Data on this report is based on areas within the legal city boundary, outlined in black on the map. Any additional neighborhoods shown on the map are associated with the city by name and are included for reference only.
Raw data sources:
18,000 local law enforcement agencies in the U.S.
Date(s) & Update Frequency:
Reflects 2024 calendar year; released from FBI in October 2025 (latest available). Updated annually.
Where is 2025 data?
Methodology:
Our nationwide meta-analysis overcomes the issues inherent in any crime database, including non-reporting and reporting errors. This is possible by associating the 9.4 million reported crimes in the U.S, including over 2 million geocoded point locations….
Read more about Scout's Crime Data
The crime rate in Diamond Bar is considerably higher than the national average across all communities in America from the largest to the smallest, although at 19 crimes per one thousand residents, it is not among the communities with the very highest crime rate. The chance of becoming a victim of either violent or property crime in Diamond Bar is 1 in 52. Based on FBI crime data, Diamond Bar is not one of the safest communities in America. Relative to California, Diamond Bar has a crime rate that is higher than 67% of the state's cities and towns of all sizes.
How does the crime rate in Diamond Bar compare to similar sized communities across America? When NeighborhoodScout compared Diamond Bar with other communities its size, we found that the crime rate was near the average for all other communities of similar size. So, whether Diamond Bar's crime rate is high or low compared to all places in the US, when we control for population size and compare it to places that are similar in size, it is near the middle of the pack in crime rate; not much more or less dangerous, and about what we would expect from the statistics.
Now let us turn to take a look at how Diamond Bar does for violent crimes specifically, and then how it does for property crimes. This is important because the overall crime rate can be further illuminated by understanding if violent crime or property crimes (or both) are the major contributors to the general rate of crime in Diamond Bar.
For Diamond Bar, NeighborhoodScout found that the violent crime rate is well below the national average for all communities of all population sizes. Violent crimes such as assault, rape, murder and armed robbery happen less often in Diamond Bar than in most of America. One's chance of becoming a victim of a violent crime here is one in 1245, which is a violent crime rate of 1 per one thousand inhabitants.
NeighborhoodScout's analysis also reveals that Diamond Bar's rate for property crime is 18 per one thousand population. This makes Diamond Bar a place where there is an above average chance of becoming a victim of a property crime, when compared to all other communities in America of all population sizes. Property crimes are motor vehicle theft, arson, larceny, and burglary. Your chance of becoming a victim of any of these crimes in Diamond Bar is one in 55.
Diamond Bar Crime
Data
FAQ on NeighborhoodScout's Crime Data
NeighborhoodScout® provides exclusive crime risk analytics for every neighborhood in America with up to 98% predictive accuracy. Crime risk indices are nationally comparable on a 1 – 100 scale, where 100 means safer than 100% of U.S. neighborhoods.
Crime risk data are updated annually. Raw crime incidents are sourced from all 18,000+ local law enforcement agencies – municipal, county, transit, park, port, university, tribal and more, assigned to localities, then built into NeighborhoodScout’s proprietary predictive models to provide a comprehensive crime risk profile for every neighborhood and address-vicinity in the U.S.
