Crime in Portsmouth, New Hampshire
Major crime in Portsmouth is 29% below the U.S. rate per resident: 36% lower for persons crimes and 27% lower for property crimes. Expected major crimes are down 7.5% from a year earlier.
Modeled estimates per resident, not counts of incidents. How we calculated this
Index: crimes per resident compared with the U.S., where 100 is the U.S. rate and 200 is twice it.
Check an address in Portsmouth
Intimidation stands out most, at 48% above the U.S. rate
Expected crimes per year in Portsmouth for each type, and the index against the U.S. rate per resident.
Citywide indexWhere the middle half of residents live
Property crimes
Social disorder
How crime varies across Portsmouth
The middle half of Portsmouth residents live in neighborhoods with a major-crime index between 39 and 62; the typical (median) resident's is 48. The citywide figure (71) is higher than that because crime concentrates in a smaller set of areas.
- 0–5051.2%
- 50–10030.1%
- 100–20015.2%
- 200–4003.6%
- 400+0.0%
Share of residents by the index of their census block group, a neighborhood of roughly 600 to 3,000 people.
Highest on weekday daytimes
Major-crime index by time of week, against the U.S. rate for the same hours.
Major crime fell 7.5% in a year; across New Hampshire it fell 7.8%
Change in expected crimes, with New Hampshire as a whole in gray. The past year uses the reporting agencies' year-to-date FBI data; 2031 is the model's projection.
Portsmouth against U.S. places with 10,000 to 25,000 residents
1,082 of the 2,149 other places of this size have a higher major-crime index than Portsmouth; the middle of the group is 72. The 9 nearest in population:
Major-crime index per resident, U.S. = 100; residents in gray.
Portsmouth has a higher major-crime index than 6 of its 8 nearest neighbors
The 8 nearest cities and towns we cover, by major-crime index. The closest, Kittery (3 mi), is 36% below Portsmouth's rate.
Major-crime index per resident, U.S. = 100; distances between where residents live, in miles.
Questions about crime in Portsmouth
What are the most common crimes in Portsmouth?
By expected count, the most common persons and property crimes are other larceny (about 145 a year), aggravated assault (about 34 a year) and shoplifting (about 32 a year). Compared with the U.S., intimidation stands out most: 48% above the U.S. rate per resident.
How we calculated this
Each police agency's crimes, as reported to the FBI, are spread across the census block groups it serves using population, jobs, points of interest and, where available, local incident records. Portsmouth's figures add up its 21 block groups. The index compares crimes per resident with the U.S. rate.
- Portsmouth has no published incident records in our data, so its estimate relies on agency totals and neighborhood characteristics.
- 0.0% of residents live in block groups whose estimate has high confidence (80% interval within about 5x).
- Rates are per resident, so places where many people work or visit but few live, such as downtowns, airports and stadiums, can read high.
- Disorderly conduct and trespassing are modeled, because the FBI records them only through arrests.
- Residents: 23,135. Model updated Oct 20, 2026. Release 2026-2026-10-20-2
Full method and validation·Data sources
CrimeMetric. "Crime in Portsmouth, New Hampshire." Vorp Labs, model updated Oct 20, 2026. https://crimemetric.com/nh/portsmouth
Use these numbers in your product
Any U.S. address by API or MCP, free for 10,000 lookups a month.
Get a free API keyNearest cities we publish
Major-crime index, U.S. = 100
- Kittery, ME3 mi46
- Newmarket9 mi27
- Hampton9 mi39
- Dover10 mi39
- Hampton Beach11 mi77
- Exeter11 mi30
- South Berwick, ME12 mi28
- Somersworth14 mi109