Riverdale is a community of 219 in Sussex County, about 5 miles northeast of downtown Millsboro · Updated November 2026
Is Riverdale, DE safe?
Yes. An overall CrimeGrade™ of A means crime in Riverdale is low. Most US neighborhoods have little crime too, so Riverdale sits near the middle: 57% of Americans live in neighborhoods with more crime, and 43% in neighborhoods with less. Property crime grades better than violent crime here, A+ against A-.
A
Overall CrimeGrade™
Safety score 869 of 1,000About as safe as the typical US neighborhoodi What this means
57% of Americans live in neighborhoods with more crime than Riverdale as a whole, and 43% in neighborhoods with less. The typical US neighborhood has a safety score of 838, a CrimeGrade™ of A-. Riverdale scores 869.
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 Riverdale, DE at ISP Reports.
Who this page is for: homeowners and renters in Riverdale, 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 Riverdale
CrimeGrade™ estimates Riverdale has about 75 reported crimes a year for every 1,000 residents, about double the rate for the US as a whole and 75% more than Delaware.
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.
The largest share of crime reported in Riverdale is assault, about 52% of the total. It also makes up the largest share of what crime costs here.
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 Riverdale compares with nearby cities
Riverdale has more crime than 7 of its 10 nearest cities. Harbeson and Frankford have the least crime nearby.
Counting police, courts and prisons as well as victims' losses, crime costs Riverdale about $1,314 a year per household, 9% more 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 $590,000 a year, or $2,689 per resident.
How the cost breaks down
Crime
Cost a year
Per resident
Murder
$38,000
$175
Rape
$4,900
$22
Robbery
$3,400
$16
Assault
$86,000
$395
Burglary
$6,800
$31
Theft
$20,000
$90
Vehicle theft
$11,000
$49
Arson
$1,100
$5
Vandalism
$17,000
$75
Total
$190,000
$858
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 Riverdale 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. Riverdale 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 Riverdale, DE average a SchoolGrade of B-: 31% of students test proficient, against 38% projected for schools like them. Overall, they meet expectations. See schools in Riverdale on SchoolGrade
