Where to look

The canonical POP library: problem-specific guides, the Herman Goldstein Award project archive, and the analysis primer Crime Analysis for Problem Solvers in 60 Small Steps.

Use it when: Starting any POP project — check whether your problem already has a guide before analyzing from scratch. This hub indexes its guides and conference projects.

The DOJ office that advances community policing. Publishes free practitioner manuals — including Implementing POP, the manual this directory is modeled on — and funds community-policing work nationwide.

Use it when: You need an implementation manual, training materials, or a federal grant program for community-policing work.

Practitioner-led society translating policing research for working officers and analysts, with research briefs and an annual conference.

Use it when: You want research summaries written for practitioners rather than academics.

The UK counterpart — the original society, drawing on Britain's longer institutional history of embedding research in policing.

Use it when: Following UK developments, where much problem-oriented practice originates.

Academic center that maintains the Evidence-Based Policing Matrix — a visual map of every rigorous policing evaluation, organized by how focused and proactive the tactic is.

Use it when: Checking whether a proposed response has experimental support behind it.

Cambridge-affiliated research group behind targeting/testing/tracking methods and the Crime Harm Index.

Use it when: You want to weight problems by harm instead of raw incident counts — useful for prioritizing what to work on.

DOJ's rated registry of programs and practices, graded Effective, Promising, or No Effects based on evaluation quality.

Use it when: Vetting a specific named program or practice before adopting it.

Systematic-review summaries per intervention type, each rated on effect, mechanism, moderators, implementation, and cost.

Use it when: Comparing candidate responses quickly — the one-page summaries are built for exactly that.

Full systematic reviews of crime-and-justice interventions; the primary research behind many toolkit and clearinghouse ratings.

Use it when: You need the complete review behind a rating, not just the summary.

The national UCR/NIBRS source. This hub's agency trend and incident data derive from its bulk files.

Use it when: Verifying our numbers against the original, or pulling raw bulk extracts yourself.

LEMAS agency surveys, the National Crime Victimization Survey, and censuses of justice agencies.

Use it when: You need victimization data (crime that never gets reported to police) or staffing survey detail.

The archive where raw datasets from criminal-justice research live, including historical UCR and NIBRS series.

Use it when: You need study-level microdata or long historical series for analysis.

County-level performance measures across the whole justice system — prosecution, courts, corrections.

Use it when: Your problem crosses out of policing into the rest of the justice system.

Volunteer-built catalog of local police data sources across the US.

Use it when: Hunting for a local dataset this hub doesn't index yet.

Membership organization of police executives; publisher of much of the POP canon and current management guidance.

Use it when: Leadership and organizational-practice questions — how other executives handled it.

Independent research organization (formerly the Police Foundation); published Sherman's original Evidence-Based Policing paper.

Use it when: Looking for applied research reports or a research partnership.

Training, certification, and standards for crime analysts.

Use it when: Building analysis capacity — the skill the POP literature identifies as the profession's weakest link.

The largest police professional association; maintains model policy documents and national award programs.

Use it when: You need a model policy as a starting point, or peer-recognition programs.

Hiring grants and Community Policing Development funding — the historical funder of POP practice and publications.

Use it when: Funding officers or a community-policing project, including problem-solving initiatives.

DOJ's main funding stream for state and local criminal-justice programs, including Byrne JAG and targeted initiative grants.

Use it when: Funding a response your budget didn't anticipate.

DOJ's research arm; funds research and evaluation partnerships.

Use it when: Partnering with a university to rigorously evaluate a response.