Thomas Mountain is a community of 243 in Riverside County, about 50 miles southeast of downtown Riverside · Updated November 2026
Is Thomas Mountain, CA safe?
Yes. Most US neighborhoods have little crime, and Thomas Mountain has less than most of them: its overall CrimeGrade™ is A+, safer than the neighborhoods where 91% of Americans live. Violent and property crime both grade A+ here.
A+
Overall CrimeGrade™
Safety score 963 of 1,000Safer than nearly all US neighborhoodsi What this means
91% of Americans live in neighborhoods with more crime than Thomas Mountain as a whole, and 9% in neighborhoods with less. The typical US neighborhood has a safety score of 838, a CrimeGrade™ of A-. Thomas Mountain scores 963.
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 crime than most US neighborhoods.
How to read the map: each area's color compares its crime with the people, homes and cars there, on one national scale, from green for the least crime 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 Thomas Mountain, CA at ISP Reports.
Who this page is for: homeowners and renters in Thomas Mountain, 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
Crime rates and types in Thomas Mountain
CrimeGrade™ estimates Thomas Mountain has about 24 reported crimes a year for every 1,000 residents, 36% less than the US as a whole and 40% less than California.
Overall crime
Violent crime
Property crime
Reported crimes a year, per 1,000 residents. These figures include simple assaults and vandalism, which the FBI's violent and property crime rates leave out.
Vandalism is the most common crime in Thomas Mountain, about 31% of everything reported.
Each CrimeGrade™ compares a crime with what it affects: people for assaults and robbery, homes for burglary, parked cars for vehicle theft. 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.
How Thomas Mountain compares with nearby cities
Thomas Mountain has less crime than 5 of its 10 nearest cities.
Nearest first, with each place's distance from Thomas Mountain. Beside each overall CrimeGrade™ is its safety score, from 0 to 1,000 (higher is safer).
Compared with cities of similar size and density, Thomas Mountain has more crime than 76% of them.
Counting police, courts and prisons as well as victims' losses, crime costs Thomas Mountain about $833 a year per household, 31% less than the US figure of $1,205.
Cost of crime per resident, per year
Counting the pain and suffering of victims, which comes almost entirely from violent crime, the full cost comes to about $330,000 a year, or $1,363 per resident.
How the cost breaks down
Crime
Cost a year
Per resident
Murder
$36,000
$150
Rape
$1,500
$6
Robbery
$1,100
$5
Assault
$9,000
$37
Burglary
$11,000
$44
Theft
$7,100
$29
Vehicle theft
$5,600
$23
Arson
$1,800
$7
Vandalism
$13,000
$53
Total
$86,000
$354
How CrimeGrade™ works
A CrimeGrade™ shows how much crime an area has compared with the rest of the country, from A+ for the least crime to F for the most. Every neighborhood in the US is graded on the same scale, so a B in Thomas Mountain means the same as a B anywhere else.
CrimeGrade™ starts from the crimes people report to police and measures each kind of crime against what it affects: people for assaults, homes for burglaries, parked cars for car thefts.
The rates on this page count crimes for every 1,000 people who live here, the way police departments report them. Thomas Mountain is a good example: many people work in, shop in or visit it, so its crime per resident looks worse than its CrimeGrade™ suggests.
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.
Schools in Thomas Mountain, CA average a SchoolGrade of D-: 23% of students test proficient, against 27% projected for schools like them. Overall, they don't meet expectations. See schools in Thomas Mountain on SchoolGrade
