FBI Uniform Crime Reporting Program
FBI Data Quality Guidelines (footnote 8)
Page: https://ucr.fbi.gov/data_quality_guidelines
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8 The FBI archives all of its UCR crime data in the form of master files that are available upon request and free of charge. The data in these master files as well as publicly-released UCR crime data are considered public domain and, therefore, are made available to whoever requests them. Security and confidentiality restrictions do not apply to UCR data; however, in many of the CARD Unit’s research projects, staff may use data other than UCR statistics (e.g., information from the National Crime Information Center). These special studies warrant the need for unique data sets, which the CARD Unit must maintain according to the guidelines of the original source.