Legacy crime files
All five indicators use the legacy LAPD data.
Los Angeles · Methods & sources
Public records, local boundaries, visible limitations. The context behind every Los Angeles chart.
01 · Reading the timeline
LAPD changed to the National Incident-Based Reporting System (NIBRS) on 7 March 2024. NIBRS can count more than one offense in an incident, so values before and after the switch do not have the same basis.
All five indicators use the legacy LAPD data.
Assault, burglary and robbery move to NIBRS from 7 March. Auto theft and grand theft remain on the legacy file through December.
Every indicator uses the NIBRS offense file. Apparent changes across the switch include a change in reporting.
2026 is year-to-date, through 2026-09-19. It is available as a separately labelled partial-year view and is excluded from the ten-full-year comparison.
02 · Scope
These are selected LAPD categories, not all recorded crime. Each city retains its own definitions; the Los Angeles and Toronto figures are not a single comparable series.
Hate-crime and money-laundering sources have not yet been added for Los Angeles. Their views explain that coverage gap. The five indicators above cannot stand in for either subject.
03 · Place & population
The map uses the City of Los Angeles’s 99 certified neighbourhood councils, not LAPD divisions. Reports are assigned using the source’s hundred-block coordinates. The dashboard shows council totals; it does not plot individual incident locations.
2.34% of full-year indicator records could not be placed in a council. Those 25,048 reports remain in the city totals, so council sums are smaller than the citywide total.
Counts are the default. Rate per 10,000 divides the count by resident population and multiplies by 10,000. It provides a population-adjusted lens, not a prediction of individual risk.
Citywide rates use annual U.S. Census Bureau city estimates: 2010-based estimates for 2016–2019 and 2020-based estimates for 2020–2025. That denominator changes base in 2020.
Council rates use a fixed 2020 Census population. Each block group is assigned to the council containing its internal point, so the population is an allocation, not an annual council estimate. Visitors and daytime populations are outside that denominator.
04 · Source records
Police data: Los Angeles Police Department. Boundaries: City of Los Angeles. Population: U.S. Census Bureau. The legacy police datasets are published as CC0; the NIBRS dataset does not specify CC0 and is used under the city portal’s terms.
About this data