San Lorenzo is an unincorporated community of 36,600 in San Lorenzo Municipio, about 20 miles southeast of downtown San Juan · Updated November 2026
How common is violent crime in San Lorenzo?
Violent crime is high in San Lorenzo: a B, with more violent crime than the neighborhoods where 78% of Americans live. Assaults make up 73% of it, most of them aggravated assaults, which involve a weapon or a serious injury.
B
Violent crime CrimeGrade™
Safety score 655 of 1,000More violent crime than most US neighborhoodsi What this means
22% of Americans live in neighborhoods with more violent crime than San Lorenzo as a whole, and 78% in neighborhoods with less. The typical US neighborhood has a violent crime safety score of 860, a CrimeGrade™ of A. San Lorenzo scores 655.
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 violent crime than most US neighborhoods.
How to read the map: each area's color compares its violent crime with the people who spend time there, on one national scale, from green for the least to red for the most. Each area gets its own color, so a busy downtown or nightlife strip can show red while the homes around it stay green. The interactive maps load faster on a solid connection. Compare high speed internet in San Lorenzo, PR at ISP Reports.
Who this page is for: homeowners and renters in San Lorenzo, 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 violent crime in San Lorenzo
Aggravated assault is a strength. San Lorenzo grades B for violent crime, but aggravated assault grades A, better than in the neighborhoods where 60% of Americans live.
Simple assaults are uncommon. San Lorenzo has simple assaults at a small fraction of the US rate: 0.58 a year per 1,000 residents, against 9.7 nationally.
Where violent crime is lowest and highest in San Lorenzo
Low violent crime is the norm across San Lorenzo: 82% of residents live in areas graded A or B, and 2% in areas graded D or F. Violent crime grades across San Lorenzo run from A- to D-.
82%16%
A or B 82%C 16%D or F 2%
Share of residents, by the violent crime CrimeGrade™ of the area they live in.
1Barriada Roosevelt-San Lorenzo, northClose to the rest of San Lorenzo on most crimes.B618
2Urbanizacion Los Flamboyanes, northeastClose to the rest of San Lorenzo on most crimes.B-576
3Ciudad Masso, eastClose to the rest of San Lorenzo on most crimes.B-546
Neighborhood areas of San Lorenzo, ranked by violent crime CrimeGrade™; beside each grade is its safety score, from 0 to 1,000 (higher is safer). Each one combines several of the smaller areas on the map.
Violent crime rates and types in San Lorenzo
CrimeGrade™ estimates San Lorenzo has about 2.0 reported violent crimes a year for every 1,000 residents, 85% less than the US as a whole and close to Puerto Rico.
All violent crime
Assaults
Robbery
Reported crimes a year, per 1,000 residents. Violent crime here includes simple assaults, which the FBI's violent crime rate leaves out.
Assault is the most common violent crime in San Lorenzo, about 73% of the total.
Each CrimeGrade™ here compares a violent crime with the people who spend time in an area, not only the people who live there. 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.
Violent crime in San Lorenzo and nearby cities
San Lorenzo has less violent crime than 5 of its 9 nearest cities.
Nearest first, with each place's distance from San Lorenzo. Beside each violent crime CrimeGrade™ is its safety score, from 0 to 1,000 (higher is safer).
Compared with cities of similar size and density, San Lorenzo has more violent crime than 86% of them.
Among the traits that tend to go with violent crime, one sets San Lorenzo apart: it has a Walk Grade of D- (10 of 100) on BestNeighborhood, against 21 for the US as a whole. Places like that tend to report less assault, and it runs low here.
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 assault. 90% of residents here live in car-dependent areas.D- (10 of 100)US: 21Lower than for 77% of US city residents
Residents in dense blocksBlocks of 10,000 or more people per square mile. Dense neighborhoods tend to report more robbery.19% of residentsUS: 24%Higher than for 56% of US city residents
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 violent crime costs San Lorenzo
Counting the pain and suffering of victims, violent crime costs San Lorenzo about $83 million a year, or $2,272 per resident. The costs that reach a bill, such as medical care, lost work and the justice system, come to about $12 million, or $339 per resident.
Billed cost of violent crime per resident, per year
How the cost breaks down
Pain and suffering are about 85% of that full cost.
Crime
Cost a year
Per resident
Murder
$11 million
$294
Rape
$310,000
$8
Robbery
$270,000
$7
Assault
$1.1 million
$29
Total
$12 million
$339
How CrimeGrade™ works
The violent crime CrimeGrade™ covers murder, rape, robbery and assault, from A+ for the least crime to F for the most, on one scale for the whole country.
It weighs each violent crime against the people who spend time in an area, so a busy downtown is graded on its workers and visitors as well as its residents.
The rates on this page count crimes for every 1,000 people who live here, the way police departments report them. San Lorenzo is the other kind of example: few people work in, shop in or visit it, so its crime per resident looks lower 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.
