From the docs, provided on the National Incident-Based Reporting System (NIBRS) user manual,
An Originating Agency Identifier (ORI) is a unique nine-character identifier the National Crime Information Center (NCIC) has assigned to each LEA in coordination with the CSO. The Uniform Crime Reporting (UCR) Program uses this identifier to indicate the contributing agency. Data Element 1 is mandatory in each NIBRS submission.
But there is no information on where I can get the list of Originating Agency Identifiers, and I don't see it on the Downloads Page. Where can I find that list? Preferably authoritative from a government site, that I can redistribute?