Sources
Every number on this site traces back to an official public source. Here is where the data comes from, how it is processed, and how to download it.
All FBI data is a U.S. government work in the public domain.
Federal Bureau of Investigation, Uniform Crime Reporting Program
ORIs, agency names and types, counties, coordinates and NIBRS status.
/agency/byStateAbbr/{state}Federal Bureau of Investigation, Uniform Crime Reporting Program
Offenses, clearances, population coverage and rates by month and year.
/nibrs/{national|state/{state}}/720?type=countsFederal Bureau of Investigation, Uniform Crime Reporting Program
Animal cruelty and total offenses reported by each agency, per year.
2020-agencies.zip 874cd7984276fb80…2021-agencies.zip e79732020cda3fd2…2022-agencies.zip bfa98d5a54c8470d…2023-agencies.zip d71dbed48f27dcd7…2024-agencies.zip 8c2be7442b18291f…2025-agencies.zip 17694c64d7d36492…Federal Bureau of Investigation, Uniform Crime Reporting Program
Demographics of known animal cruelty offenders compared with all offenses.
2020-offenders.zip 87535c2077783cba…2021-offenders.zip 1dc3ca5bc9c4e82e…2022-offenders.zip 1448f7bb0aba1c51…2023-offenders.zip 554de285ab70de35…2024-offenders.zip c19f115ad318e60b…2025-offenders.zip 66128307a8c28207…IROPO contributors
Links to registries run by state and local governments.
Law Enforcement Assistance Administration / NCJRS (document 75873)
Historical ORIs for NC, ND and NY (legacy spreadsheets), cross-checked against the current FBI directory.
Free to use for any purpose under CC0. Please cite the FBI as the original source.
| File | Contents | Rows | Size |
|---|---|---|---|
| agencies.csv | Every law enforcement agency in the FBI directory: ORI, name, type, state, counties, coordinates and NIBRS status. | 19,636 | 1.7 MB |
| animal-cruelty-by-agency.csv | Animal cruelty and total offenses reported by each agency per year, from the FBI's Offense Type by Agency tables, with linked ORIs. | 64,306 | 3.6 MB |
| animal-cruelty-by-state.csv | Yearly animal cruelty offenses, clearances, rates and NIBRS coverage for the United States and every state. | 520 | 25 KB |
| animal-cruelty-offenders.csv | Offender age, sex, race and adult/juvenile counts for animal cruelty and for all offenses, per year. | 180 | 5 KB |
| legacy-ori-crosswalk.csv | ORIs from the 1977 NLETS directory spreadsheets (NC, ND, NY) checked against today's FBI directory. | 1,930 | 229 KB |
The same data powers this site and is available as static JSON:
/data/national.json national series, top agencies and offender demographics/data/states.json yearly and monthly series for every state/data/agencies/{STATE}.json every agency in a state, for example NC.json/data/official-registries.json official registry catalog/data/sources.json provenance, retrieval times and checksumsJSON Schemas for these files live in data/schema.
The FBI's agency tables name agencies but do not include their ORI codes. IROPO links each row to the FBI agency directory within the same state, first by exact name, then after removing generic words such as "Police Department", then by word order. Each ORI can be claimed only once per state and year, and ambiguous matches are left unlinked. 99.0% of 64,306 agency-year rows are linked.
Rates divide offenses by the average population served by agencies that reported to NIBRS that year, per 100,000 residents. Coverage is the share of all residents served by those agencies. States with under 50% coverage, or with almost no reported cruelty despite broad coverage, are excluded from state rankings.
IROPO's first agency spreadsheets for North Carolina, North Dakota and New York were
transcribed by OCR from a 1977 directory. The pipeline checks each legacy ORI against today's
FBI directory, flags look-alike character errors (such as I for 1),
and publishes the results as a crosswalk.
An ORI, or Originating Agency Identifier, is the nine-character code the FBI's National Crime
Information Center assigns to each criminal justice agency. The first two letters are the
state. For example, the New York City Police Department is NY0303000. Every
NIBRS incident report carries the ORI of the agency that submitted it, which makes ORIs the
natural key for joining agency data.
Background documents kept in the project repository.
Law Enforcement Assistance Administration grant 75-SS-99-6018, NCJRS document 75873. A cross-referenced list of criminal justice agencies and their ORIs; the source of IROPO's legacy spreadsheets.
FBI Criminal Justice Information Services. Defines ORIs, record types and validation rules for the National Crime Information Center.
An example of how one state's CJIS network documents agency access, validation and hit confirmation.
National Immigration Law Center. Background on the Nlets network that links state and federal criminal justice systems, and its privacy implications.
The FBI's 2020 North Carolina Offense Type by Agency table and national offender tables, used in IROPO's first analysis. Superseded by the automated downloads above.