Crime · ZIP 03801
Crime in Portsmouth (NH), NH
ZIP 03801 (New Hampshire) — crime summary sourced from FBI UCR. Data lands this week as the FBI UCR ingestion pipeline rolls out.
Last verified 2026-04-26 · methodology
What lands here
Pages show per-100k rates (never raw counts) for major offense categories, the reporting agency, and whether reporting was complete for the year.
Source & refresh
FBI UCR. Refreshed weekly rolling uploads. Stale data is flagged, never silently served. Primary source →
Limitations specific to this source
UCR has known reporting gaps for some agencies and years. zipradar flags missing reports rather than interpolating. Small agencies may not participate at all.
New Hampshire context
Radon, lead in older housing
New Hampshire is uniformly Zone 1 radon. Older Manchester + Nashua + Portsmouth housing stock carries lead-service-line risk. Coastal flood zones limited to small NH coastline.
See New Hampshire state page for the full state-level rollup across all 12 dimensions.
Read more on crime
Editorial deep-dives explaining the source data, its limits, and how to read it.
FBI UCR and NIBRS — what crime statistics actually show (and don't)
The FBI's Uniform Crime Reporting (UCR) program and its successor NIBRS aggregate crime data from local agencies. Plain-English guide to what gets reported, what doesn't, and how to read the numbers.
Reading FBI UCR national crime trends — what 2020–2025 actually shows
Plain-English guide to recent US crime data: the 2020 spike, the 2021–2024 normalization, and how the UCR-to-NIBRS transition complicates year-over-year reads.
Data staleness — when to re-check zipradar before making a decision
Federal data refreshes on different cadences. Here's when zipradar's snapshot is fresh enough for your decision and when you need to verify with the primary source.
Full dashboard for ZIP 03801
Crime is one of twelve dimensions zipradar federates per address. See the full federated summary for ZIP 03801:
Open Portsmouth (NH), NH dashboard →