Photo: USFWS Mountain-Prairie · CC BY 2.0Who polices Derby, and what they report
Derby has no police department of its own: it’s an unincorporated community (a census-designated place) in Adams County. The Adams County Sheriff’s Office reports to the FBI for the parts of the county without police of their own, so there are no figures for Derby alone, and no Safety Grade.
What stands out about safety in Derby
Policed by the county
Derby is a census-designated place, with no town government. Crimes there are reported to the FBI inside the Adams County Sheriff’s Office’s totals for the county. County police ↓
Counts, not rates
The FBI doesn’t publish how many people the Adams County Sheriff’s Office covers, so its totals can’t be turned into a per-resident rate or a grade for Derby. County police ↓
The nearest graded towns
The closest Colorado towns with their own police figures are Thornton (C−, 6 mi), Denver (D−, 6 mi), Northglenn (D, 6 mi). Nearby towns can differ a lot from Derby. Nearest ↓
Written from the FBI data on this page. Figures are crimes reported to police, not convictions.
What the Adams County Sheriff’s Office reports
Crimes reported to the FBI for the whole area the department covers, by year.
Reports to the FBI for the parts of Adams County without police of their own, which include Derby.
Property crimes
Violent crimes
2025 offenses reported by the Adams County Sheriff’s Office
Counts, not rates: the FBI doesn’t publish how many people each agency covers. FBI Uniform Crime Reporting, Tables 10–11.
The nearest Colorado towns with a Safety Grade
Each town’s own police figures, per 1,000 residents a year, 2023–2025.
| Town | Grade | Distance | Violent | Property |
|---|---|---|---|---|
| Thornton | C− | 6 mi | 2.6 | 26.9 |
| Denver | D− | 6 mi | 9.6 | 48.6 |
| Northglenn | D | 6 mi | 4.5 | 27.2 |
| Commerce City | D | 7 mi | 7.7 | 27.3 |
| Westminster | D | 8 mi | 3.0 | 33.4 |
| Glendale | D− | 10 mi | 18.5 | 162.2 |
Straight-line distance from the center of Derby. Nearby towns can differ a lot from Derby.
Three people died in crashes on Derby’s roads in 2019–2023
Derby had 3 fatal crashes in five years, in which three people died; 1 was a pedestrian and 1 was a cyclist.
That is about what is typical for Colorado towns of 5,000–25,000 people: at their median rate (3.5 deaths per 100,000 residents a year), a town of Derby’s size would see about 1 in five years. With numbers this small, a death or two either way changes the picture, so Derby’s own rate (7.1) is context, not a ranking.
Deaths are counted where the crash happened, not where the people lived: a highway through town adds through-traffic deaths, and residents’ own risk on roads elsewhere isn’t here. Town rates sit below state and U.S. rates because a third of fatal crashes happen outside any town. Road safety is described here and is not part of the Safety Grade. Source: NHTSA Fatality Analysis Reporting System (FARS), 2019–2023.
Derby and its neighbors
How reported crime compares across the town line. Tap a town to see its safety page.
| Town | Grade | Violent | Property |
|---|---|---|---|
| Commerce City | D | 7.7 | 27.3 |
Crimes reported to the FBI per 1,000 residents a year, 2023–2025.
What this data can and can’t tell you
- It’s reported crime. Only incidents reported to and recorded by police appear here. Many crimes are never reported to police.
- A county agency covers a wide area. Its totals mix many communities, so they say little about any one of them.
- Gaps are real gaps. A missing year means the department didn’t report a full year, not that nothing happened.
How the grade is calculated, for every town: How TownRatings grades safety →
Questions about safety in Derby
Is Derby, CO safe?
There is no Safety Grade for Derby. Derby has no police department of its own: it’s an unincorporated community (a census-designated place) in Adams County. The Adams County Sheriff’s Office reports to the FBI for the parts of the county without police of their own, so there are no figures for Derby alone, and no Safety Grade. The nearest Colorado towns with a grade are Thornton (C−, 6 mi), Denver (D−, 6 mi), Northglenn (D, 6 mi).
Who polices Derby?
The Adams County Sheriff’s Office. Derby is an unincorporated community, and the department reports to the FBI for the parts of Adams County without police of their own.
Heads-up board
Neighbors looking out for each other in Derby.
Your answer becomes a post in Town Square.
Please don’t name or describe individuals. In an emergency, call 911.
Crime: FBI Uniform Crime Reporting Program, Crime Data Explorer: offenses known to law enforcement by city, and state and national rates. Counts are crimes reported to police, not convictions. The Safety Grade is our own summary of that data, not an official rating. Road deaths: NHTSA Fatality Analysis Reporting System (FARS), 2019–2023. This isn’t an official statement of public safety. In an emergency, call 911.