Walnut Valley, Diamond Bar, CA Property Crime Rates and Maps
Walnut Valley is a neighborhood of 38,100 residents in Diamond Bar, close to downtown · Updated November 2026
How common is property crime in Walnut Valley?
Walnut Valley earns a B+ for property crime, with more property crime than the neighborhoods where 66% of Americans live. Theft makes up 47% of it. Burglary, the crime most likely to reach into a home, grades F, and vehicle theft grades A. Diamond Bar as a whole grades B+ for property crime.
B+
Property crime CrimeGrade™
Safety score 698 of 1,000More property crime than most US neighborhoodsi What this means
34% of Americans live in neighborhoods with more property crime than Walnut Valley as a whole, and 66% in neighborhoods with less. The typical US neighborhood has a property crime safety score of 823, a CrimeGrade™ of A-. Walnut Valley scores 698.
Crime is concentrated in a small share of places, so most neighborhoods score high on the 0 to 1,000 scale. That is why a score in the 800s can still mean more property crime than most US neighborhoods.
How to read the map: each area's color compares its property crime with the homes, parked cars and people there, on one national scale, from green for the least to red for the most. Each area gets its own color, so a busy shopping center can show red while the homes beside it stay green. The interactive maps load faster on a strong connection. Compare high speed internet in Walnut Valley, Diamond Bar, CA at ISP Reports.
Who this page is for: homeowners and renters in Walnut Valley in Diamond Bar, and anyone thinking about buying or renting a home there.
Business and enterprise customers: this free map shows neighborhood areas. CrimeGrade™ business reports map crime at about 66-meter detail and estimate it for one address and type of business. See business reports
What stands out about property crime in Walnut Valley
Burglary stands out among neighborhoods graded B for property crime. For the typical resident of a US neighborhood graded B for property crime, the figure is 2.5 burglaries a year per 1,000 residents; Walnut Valley has 8.6.
Where property crime is lowest and highest in Walnut Valley
Most of Walnut Valley grades well for property crime: 93% of residents live in areas graded A or B, and the rest in areas graded C. Property crime grades across Walnut Valley run from A to C+.
93%
A or B 93%C 7%
Share of residents, by the property crime CrimeGrade™ of the area they live in.
Is property crime going up in Diamond Bar?
Reported property crime in Diamond Bar as a whole has risen 11% since 2019. Burglaries, thefts and vehicle thefts went from about 16 to 18 a year per 1,000 residents (US: 18). Property crime changed little from 2023 to 2024.
Property crime, change since 2019
Diamond BarUnited States
Source: crime reports to the FBI from the police departments that serve Diamond Bar. The charts follow crimes per resident.
Data table
Year
Property, Diamond Bar
Property, US
2016
+1%
+15%
2017
+13%
+12%
2018
+2%
+4%
2019
+0%
+0%
2020
-12%
-8%
2021
-8%
-10%
2022
+12%
-6%
2023
+17%
-7%
2024
+11%
-15%
Property crime rates and types in Walnut Valley
CrimeGrade™ estimates Walnut Valley has about 26 reported property crimes a year for every 1,000 residents, 10% more than the US as a whole and 26% more than Diamond Bar as a whole.
All property crime
Burglary
Vehicle theft
Reported crimes a year, per 1,000 residents. Property crime here includes vandalism, which the FBI's property crime rate leaves out.
Theft is the most common property crime in Walnut Valley, about 47% of the total, followed by burglary and vandalism.
Each CrimeGrade™ here compares a property crime with what it affects: homes for burglary and arson, parked cars for vehicle theft, people and parking for theft, homes and businesses for vandalism. Rates count crimes per 1,000 residents.
Select a crime's name to see its map above. CrimeGrade™ business reports map each crime at about 66-meter detail.
Property crime in Walnut Valley and nearby neighborhoods
Walnut Valley has less property crime than 9 of its 10 nearest neighborhoods; only Brea-Olinda has less.
Nearest first, with each place's distance from Walnut Valley. Beside each property crime CrimeGrade™ is its safety score, from 0 to 1,000 (higher is safer).
Compared with neighborhoods of similar size and density, Walnut Valley is safer than 64% of them.
Night lighting, parking lots and walkability in Walnut Valley
Among the traits that tend to go with property crime, one sets Walnut Valley apart: it has 80 jobs for every 100 residents, against 45 for the US as a whole. Places like that tend to report more theft, yet theft runs lower here than that would suggest.
Lit at nightSatellite images show which neighborhoods are lit at night, a sign of busy streets and businesses. Brightly lit places tend to report more theft and vandalism.100% where people liveUS: 78%Lower than for 88% of residents of US city neighborhoods
Parking lotsBig lots at stores, offices and apartment complexes. Places with more lot space tend to report more theft.2.0 spaces per residentUS: 2.0Higher than for 86% of residents of US city neighborhoods
Walk GradeBestNeighborhood's grade for getting through daily life on foot, traced along real walking routes to shops, schools and parks. Walkable places tend to report more theft. 87% of residents here live in car-dependent areas.D (15 of 100)US: 21Lower than for 82% of residents of US city neighborhoods
Show all 4
JobsJobs draw daytime crowds. Places with many jobs tend to report more theft.80 for every 100 residentsUS: 45Higher than for 83% of residents of US city neighborhoods
These traits tend to go with more or less crime; none of them causes it on its own. Sources: Census job counts and housing figures, OpenStreetMap and Overture business listings, CrimeGrade™ parking estimates, NASA night-light imagery, US Forest Service tree cover, EPA transit data and BestNeighborhood's Walk Grade.
What property crime costs Walnut Valley
Property crime costs Walnut Valley about $7.4 million a year, or $193 per resident and about $598 per household: the value of what is stolen or damaged, plus the police, courts and prisons that respond.
Cost of property crime per resident, per year
How CrimeGrade™ works
The property crime CrimeGrade™ covers burglary, theft, car theft, arson and vandalism, from A+ for the least crime to F for the most, on one scale for the whole country.
It weighs each property crime against what it affects: homes for burglary and arson, parked cars for car theft, and the people and parking around stores for theft.
The rates on this page count crimes for every 1,000 people who live here, the way police departments report them.
Comparisons with US neighborhoods use the Census Bureau's block groups, small areas of about 1,400 residents, and count the people who live in each. The figures count crimes reported to police; many crimes, shoplifting above all, never are. Behind the grades, CrimeGrade™ tested 21,607 factors from 125 data families. For business owners, paid CrimeGrade™ location reports estimate crime at a single address for each type of business.
Where the numbers come from
Crime reports that police departments file with the FBI
State crime records and city crime data, where they are published
Published research on what crime costs victims and communities
These are estimates of reported crime for whole areas, not a record of what happened on any one street. CrimeGrade™ updates them once a year and provides them free and without guarantee. Check local sources before you rely on them for a decision.
