Cass Street Neighborhood, Portsmouth
Crime Rate & Statistics
Very safe neighborhood — well below-average crime rates
Safer than 56% of neighborhoods in Portsmouth
Safety at a Glance
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in Portsmouth
Is Cass Street Safe?
Yes — this neighborhood is very safe. Cass Street in Portsmouth, NH has a safety grade of A. The overall crime index is 126, which is 26% above the national average of 100. Cass Street is safer than 56% of neighborhoods in Portsmouth.
Compared to the Portsmouth average (crime index 137), Cass Street is 11% lower in overall crime.
Looking at specific crime types, assault is the most elevated concern (index: 157, 57% above average), while rape is the lowest risk (index: 89).
Cass Street Crime Breakdown
Crime indices compared to national average (100) and Portsmouth city average. Higher values mean more crime.
| Crime Type | Index | vs National | Risk Level | |
|---|---|---|---|---|
| Violent Crime | ||||
|
Murder
|
152 | +52% | High | |
|
Assault
|
157 | +57% | High | |
|
Robbery
|
99 | -1% | Average | |
|
Rape
|
89 | -11% | Average | |
| Property Crime | ||||
|
Burglary
|
99 | -1% | Average | |
|
Larceny / Theft
|
131 | +31% | Moderate | |
|
Vehicle Theft
|
132 | +32% | Moderate | |
How Cass Street Compares
Crime index by category: Cass Street vs Portsmouth average vs national average.
Crime by Category
Overall Crime Comparison
Cass Street Crime Map
Crime heatmap based on block-group level data. Red areas indicate higher crime density.
See the crime score for a specific address
Cass Street Demographics & Context
Education
Housing
Racial Demographics
Nearby Neighborhoods
Frequently Asked Questions
What is the crime rate in Cass Street, Portsmouth?
Cass Street in Portsmouth, NH has a crime safety grade of A as of 2026. The overall crime index is 126, which is 26% above the national average. Compared to the Portsmouth average, crime in Cass Street is 11% lower. Cass Street is safer than 56% of neighborhoods in Portsmouth.
Is Cass Street a safe neighborhood in Portsmouth?
Cass Street is generally considered a safe neighborhood in Portsmouth, earning a crime grade of A. The highest concern is Assault (index: 157), while Rape is the lowest risk (index: 89).
How does Cass Street compare to the rest of Portsmouth?
Cass Street's overall crime index is 126, compared to the Portsmouth average of 137. This means crime in Cass Street is 11% lower than the city average. For violent crime, the index is 124, and for property crime it is 121. 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 Cass Street?
The most prevalent crime type in Cass Street is Assault, with a crime index of 157 (57% above the national average). Violent crime is a particular concern in this neighborhood relative to property crime.
What are safer neighborhoods near Cass Street?
Nearby neighborhoods with good safety ratings include Goodwin Park, Wibird Area, Islington Creek and Lincoln / Broad Street Area. These areas are close to Cass Street and offer lower crime rates, making them worth considering for residents who prioritize safety.
What are the demographics of Cass Street?
Cass Street has a population of approximately 180. The median household income is $101,856. The median home value is $682,517. Research shows that economic factors can correlate with crime rates, though many other variables play a role in neighborhood safety.
How does Cass Street crime compare to the national average?
Cass Street's overall crime rate is 26% above the national average (index 126 vs 100). Within Portsmouth, it is safer than 56% 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.