Systematic reviews. The Advanced Search mode has a filter for Crime and Justice. https://www.campbellcollaboration.org/better-evidence.html

https://www.stlouis-mo.gov/government/departments/public-safety/corrections/index.cfm

https://www.stlouis-mo.gov/services/topic.cfm?id=28&name=law-safety-and-justice

https://slmpd.org/

https://www.stlouis-mo.gov/government/departments/municipal-courts/index.cfm

Crime maps by a variety of selections. https://www.slmpd.org/crime_mapping.shtml

Office of Justice. Rigorous research on what works in criminal justice, juvenile justice, and crime victim services. https://crimesolutions.ojp.gov/

U.S. Dept. of Justice, Bureau of Justice. Statistics on crime, criminals, victims, etc. for the period 1985+. https://bjs.ojp.gov/data/topic

See the Criminal Justice box on the subpage, "Freely Searchable Databases by Subject for Alumni." https://libguides.wustl.edu/c.php?g=46890&p=301116#s-lg-box-888613

Statistical information, publications, state-by-state comparisons, etc. https://deathpenaltyinfo.org/

https://www.fbi.gov/

https://www.bop.gov/

https://www.mo.gov/government/judicial-branch/

https://doc.mo.gov/

Crime prevention, crime victims, homeland security, law enforcement, sex offenders, etc. https://dps.mo.gov/

https://statepatrol.dps.mo.gov/

Datasets related to criminal justice. Many federal datasets are free to use. Requires free registration to access datasets. https://www.icpsr.umich.edu/web/pages/NACJD/index.html

Covers corrections, courts, drugs and crime, law enforcement, juvenile justice, crime statistics, domestic preparedness, and victims of crime. https://www.ojp.gov/ncjrs/virtual-library/search

https://nationalreentryresourcecenter.org/

Homepage for the U.S. government office. Has statistics, publications, etc. related to juvenile crime/delinquency.
https://ojjdp.ojp.gov/

The Model Programs Guide MPG database of evidence-based programs covers the entire continuum of youth services from prevention through sanctions to reentry. https://ojjdp.ojp.gov/model-programs-guide/home

Crime maps by type of crime. https://stlouiscountypolice.com/st-louis-county-municipal-crime-map/

https://stlouiscountymo.gov/st-louis-county-departments/justice-services/

For statistics, see the Criminal Justice box on the statistics subpage. https://libguides.wustl.edu/c.php?g=46890&p=301062#s-lg-box-890017

https://www.uscourts.gov/

https://www.justice.gov/

https://www.ussc.gov/

https://whatworks.csgjusticecenter.org/