Documents the racial composition of U.S. prisoners across 60 years. Statistics are year-by-year and state-by-state on the race of prisoners admitted to State and federal prisons in the U.S. Tables.

After decades of stability from the 1920s to the early 1970s, the rate of imprisonment in the United States has increased fivefold during the last four decades. The U.S. penal population of 2.2 million adults is by far the largest in the world. Just under one-quarter of the world's prisoners are held in American prisons. The U.S. rate of incarceration, with nearly 1 out of every 100 adults in prison or jail, is 5 to 10 times higher than the rates in Western Europe and other democracies. The U.S. prison population is largely drawn from the most disadvantaged part of the nation's population: mostly men under age 40, disproportionately minority, and poorly educated. Prisoners often carry additional deficits of drug and alcohol addictions, mental and physical illnesses, and lack of work preparation or experience. The growth of incarceration in the United States during four decades has prompted numerous critiques and a growing body of scientific knowledge about what prompted the rise and what its consequences have been for the people imprisoned, their families and communities, and for U.S. society. The Growth of Incarceration in the United States examines research and analysis of the dramatic rise of incarceration rates and its affects. This study makes the case that the United States has gone far past the point where the numbers of people in prison can be justified by social benefits and has reached a level where these high rates of incarceration themselves constitute a source of injustice and social harm. The Growth of Incarceration in the United States examines policy changes that created an increasingly punitive political climate and offers specific policy advice in sentencing policy, prison policy, and social policy. The report also identifies important research questions that must be answered to provide a firmer basis for policy. This report is a call for change in the way society views criminals, punishment, and prison. This landmark study assesses the evidence and its implications for public policy to inform an extensive and thoughtful public debate about and reconsideration of policies.

Between 1975 and 2007, the American incarceration rate increased nearly fivefold, a historic increase that puts the United States in a league of its own among advanced economies. We incarcerate more people today than we ever have, and we stand out as the nation that most frequently uses incarceration to punish those who break the law. What factors explain the dramatic rise in incarceration rates in such a short period of time? In Why Are So Many Americans in Prison? Steven Raphael and Michael A. Stoll analyze the shocking expansion of America’s prison system and illustrate the pressing need to rethink mass incarceration in this country. Raphael and Stoll carefully evaluate changes in crime patterns, enforcement practices and sentencing laws to reach a sobering conclusion: So many Americans are in prison today because we have chosen, through our public policies, to put them there. They dispel the notion that a rise in crime rates fueled the incarceration surge; in fact, crime rates have steadily declined to all-time lows. There is also little evidence for other factors commonly offered to explain the prison boom, such as the deinstitutionalization of the mentally ill since the 1950s, changing demographics, or the crack-cocaine epidemic. By contrast, Raphael and Stoll demonstrate that legislative changes to a relatively small set of sentencing policies explain nearly all prison growth since the 1980s. So-called tough on crime laws, including mandatory minimum penalties and repeat offender statutes, have increased the propensity to punish more offenders with lengthier prison sentences. Raphael and Stoll argue that the high-incarceration regime has inflicted broad social costs, particularly among minority communities, who form a disproportionate share of the incarcerated population. Why Are So Many Americans in Prison? ends with a powerful plea to consider alternative crime control strategies, such as expanded policing, drug court programs, and sentencing law reform, which together can end our addiction to incarceration and still preserve public safety. As states confront the budgetary and social costs of the incarceration boom, Why Are So Many Americans in Prison? provides a revealing and accessible guide to the policies that created the era of mass incarceration and what we can do now to end it.