How We Measure

Map counts = crime incidents in the selected window, dated by when they occurred (not when reported) where the source gives that date.
Crimes only — police activity that is not a crime (calls for service such as alarms, welfare checks and 911 hang-ups, traffic stops, collisions, warrants) and arrest records are left out of every count and the map. Criminal driving offenses (DUI, hit and run, reckless driving) are kept.
Latest 24h = each city’s most recent reporting day within the last week. Police often keep adding reports for recent days, so the latest day’s counts can still rise.
Rates — # = raw counts; 100K = count / population × 100,000, using US Census Bureau 2024 population estimates. Rankings include only cities whose data covers every month of the period.
Year-over-year compares two complete calendar years (data in all 12 months of both).
⚠ = frozen feed (stale).
Partial portals omit categories — missing is not zero.
These are mapped open-data incidents, not the FBI’s official crime statistics; the two are counted differently.