Dolphin Isle Neighborhood, San Mateo
Crime Rate & Statistics
Very safe neighborhood — well below-average crime rates
Safety at a Glance
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in San Mateo
Is Dolphin Isle Safe?
Yes — this neighborhood is very safe. Dolphin Isle in San Mateo, CA has a safety grade of A. The overall crime index is 37, which is 63% below the national average of 100.
Compared to the San Mateo average (crime index 66), Dolphin Isle is 29% lower in overall crime.
Looking at specific crime types, murder is the most elevated concern (index: 48, 52% below average), while assault is the lowest risk (index: 14).
Dolphin Isle Crime Breakdown
Crime indices compared to national average (100) and San Mateo city average. Higher values mean more crime.
| Crime Type | Index | vs National | Risk Level | |
|---|---|---|---|---|
| Violent Crime | ||||
|
Murder
|
48 | -52% | Low | |
|
Assault
|
14 | -86% | Low | |
|
Robbery
|
47 | -53% | Low | |
|
Rape
|
32 | -68% | Low | |
| Property Crime | ||||
|
Burglary
|
18 | -82% | Low | |
|
Larceny / Theft
|
33 | -67% | Low | |
|
Vehicle Theft
|
39 | -61% | Low | |
How Dolphin Isle Compares
Crime index by category: Dolphin Isle vs San Mateo average vs national average.
Crime by Category
Overall Crime Comparison
Dolphin Isle Crime Map
Crime heatmap based on block-group level data. Red areas indicate higher crime density.
See the crime score for a specific address
Dolphin Isle Demographics & Context
Education
Housing
Racial Demographics
Nearby Neighborhoods
Frequently Asked Questions
What is the crime rate in Dolphin Isle, San Mateo?
Dolphin Isle in San Mateo, CA has a crime safety grade of A as of 2026. The overall crime index is 37, which is 63% below the national average. Compared to the San Mateo average, crime in Dolphin Isle is 29% lower.
Is Dolphin Isle a safe neighborhood in San Mateo?
Dolphin Isle is generally considered a safe neighborhood in San Mateo, earning a crime grade of A. The highest concern is Murder (index: 48), while Assault is the lowest risk (index: 14).
How does Dolphin Isle compare to the rest of San Mateo?
Dolphin Isle's overall crime index is 37, compared to the San Mateo average of 66. This means crime in Dolphin Isle is 29% lower than the city average. For violent crime, the index is 35, and for property crime it is 30. However, crime can vary block by block, so checking the crime map for specific streets is recommended.
What type of crime is most common in Dolphin Isle?
The most prevalent crime type in Dolphin Isle is Murder, with a crime index of 48 (52% below the national average). Violent crime is a particular concern in this neighborhood relative to property crime.
What are safer neighborhoods near Dolphin Isle?
Nearby neighborhoods with good safety ratings include Carmel Village, Treasure Isle, Bay Vista and Marina Point. These areas are close to Dolphin Isle and offer lower crime rates, making them worth considering for residents who prioritize safety.
What are the demographics of Dolphin Isle?
Dolphin Isle has a population of approximately 148. The median household income is $179,171. The median home value is $2,321,000. Research shows that economic factors can correlate with crime rates, though many other variables play a role in neighborhood safety.
How does Dolphin Isle crime compare to the national average?
Dolphin Isle's overall crime rate is 63% below the national average (index 37 vs 100). For the most accurate picture, review the per-crime-type breakdown above, as some categories may differ significantly from the overall trend.
Crime data sourced from FBI UCR reports and local law enforcement agencies. Crime indices use 100 as the national average. Updated April 2026.