Crime Grade · FBI UCR Data · 2025
Crystal Lake, IL Crime Grade
How Crystal Lake grades for violent crime against every other reporting U.S. city — and against the rest of Illinois — based on the FBI's Uniform Crime Reporting data.
National
4/10
vs. all U.S. cities ≥ 25,000 population
Illinois
5/10
vs. