Byrnes Neighborhood, San Mateo
Last updated: June 5, 2026
Crime Rate & Statistics
Good safety — crime rates are below the national average
Summary: Byrnes, San Mateo Crime Rate (2026)
Byrnes in San Mateo, CA has a crime safety grade of B as of 2026. The overall crime index is 120, which is 20% above the national average.
Data source: FBI UCR & local law enforcement data. Last updated: June 5, 2026.
Safety at a Glance
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in San Mateo
Is Byrnes Safe?
Yes — this neighborhood has good safety. Byrnes in San Mateo, CA has a safety grade of B. The overall crime index is 120, which is 20% above the national average of 100.
Compared to the San Mateo average (crime index 66), Byrnes is 54% higher in overall crime. Residents and visitors should exercise extra caution in this area, particularly after dark.
Looking at specific crime types, murder is the most elevated concern (index: 147, 47% above average), while assault is the lowest risk (index: 46). Violent crime is a particular area of concern relative to property crime in this neighborhood.
Byrnes 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
|
147 | +47% | Moderate | |
|
Assault
|
46 | -54% | Low | |
|
Robbery
|
139 | +39% | Moderate | |
|
Rape
|
134 | +34% | Moderate | |
| Property Crime | ||||
|
Burglary
|
47 | -53% | Low | |
|
Larceny / Theft
|
119 | +19% | Moderate | |
|
Vehicle Theft
|
118 | +18% | Moderate | |
How Byrnes Compares
Crime index by category: Byrnes vs San Mateo average vs national average.
Crime by Category
Overall Crime Comparison
Byrnes Crime Map
Crime heatmap based on block-group level data. Red areas indicate higher crime density.
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Byrnes Demographics & Context
Education
Housing
Racial Demographics
Nearby Neighborhoods
Frequently Asked Questions
What is the crime rate in Byrnes, San Mateo?
Byrnes in San Mateo, CA has a crime safety grade of B as of 2026. The overall crime index is 120, which is 20% above the national average. Compared to the San Mateo average, crime in Byrnes is 54% higher.
Is Byrnes a safe neighborhood in San Mateo?
Byrnes is generally considered a safe neighborhood in San Mateo, earning a crime grade of B. The highest concern is Murder (index: 147), while Assault is the lowest risk (index: 46).
How does Byrnes compare to the rest of San Mateo?
Byrnes's overall crime index is 120, compared to the San Mateo average of 66. This means crime in Byrnes is 54% higher than the city average. For violent crime, the index is 117, and for property crime it is 95. 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 Byrnes?
The most prevalent crime type in Byrnes is Murder, with a crime index of 147 (47% above the national average). Violent crime is a particular concern in this neighborhood relative to property crime.
What are safer neighborhoods near Byrnes?
Nearby neighborhoods with good safety ratings include North Central, Downtown San Mateo, Hayward Park and Sunnybrae / 19th Ave. Park. These areas are close to Byrnes and offer lower crime rates, making them worth considering for residents who prioritize safety.
What are the demographics of Byrnes?
Byrnes has a population of approximately 97. The median household income is $94,866. The median home value is $1,199,438. Research shows that economic factors can correlate with crime rates, though many other variables play a role in neighborhood safety.
How does Byrnes crime compare to the national average?
Byrnes's overall crime rate is 20% above the national average (index 120 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 June 2026.