| Statistic | Reportedincidents | /100k people | Derby/100k people | Connecticut/100k people | National/100k people |
| Total crime | 356 | n/a (estimate) | 2,862 | 1,502 | 2,119 |
| Murder | 0 | n/a | 0.0 | 2.4 | 5.0 |
| Rape | 1 | n/a | 8.0 | 17.9 | 37.5 |
| Robbery | 6 | n/a | 48.2 | 38.1 | 60.6 |
| Assault | 32 | n/a | 257.3 | 77.5 | 256.1 |
| Violent crime | 39 | n/a (estimate) | 314 | 136 | 359 |
| Burglary | 35 | n/a | 281.4 | 117.3 | 229.2 |
| Theft | 189 | n/a | 1,519.7 | 1,013.7 | 1,272.1 |
| Vehicle theft | 93 | n/a | 747.8 | 235.0 | 258.8 |
| Property crime | 317 | n/a (estimate) | 2,549 | 1,366 | 1,760 |

Crime is typically categorized into two main types: violent and property crimes. Violent crimes encompass offenses such as murder, rape, robbery, and assault, while property crimes include burglary, theft, and vehicle theft. Based on the most recent report, the Derby crime rate is higher than the national average by 35.1%. Specifically, there were 39 violent crimes in Derby, equivalent to 314 per 100,000 individuals, lower than the national average by 12.7%. Furthermore, Derby recorded 317 property crimes, amounting to 2549 per 100,000 residents, which was higher than the average by 44.8%.
Derby exhibits a violent crime rate that closely echoes the national average reported by all cities, with 314 incidents per 100,000 people, in line with the nationwide figure of 359. This uniformity underscores Derby as a community where safety standards align seamlessly with the broader national context, delivering residents a steadfast and dependable sense of security.
In the most recently reported crime year, Derby registered zero reported homicides. This statistic not only designates the area as an exemplar of security but also emanates a profound sense of safety within its community. A minimal incidence of severe violent crime not only fosters a strong sense of well-being among residents but also sets a commendable standard for other regions aiming to cultivate similarly safe surroundings.
The surge in vehicle thefts is a concerning trend across the United States, and Derby is no exception, experiencing one of the nation's highest vehicle theft rates. Last year, Derby reported a total of 93 vehicle thefts, resulting in 748 stolen vehicles per 100,000 people. This places the city in the lowest 10% tier among all cities, indicating that 90% of cities have less stolen vehicles. The probability of a vehicle being stolen stands at 1 in 134, underscoring the need for heightened vigilance and security measures.
What is the prevailing sentiment among Derby residents regarding the state of crime? A comprehensive survey conducted by AreaVibes, involving 7 respondents, sheds light on this matter. The results were as follows: 86% of Derby residents expressed a notable sense of security, asserting that crime was virtually non-existent in their community, and they felt at ease strolling the streets after dark. While, 14% of those surveyed held a contrasting viewpoint, perceiving a higher incidence of crime, leading them to feel apprehensive about walking alone at night.
Is Derby a safe place to live? While the answer may not be straightforward due to variations in safety levels across the city, gaining an understanding of the overall crime rate can prove to be advantageous. In general, Derby has a crime rate that is higher than the national average by 35%. Breaking this down on a daily basis, it translates to 0.98 daily incidents, encompassing 0.11 violent crimes and 0.87 property crimes. Evaluating these statistics can aid in forming a more informed perspective on the safety of Derby as a potential place to call home.
Examining year-over-year crime data provides insights into short-term trends with regards to the crime activity in Derby. This analysis involves comparing crime rates from one year to the next, enabling the identification of patterns and fluctuations in crime. Such information proves invaluable to residents seeking to make well-informed decisions about their choice of residence. In the most recent year, compared to the previous one, total crime in Derby has decreased by 8.7%. Specifically, violent crime has decreased by 13.3%, while property crime has decreased by 8.1%. This data empowers individuals with a clearer understanding of the evolving safety landscape in Derby.
Derby reports an unemployment rate of 5.7%, contrasting with the national average of 4.9%. Constrained employment opportunities or a prevalence of low-paying positions can contribute to elevated rates of unemployment and underemployment. Areas where individuals contend with joblessness or insufficient wages may display heightened susceptibility to an increase in criminal activities attributed to economic insecurity. Conversely, regions characterized by robust employment rates often witness a decrease in overall Derby crime rates.
Derby has a population density of 2508.9 people per square mile, contrasting with the national average of 90.6 people per square mile. High population density cities are often large urban hubs teeming with diverse economic opportunities. Within these environments, income disparities can become pronounced, leading to higher poverty levels. This economic divide may contribute to an uptick in property crimes and, occasionally, violent crimes. In contrast, areas characterized by low population density typically exhibit lower Derby crime rates.
In Derby, the cost of living is 10.74% higher than the national average. A substantial cost of living can burden residents, particularly those with constrained financial means. When individuals contend with steep housing expenses, grocery bills, utility costs, healthcare and essential needs that strain their budgets, they may turn to criminal activities, such as theft or fraud, as a means of financial survival. Conversely, cities characterized by a more affordable cost of living may alleviate economic pressures, which could potentially lead to decreased crime rates.

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| Item | Derby | Connecticut | National |
| Law enforcement employees (officers & civilians) | 33 | 5,593 | 558,732 |
| Police officers & civilians /1000 residents | 2.6 | 2.6 | 3.3 |
| State | Total offenders | Connecticut /100K | National /100K |
| Connecticut | 6,088 | 184 | 266 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Southport, CT | 1,747 | 19 | 192 | 211 |
| Woodmont, CT | 1,664 | 27 | 266 | 293 |
| Newtown, CT | 1,962 | 18 | 351 | 369 |
| Shelton, CT | 42,033 | 42 | 709 | 751 |
| Cheshire Village, CT | 6,632 | 79 | 794 | 873 |
| Heritage Village, CT | 4,620 | 92 | 925 | 1,018 |
| Naugatuck, CT | 32,241 | 50 | 1,021 | 1,071 |
| Derby, CT | 12,684 | 314 | 2,549 | 2,862 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Belmont, NC | 12,690 | 383 | 2,833 | 3,216 |
| Woodward, OK | 12,677 | 283 | 1,417 | 1,701 |
| West Plains, MO | 12,673 | 361 | 1,806 | 2,167 |
| Northlake, IL | 12,696 | 124 | 1,719 | 1,843 |
| Minneola, FL | 12,664 | 200 | 1,063 | 1,262 |
| Derby, CT | 12,684 | 314 | 2,549 | 2,862 |