreme Court decision mandated that the state of California substantially reduce its prison population to alleviate overcrowding, which was deemed so severe as to preclude the provision of adequate healthcare. To comply, California passed the Public Safety Realignment Act (Assembly Bill [AB] 109), representing the largest ever court-ordered reduction of a prison population in U.S. history. AB109 was successful in reducing the state prison population; however, although the policy was precipitated by inadequate healthcare in state prisons, no studies have examined its effects on prisoner health. As other states grapple with overcrowded prisons and look to California’s experience with this landmark policy, understanding how it may have impacted prisoner health is critical. We sought to evaluate the effects of AB109 on prison mortality and assess the extent to which policy-induced changes in the age distribution of prisoners may have contributed to these effects. To do so, we used prison mortality data from the Bureau of Justice Statistics and the California Deaths in Custody reporting program and prison population data from the National Corrections Reporting Program to examine changes in overall prison mortality, the age distribution of prisoners, and age-adjusted prison mortality in California relative to other states before and after the implementation of AB109. Following AB109, California prisons experienced an increase in overall mortality relative to other states that attenuated within three years. Over the same period, California experienced a greater upward shift in the age distribution of its prisoners relative to other states, suggesting that the state’s increase in overall mortality may have been driven by this change in age distribution. Indeed, when accounting for this differential change in age distribution, mortality among California prisoners exhibited a greater reduction relative to other states in the third year after implementation. As other states seek to reduce their prison populations to address overcrowding, assessments of California’s experience with AB109 should consider this potential improvement in age-adjusted mortality.

The South American nation with the highest prison population rate in 2024 was Uruguay, with 449 prisoners per 100,000 inhabitants, followed by Brazil, with 389 prisoners. The country in South America with the lowest prison population rate was Ecuador, with 179 per 100,000 persons.

The United Nations International Crime Prevention and Criminal Justice Branch began the Surveys of Crime Trends and Operations of Criminal Justice Systems (formerly known as the World Crime Surveys) in 1978. The goal of the data collection effort was to conduct a more focused inquiry into the incidence of crime worldwide. To date, there have been five quinquennial surveys, covering the years 1970-1975, 1975-1980, 1980-1986, 1986-1990, and 1990-1994, respectively. Starting with the 1980 data, the waves overlap by one year to allow for reliability and validity checks of the data. For this data collection, the original United Nations data were restructured into a standard contemporary file structure, with each file consisting of all data for one year. Naming conventions were standardized, and each country and each variable was given a unique identifying number. Crime variables include counts of recorded crime for homicide, assault, rape, robbery, theft, burglary, fraud, embezzlement, drug trafficking, drug possession, bribery, and corruption. There are also counts of suspects, persons prosecuted, persons convicted, and prison admissions by crime, gender, and adult or juvenile status. Other variables include the population of the country and largest city, budgets and salaries for police, courts, and prisons, and types of sanctions, including imprisonment, corporal punishment, deprivation of liberty, control of freedom, warning, fine, and community sentence. The countries participating in the survey and the variables available vary by year.

As of December 2022, there was a total of 139,631 prisoners in the state of Texas, the most out of any state. California, Florida, Georgia, and Ohio rounded out the top five states with the most prisoners in the United States.

Hong Kong had the largest share of female prisoners as of October 2023, with nearly 20 percent of its detainees being women. Macau had the second highest rate at over 15 percent. In the United States, 10 percent of inmates were women.

On March 16th 2025, Trump's administration deported 238 alleged members of the Venezuela criminal gang Tren de Aragua to the Terrorism Confinement Center (or CECOT) prison in El Salvador. According to official data, the United States will pay around six million U.S. dollars to El Salvador to imprison around 300 deportees from the U.S. for one year. Crime in El Salvador Nayib Bukele is one of the most beloved world leaders, with an approval rate of 93 percent as of July 2024, being crowned with the highest in Latin America. This comes not without a reason, as El Salvador used to be constantly ranked as one of the most violent countries globally due to gang violence, specifically, La Mara Salvatrucha (MS-13) and Mara Barrio-18. After a particularly violent couple of days in March 2022, Bukele’s administration called for an Emergency state, with massive incarceration of alleged gang members. The Central American country now ranks with the lowest homicide rate in the region. One of the largest prisons in the world, not without controversy El Salvador ranks by far as the country with the highest incarceration rate in the world. As of February 2025, El Salvador's rate was 1,659 prisoners per 100,000 inhabitants, more than double when compared to Cuba – which ranks as the second place. The massive incarceration and the measures taken during the emergency state, various countries and international observers called out El Salvador for an approach lacking human rights. As the gang members were heavily mistreated and later on some of them, or their families, were charged 170 US dollars a month for food, clothing, and other services. Nonetheless, the effectiveness of such measures and with almost 90 percent of Salvadoreans feeling safer after the emergency state, Bukele secured a second office term in 2024 with more than 80 percent of the votes.

As of September 2023, the Republic of Congo had the highest prison occupancy, with an occupancy level of roughly 616.9 percent. Haiti had the second highest prison occupancy, at 454.4 percent.

