The University of Michigan hosts the National Archive of Criminal Data (NACJ) that maintains data for the Uniform Crime Reports (UCR) collected by the FBI and the National Crime Victimization Survey (NCVS) administered by the BJS, as well as many other criminal justice related statistics including GIS. Click on the button Discover Data to explore what kinds of stats are accessible on the site.
Other good sources for US statistics and policy making programs that work in criminal justice areas are the National Institute of Justice and Crime Solutions.
European Sourcebook of Crime and Criminal Justice Statistics has criminal justice data for the European Union from 1993 up to 2014.
International Crime Victims Survey (ICVS) is an effort to provide results of victimization surveys among the general population about experiences of crime from around the world.
ISRD (International Self-Report Delinquency Study) - is an ongoing international research study of delinquency and victimization among youth (7th-9th grade), using standardized instruments and data collection procedures. The primary focus has been on Europe, but the study now includes a number of non-European countries (e.g., China, Cape Verde, the US and Venezuela).
UNODC - the site map of the United Nations Office on Drugs and Crime serves as the major gateway to information and UN publications and statistics on international efforts to reduce money laundering and organized crime, terrorism and corruption, trafficking in illegal drugs and humans, spread of HIV and AIDS, and piracy.
UNdata are official statistics produced by countries and compiled by United Nations data system, as well as estimates and projections. The domains covered are agriculture, crime, education, energy, industry, labour, national accounts, population and tourism. Click on More on the menu to read about UN Data and get to the Advanced Search for guided search options.
United Nations Surveys on Crime Trends and the Operations of Criminal Justice Systems (CTS) is the authoritative source for the crime statistics on international level going back more than 100 years ago.
World Criminal Justice Library Electronic Network (WCJLN) has a link to criminal justice statistics by individual countries.
Don't forget that you can get a lot of data from the articles and books as well as the Internet:
add such keywords as data or statistics or research or case study to your keywords:
for example: drug trafficking AND (data OR statistics)
Reproduced from the John Jay College ICJ library page created by professors Rosemary Barberet and Maria Kiriakova and Lloyd Sealy Library librarians.