Crime Grade · FBI UCR Data · 2025
Portsmouth, NH Crime Grade
How Portsmouth grades for violent crime against every other reporting U.S. city — and against the rest of New Hampshire — based on the FBI's Uniform Crime Reporting data.
National
6/10
vs. all U.S. cities ≥ 25,000 population
New Hampshire
10/10
vs. New Hampshire cities ≥ 10,000 population
In 2025, the violent crime rate in Portsmouth, NH was 203.0 per 100,000 residents (47 incidents over a population of 23,157). That puts Portsmouth 38% below the U.S. rate of 325.3 and 73% above the New Hampshire statewide rate of 117.2.
Violent crime rate, 5-year trend
Per 100,000 residents. Portsmouth (red), New Hampshire (blue), U.S. average (gray dashed).
Portsmouth vs. U.S., 2025 — by offense
Rates per 100,000 residents for each offense category.
Full data, last 5 years
Rates per 100,000 residents. Raw counts in parentheses.
| Offense | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Violent crime | 255.6(56) | 186.6(42) | 143.1(33) | 187.2(43) | 203.0(47) |
| Murder | 0.0(0) | 0.0(0) | 0.0(0) | 0.0(0) | 0.0(0) |
| Rape | 132.3(29) | 53.3(12) | 56.4(13) | 39.2(9) | 56.1(13) |
| Robbery | 4.6(1) | 8.9(2) | 13.0(3) | 8.7(2) | 4.3(1) |
| Aggravated assault | 118.7(26) | 124.4(28) | 73.7(17) | 139.3(32) | 142.5(33) |
| Property crime | 1483.1(325) | 1265.9(285) | 1049.6(242) | 1301.8(299) | 1140.0(264) |
| Burglary | 50.2(11) | 53.3(12) | 60.7(14) | 30.5(7) | 181.4(42) |
| Larceny | 1350.8(296) | 1123.8(253) | 919.5(212) | 1158.1(266) | 898.2(208) |
| Motor vehicle theft | 77.6(17) | 80.0(18) | 65.1(15) | 100.1(23) | 51.8(12) |
How the Crime Grade is calculated
- Source: FBI Uniform Crime Reporting via the Crime Data Explorer. Agency-level data, pulled directly. No third-party aggregators, no proprietary score.
- Metric: Violent crime rate per 100,000 residents (murder + rape + robbery + aggravated assault), most recent fully-reported year.
- National decile: Portsmouth's rate placed against all FBI-reporting U.S. cities with population ≥ 25,000. 1 = safest.
- State decile: Same calculation restricted to New Hampshire cities with population ≥ 10,000.
- Letter grade: 1–3 = A · 4–5 = B · 6–7 = C · 8 = D · 9–10 = F.
- Refresh: Twice a year. The FBI typically releases the prior year's full data each September.
- Limits: The FBI relies on local agency reporting. Rates reflect what was reported, not what occurred.
Want crime data for your application?
SpotCrime's Real-Time Crime Data API delivers incident-level data, not just aggregate grades. Used by family-safety apps, real-estate platforms, executive protection teams, and government agencies.