San Marco Neighborhood, Walnut Creek
Crime Rate & Statistics
Above-average safety — lower crime than most neighborhoods
Safer than 15% of neighborhoods in Walnut Creek
Safety at a Glance
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in Walnut Creek
Is San Marco Safe?
Yes — this neighborhood is safer than most. San Marco in Walnut Creek, CA has a safety grade of B+. The overall crime index is 109, which is 9% above the national average of 100. San Marco is safer than 15% of neighborhoods in Walnut Creek.
Compared to the Walnut Creek average (crime index 59), San Marco is 50% higher in overall crime. Residents and visitors should exercise extra caution in this area, particularly after dark.
Looking at specific crime types, assault is the most elevated concern (index: 186, 86% above average), while robbery is the lowest risk (index: 70).
San Marco Crime Breakdown
Crime indices compared to national average (100) and Walnut Creek city average. Higher values mean more crime.
| Crime Type | Index | vs National | Risk Level | |
|---|---|---|---|---|
| Violent Crime | ||||
|
Murder
|
89 | -11% | Average | |
|
Assault
|
186 | +86% | High | |
|
Robbery
|
70 | -30% | Low | |
|
Rape
|
90 | -10% | Average | |
| Property Crime | ||||
|
Burglary
|
76 | -24% | Low | |
|
Larceny / Theft
|
127 | +27% | Moderate | |
|
Vehicle Theft
|
116 | +16% | Moderate | |
How San Marco Compares
Crime index by category: San Marco vs Walnut Creek average vs national average.
Crime by Category
Overall Crime Comparison
San Marco Crime Map
Crime heatmap based on block-group level data. Red areas indicate higher crime density.
See the crime score for a specific address
San Marco Demographics & Context
Education
Housing
Racial Demographics
Nearby Neighborhoods
Frequently Asked Questions
What is the crime rate in San Marco, Walnut Creek?
San Marco in Walnut Creek, CA has a crime safety grade of B+ as of 2026. The overall crime index is 109, which is 9% above the national average. Compared to the Walnut Creek average, crime in San Marco is 50% higher. San Marco is safer than 15% of neighborhoods in Walnut Creek.
Is San Marco a safe neighborhood in Walnut Creek?
San Marco is generally considered a safe neighborhood in Walnut Creek, earning a crime grade of B+. The highest concern is Assault (index: 186), while Robbery is the lowest risk (index: 70).
How does San Marco compare to the rest of Walnut Creek?
San Marco's overall crime index is 109, compared to the Walnut Creek average of 59. This means crime in San Marco is 50% higher than the city average. For violent crime, the index is 109, and for property crime it is 106. 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 San Marco?
The most prevalent crime type in San Marco is Assault, with a crime index of 186 (86% above the national average). Violent crime is a particular concern in this neighborhood relative to property crime.
What are safer neighborhoods near San Marco?
Nearby neighborhoods with good safety ratings include Lakewood, Diablo Hills, Lower Lakewood and Rancho San Miguel. These areas are close to San Marco and offer lower crime rates, making them worth considering for residents who prioritize safety.
What are the demographics of San Marco?
San Marco has a population of approximately 364. The median household income is $150,718. The median home value is $896,726. Research shows that economic factors can correlate with crime rates, though many other variables play a role in neighborhood safety.
How does San Marco crime compare to the national average?
San Marco's overall crime rate is 9% above the national average (index 109 vs 100). Within Walnut Creek, it is safer than 15% of neighborhoods. 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.