Who polices Boulder Hill, and what they report
Boulder Hill has no police department of its own: it’s an unincorporated community (a census-designated place) in Kendall County. The Kendall 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 Boulder Hill alone, and no Safety Grade.
What stands out about safety in Boulder Hill
Policed by the county
Boulder Hill is a census-designated place, with no town government. Crimes there are reported to the FBI inside the Kendall County Sheriff’s Office’s totals for the county. County police ↓
Counts, not rates
The FBI doesn’t publish how many people the Kendall County Sheriff’s Office covers, so its totals can’t be turned into a per-resident rate or a grade for Boulder Hill. County police ↓
The nearest graded towns
The closest Illinois towns with their own police figures are Montgomery (B, 2 mi), Oswego (A−, 2 mi), Aurora (C+, 4 mi). Nearby towns can differ a lot from Boulder Hill. Nearest ↓
Written from the FBI data on this page. Figures are crimes reported to police, not convictions.
What the Kendall 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 Kendall County without police of their own, which include Boulder Hill.
Property crimes
Violent crimes
2025 offenses reported by the Kendall 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 Illinois towns with a Safety Grade
Each town’s own police figures, per 1,000 residents a year, 2023–2025.
| Town | Grade | Distance | Violent | Property |
|---|---|---|---|---|
| Montgomery | B | 2 mi | 1.2 | 9.4 |
| Oswego | A− | 2 mi | 0.6 | 5.3 |
| Aurora | C+ | 4 mi | 2.7 | 11.4 |
| Yorkville | A− | 6 mi | 0.8 | 4.7 |
| Sugar Grove | A | 7 mi | 0.2 | 3.8 |
| Plainfield | A− | 8 mi | 0.6 | 5.9 |
Straight-line distance from the center of Boulder Hill. Nearby towns can differ a lot from Boulder Hill.
One person died in crashes on Boulder Hill’s roads in 2019–2023
Boulder Hill had 1 fatal crash in five years, in which one person died.
That is about what is typical for Illinois towns of 5,000–25,000 people: at their median rate (6.8 deaths per 100,000 residents a year), a town of Boulder Hill’s size would see about 3 in five years. With numbers this small, a death or two either way changes the picture, so Boulder Hill’s own rate (2.2) 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.
Boulder Hill and its neighbors
How reported crime compares across the town line. Tap a town to see its safety page.
| Town | Grade | Violent | Property |
|---|---|---|---|
| Oswego | A− | 0.6 | 5.3 |
| Montgomery | B | 1.2 | 9.4 |
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 Boulder Hill
Is Boulder Hill, IL safe?
There is no Safety Grade for Boulder Hill. Boulder Hill has no police department of its own: it’s an unincorporated community (a census-designated place) in Kendall County. The Kendall 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 Boulder Hill alone, and no Safety Grade. The nearest Illinois towns with a grade are Montgomery (B, 2 mi), Oswego (A−, 2 mi), Aurora (C+, 4 mi).
Who polices Boulder Hill?
The Kendall County Sheriff’s Office. Boulder Hill is an unincorporated community, and the department reports to the FBI for the parts of Kendall County without police of their own.
Heads-up board
Neighbors looking out for each other in Boulder Hill.
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.