Data Research for Criminal Law

Data Analysis tools (interactive web tools including LEARCAT and NCVS Dashboard), Publications sometimes containing data tables in .csv. Full datasets, surveys and codebooks are available at the National Archive of Criminal Justice Data (NACJD)
BJS "collects, analyzes, publishes, and disseminates information on crime, criminal offenders, victims of crime, and the operation of justice systems at all levels of government."

Law Enforcement Agency Reported Crime Analysis Tool. NIBRS data. 1. Topics Tab - Limit by state, county, offense, victim filters (race, sex, age, etc.) and relationship filters. Provides number of incidents and clearance data. 2. Analytics on Demand tab and 3. Rates on Demand - search for variables you pick. These last two limit by state, but not county.

part of ICPSR (not a govt site), containing full data sets, surveys, and codebooks from the Bureau of Justice Statistics. The "National Archive of Criminal Justice Data (NACJD) archives and disseminates data on crime and justice for secondary analysis. ...NACJD is home to several large-scale and well known datasets, including the National Crime Victimization Survey (NCVS), the FBI's Uniform Crime Reports (UCR), the FBI's National Incident-Based Reporting System (NIBRS), and the Project on Human Development in Chicago Neighborhoods (PHDCN)."
Sometimes data is in a tsv file. Some datasets with county level information.

The Uniform Crime Reporting (UCR) Program is a nationwide, cooperative statistical effort of more than18,000 city, county, and state law enforcement agencies voluntarily reporting data on crimes brought to their attention.
The latest releases are available via the FBI's Crime Data Explorer. Historical publications of "Crime in the United States" are on the UCR publications page.

A history of the UCR program

An interactive data tool, based on NIBRS data. Create visualizations, download data in .csv format, contains large data files. Can limit by agencies such as police departments, sheriffs, colleges, etc., from counties within the state. (For purposes of the class you may be able to use the stats from the largest arresting agency to estimate data for the county, but there are ways to get agency data charts by state, see below. To see which agencies have the largest number of arrests for a certain offense, see NIBR table for Offense Type by Agency.)
1. Explore by location and dataset: (from the main page). Limit by state or agency and offense to see offender and victim characteristics, location of crime, victim's relationship to offender, type of weapon involved, offense linked to another offense.
2. LEOKA - Law enforcement officers killed and assaulted
3. Data discovery tool - Get data for up to 10 agencies at once, and up to 3 crimes at once (limited choices of crimes). Pick location and desired years.
4. Documents & Downloads - datasets - usually in csv files and can open in Excel, NIBRS tables (State tables, offenses by agency available - For (numbers of) Offense Type by Agency use the NIBRS table and select incidents and the state.)

An annual FBI publication. "a compilation of the volume and rate of violent and property crime offenses for the nation and by state using Summary Reporting System data and summarized data from the National Incident-Based Reporting System (NIBRS). Data at the level of local law enforcement agencies are also provided for those contributors supplying 12 months of complete offense data. This report includes arrests, clearances, trends, and law enforcement employee data." Last issue was 2019.

FOIA library.

Data reports, data files, interactive data analyzer. Data from federal courts

Data sets from federal, state and local government. Search for Crime and filter by location. Can also filter by bureaus, such as Office of Justice Programs.