registered sex offenders live in Dover — that's 1 in every 668 residents, or 15 per 10,000, 21% below the New Hampshire state average.
Dover has 15 registered sex offenders per 10,000 residents — 21% below the New Hampshire state average of 19.1, and below the national average of about 24. Per-capita rates are the fair way to compare cities of different sizes.
Against New Hampshire cities of similar size, Dover has the 2nd-highest rate per resident:
| # | City | Population | Registered offenders | Per 10,000 residents |
|---|---|---|---|---|
| 1 | Concord | 43,996 | 234 | 53.2 |
| 2 | Dover | 32,749 | 49 | 15.0 |
| 3 | Rochester | 32,496 | 33 | 10.2 |
| 4 | Keene | 23,034 | 32 | 13.9 |
| 5 | Portsmouth | 21,959 | 18 | 8.2 |
Where Dover's 49 registered offenders live, by the ZIP code on their registry record. Dover (03820) tops the list with 48 — 98% of the citywide total.
| # | Area | ZIP code | Registered offenders | Share of city |
|---|---|---|---|---|
| 1 | Dover | 03820 | 98.0% |
Counts as of July 2026, compiled from official registry records. Area names reflect the town or neighborhood most commonly listed on registry records for that ZIP.
New Hampshire classifies registrants by assessed re-offense risk — Level 1 (low, never public), Level 2 (moderate), and Level 3 (high, always public with active police notification).
Citywide numbers can't tell you who lives on your street. The free Predator Map app searches any Dover address and shows every registered offender around it on an interactive map — photos, offenses, and registered addresses from official registry records. You can also search the official New Hampshire Registration of Criminal Offenders (DOS) directly.
As of July 2026, there are 49 registered sex offenders in Dover, New Hampshire — about 15 for every 10,000 residents, 21% below the New Hampshire state average. Dover ranks #4 of the 8 largest New Hampshire cities by offender count.
Dover, ZIP code 03820, has the most registered sex offenders in Dover with 48 — 98% of the city's total.
Use the free Predator Map app: search any Dover address and every registered offender nearby appears on an interactive map with photos, offense details, and registered addresses from official registry records.
Yes. Predator Map Pro monitors up to 5 addresses daily and sends push and email alerts when a registered offender moves in nearby, a new offender registers, or someone moves away.
Free search for any Dover address — and daily monitoring with instant alerts when something changes.
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Methodology: Statistics are compiled from aggregated official state registry records and refreshed monthly. City figures count the city listed on each registry record. Per-capita rates use 2020 U.S. Census populations. Aggregated counts can exceed what public registry websites display because some classification levels are excluded from public searches. Figures are estimates and change daily as registries update — always verify individual records with the official state registry.