Derby, CT has a C safety grade (46/100) with a violent crime rate of 314 per 100,000, 11% below the national average.
FBI UCR 2024 · per-capita rates · mid-size city
Derby (12,437 people) sits in the mid-size municipal band. This page opens with per-100,000 FBI UCR rates, then CT and national benchmarks.
Data updated 2026-08-24
Derby, CT carries a PlainCrime C safety grade with violent crime 11% below the U.S. average
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Derby, CT shows violent crime at 313.6 per 100,000 residents and property crime at 2,548.8 per 100,000. Violent crime runs 11% below the U.S. average. PlainCrime assigns grade C from those rates. Figures are voluntary agency submissions joined to population denominators; incomplete coverage can move the number.
Position in the state cohort
At 313.6 reported violent offenses per 100,000 residents in 2024, Derby ranks 7 of 94 — above 87 of the 93 other Connecticut cities whose 2024 submission passes this site’s completeness test. That is +439.5% against the cohort median of 58.1. Cities that did not report, or that reported implausibly low totals, are excluded from this cohort rather than counted as low-crime.
Comparable rate records
The nearest comparable 2024 records to Derby's 313.6 violent-crime rate per 100,000 are Waterbury (322.5), Danbury (262.0), Bridgeport (392.9), Norwich (205.9). These are same-year agency submissions that pass the same completeness screen, not a claim that the cities have identical conditions. They make the cohort position above checkable against named records instead of a generic state average.
Property-offense composition
Larceny-theft is 59.6% of reported property offenses in Derby, against a cohort median of 76.5%. The remainder is burglary (35) and motor vehicle theft (93). Composition differences of this size usually track what kinds of places and property are present in a jurisdiction.
Offense mix
Violent offenses are 11.0% of the 356 Part I offenses reported in Derby for 2024, against a median of 4.7% across comparable Connecticut cities — a gap of 6.3 points. Offense mix is shaped by which agencies report and how incidents are classified as well as by the underlying offenses, so it describes the reported record rather than a settled difference in conditions.
2020–2024 direction
Across 5 comparable reporting years, the rate moved from 268.7 per 100,000 in 2020 to 313.6 in 2024 (+16.7%). The highest observed value was 368.9 in 2021 and the lowest 218.1 in 2023. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
Property counts dominate Derby's FBI UCR Table 8 municipal row. Per-100,000 rates use the reporting-year population on that row; cities that fail the completeness test stay out of rate rankings. A citywide figure rarely describes any single neighbourhood inside the municipal boundary.
Mid-size municipal totals above are reported offenses, not safety advice for any single block. Reporting completeness still varies by year and agency.
Across 5.1 Census sq mi, Derby logged 62.7 property and 7.7 violent offenses per square mile in 2024.
Derby leans on larceny-theft at 53% of reported offenses, with a moderate mix index of 3,683.
Violent offenses are only 11% of the municipal total - a property-led book.
Derby offense mix (2024)
Density uses Census Gazetteer land area (5.1 sq mi); mix index is HHI x 10,000 on the offense-type shares above. Distinct from the per-100K rates in the hero.
| Offense | Count | Rate /100K |
|---|---|---|
| Property Crime | 317 | 2548.8 |
| Larceny-Theft | 189 | 1519.7 |
| Motor Vehicle Theft | 93 | 747.8 |
| Burglary | 35 | 281.4 |
| Arson | 4 | 32.2 |
| Violent Crime | 39 | 313.6 |
| Aggravated Assault | 32 | 257.3 |
| Robbery | 6 | 48.2 |
| Rape | 1 | 8 |
| Murder | 0 | 0 |
Lead series · fell across 5 comparable years · FBI UCR
Secondary series · rose · 2020-2024 · FBI UCR
| Year | Coverage | Population | Violent Rate | Property Rate |
|---|---|---|---|---|
| 2020 | Comparable | 12,281 | 268.7 | 2980.2 |
| 2021 | Comparable | 12,197 | 368.9 | 2828.6 |
| 2022 | Comparable | 12,243 | 359.4 | 3054.8 |
| 2023 | Comparable | 12,382 | 218.1 | 2754 |
| 2024 | Comparable | 12,437 | 313.6 | 2548.8 |
Derby Police Department filed the 2024 UCR row behind Derby's 356 reported offenses (5-year span 2020-2024).
This agency reports via NIBRS, the incident-based system that captures more detail per offense (multiple crimes per incident, victim/offender data) than the older summary counts.
Crime rates read differently at different scales, so these are the Connecticut cities closest to Derby in population. Their populations run from 11,179 to 13,481, against 12,437 here. Or use our side-by-side compare tool to benchmark two cities directly.
Derby sits at 313.6/100K violent (grade C); the Connecticut cities below are the nearest matches after size peers are removed.
Derby at 313.6/100K violent and 2,548.8/100K property - matched below outside Connecticut (≥10k pop, latest UCR vintage; not the in-state lists above).
313.6/100K here; nearest out-of-state matches.
2,548.8/100K here; violent-rate peers above excluded.
In 2024, Derby reported 39 violent crimes and 317 property crimes, for a total of 356 reported offenses.
From 2023 to 2024, Derby's violent crime rate increased by 43.8%, and the property crime rate decreased by 7.5%.
The most common crime type in Derby is larceny-theft, accounting for 53.1% of all reported crimes (189 incidents in 2024).
Mid-size read: Derby figures are FBI UCR CIUS Table 8 (vintage 2024), population-adjusted per 100,000.
Denominators are the reporting-year population on the municipal row. Incomplete years are dropped from rankings. Confirm at FBI Crime Data Explorer and Census.gov QuickFacts.
Disclaimer (mid-size municipal): figures are informational, not advice. FBI Uniform Crime Reporting (UCR) Program is the source. Consult a professional before decisions.
Mid-size rate methodology for how Derby's mid-size city row is sourced and ranked.
Source: FBI Uniform Crime Reporting (UCR) Program CIUS Table 8 municipal crime rates · 2024 Derby, CT rates use the reporting-year population on the municipal row.
Bulk download: city crime dataset (CSV/JSON)
Every figure on PlainCrime is rendered directly from FBI Uniform Crime Reporting (UCR) source data, no number is typed in by an editor. Derby is scored in the mid-size municipal band (12,437 on the row). See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.