Crime Grade · FBI UCR Data · 2025
Derby, CT Crime Grade
How Derby grades for violent crime against every other reporting U.S. city — and against the rest of Connecticut — based on the FBI's Uniform Crime Reporting data.
National
4/10
vs. all U.S. cities ≥ 25,000 population
Connecticut
9/10
vs. Connecticut cities ≥ 10,000 population
In 2025, the violent crime rate in Derby, CT was 130.0 per 100,000 residents (17 incidents over a population of 13,072). That puts Derby 60% below the U.S. rate of 325.3 and 20% above the Connecticut statewide rate of 108.0.
Violent crime rate, 5-year trend
Per 100,000 residents. Derby (red), Connecticut (blue), U.S. average (gray dashed).
Derby 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 | 368.9(45) | 359.4(44) | 218.1(27) | 313.6(39) | 130.0(17) |
| Murder | 0.0(0) | 0.0(0) | 0.0(0) | 0.0(0) | 0.0(0) |
| Rape | 24.6(3) | 0.0(0) | 16.2(2) | 8.0(1) | 0.0(0) |
| Robbery | 98.4(12) | 89.8(11) | 56.5(7) | 48.2(6) | 76.5(10) |
| Aggravated assault | 246.0(30) | 269.5(33) | 145.4(18) | 257.3(32) | 53.5(7) |
| Property crime | 2828.6(345) | 3054.8(374) | 2754.0(341) | 2581.0(321) | 2172.6(284) |
| Burglary | 270.6(33) | 245.0(30) | 331.1(41) | 281.4(35) | 153.0(20) |
| Larceny | 2098.9(256) | 2180.8(267) | 1865.6(231) | 1519.7(189) | 1361.7(178) |
| Motor vehicle theft | 450.9(55) | 620.8(76) | 557.3(69) | 747.8(93) | 642.6(84) |
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: Derby's rate placed against all FBI-reporting U.S. cities with population ≥ 25,000. 1 = safest.
- State decile: Same calculation restricted to Connecticut 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.
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