Mexico had nearly 233,300 prisoners as of December 2023, around 7,200 prisoners more than the prior year. The volume of imprisoned people in the country followed an increasing trend from 2018 to 2023. Prison population That figure places Mexico among the countries with the largest number of prisoners in the world. However, when taking into account incarceration rates, that is, the number of prisoners per 100,000 inhabitants, Mexico falls out of the ranking and is, actually, one of the Latin American and Caribbean countries with the lowest rates, exceeded by far by countries like El Salvador and Cuba, which register four times the prison population rate of Mexico.People aged 30 to 39 years made up for the largest share of prisoners in Mexico. However, the share of people deprived of liberty whose age ranged from 18 to 29 years was significantly largest in the case of women, with 32.1 percent of female prisoners pertaining to such age group, while in the case of men it fell to 25.1 percent. Regarding female inmates, approximately a tenth have been pregnant while being in jail. Furthermore, theft was the most commonly committed crime by women in Mexican states' penitentiary centers in 2022, followed by kidnapping and homicide. Preventive prison The main reason for the rapid growth of prison population in Mexico in recent years is the 2019 reform of the article 19 of the Constitution, which has led to the spread of pretrial detention. Pretrial detention is a measure that leads to the imprisonment of people automatically while they are still being investigated, without having been sentenced, and can last up to two years. The reform allowed for automatic preventive imprisonment for a wider range of crimes than before, with the new list including fuel theft (huachicoleo) and burglary, among others. This affects particularly vulnerable people from poor backgrounds, with low education and who commit petty crimes. As of December 2020, 78.6 percent of pre-trial detainees for robbery in Mexico had not been sentenced, which means that less than a fourth of people in jail for robbery had been found guilty in court. The country had an even higher share of unsentenced prisoners for drug trafficking, with 87.8 percent of people being in preventive detention without charge.. One of the reasons behind the high share of prisoners awaiting sentence is the large number of simultaneous cases that public defenders have to attend to. Depending on the Mexican state in which someone is being prosecuted, a public defender can have up to an average of 336.9 simultaneous cases to defend.

This is qualitative data from six focus groups, undertaken 2019–2020, including a total of 32 penal voluntary sector (PVS) practitioners from England and Scotland, holding diverse roles (i.e., strategic leaders, frontline workers, volunteers, lived experience leaders and activists). The study overall was an interpretive study of the PVS which ran from 2019-2021. We explored what people in this sector do and why, what it feels like to practice in this sector, and what power people feel they have in their role. The voluntary sector acts as the last line of defence for some of the most marginalized people in societies around the world, yet its capacities are significantly reduced by chronic resource shortages and dynamic political obstacles. Existing research has scarcely examined what it is like for voluntary sector practitioners working amidst these conditions. We explore how penal voluntary sector practitioners across England and Scotland marshalled their personal and professional resources to “keep going” amidst significant challenges. For data storage and analysis purposes transcripts have been carefully anonymised with any potentially identifiable details removed. Further information about the project and links to publications are available on the University of Nottingham SafeSoc project webpage linked under Related resources.

In May 2019, Dutch courts refused to deport an English suspected drug smuggler, citing the potential for inhuman and degrading treatment at HMP Liverpool. This well publicised judgment illustrates the necessity of my FLF: reconceptualising prison regulation, for safer societies. It seeks to save lives and money, and reduce criminal reoffending.

Over 10.74 million people are imprisoned globally. The growing transnational significance of detention regulation was signalled by the Optional Protocol to the United Nations Convention against Torture/OPCAT. Its 89 signatories, including the UK, must regularly examine treatment and conditions. The quality of prison life affects criminal reoffending rates, so the consequences of unsafe prisons are absorbed by our societies. Prison regulation is more urgent than ever. England and Wales' prisons are now less safe than at any point in recorded history, containing almost 83,000 prisoners: virtually all of whom will be released at some point. In 2016, record prison suicides harmed prisoners, staff and bereaved families, draining ~£385 million from public funds. Record prisoner self-harm was seen in 2017, then again in 2018. Criminal reoffending costs £15 billion annually. Deteriorating prison safety poses a major moral, social, economic and public health threat, attracting growing recognition.

Reconceptualising prison regulation is a difficult multidisciplinary challenge. Regulation includes any activity seeking to steer events in prisons. Effective prison regulation demands academic innovation and sustained collaboration and implementation with practitioners from different sectors (e.g. public, voluntary), regulators, policymakers, and prisoners: from local to (trans)national levels. Citizen participation has become central to realising more democratic, sustainable public services but is not well integrated across theory-policy-practice. I will coproduce prison regulation with partners, including the Prisons and Probation Ombudsman, voluntary organisations Safe Ground and the Prison Reform Trust, and (former) prisoners.

This FLF examines three diverse case study countries: England and Wales, Brazil and Canada, developing multinational implications. This approach is ambitious and risky, but critical for challenging commonsensical beliefs. Interviews, focus groups, observation and creative methodologies will be used. There are three aims, to: i) theorise the (potential) participatory roles of prisoners and the voluntary sector in prison regulation ii) appraise the (normative) relationships between multisectoral regulators (e.g. public, voluntary) from local to (trans)national scales iii) co-produce (with multisectoral regulators), pilot, document and disseminate models of participatory, effective and efficient prison regulation in England and Wales (and beyond) - integrating multisectoral, multiscalar penal overseers and prisoners into regulatory theory and practice.

This is an innovative study. Punishment scholars have paid limited attention to regulation. Participatory networks of (former) prisoners are a relatively new formation but rapidly growing in influence. Nobody has yet considered agencies like the Prisons Inspectorate and Ombudsman alongside voluntary sector organisations and participatory networks, nor their collective influences from local to transnational scales. Nobody has tried to work with all of these agencies to reconceptualise prison regulation and test it in practice.

Findings will be developed, disseminated and implemented internationally. The research team will present findings and engage with...

The Central American nation with the highest prison occupancy rate, as of March 2024, was Guatemala, when the level stood at 293 percent of its official capacity. El Salvador followed with 236 percent of occupancy level. The lowest prison occupancy rate was found in Belize, which, with 57 percent, was the only country whose prison system was not overcrowded. That year, El Salvador had the highest prison population rate in Central America.

As of November 2023, Monaco had the largest share of foreign prisoners with 93 percent of its detainees being foreigners. United Arab Emirates was ranked second, with almost 88 percent of foreign prisoners.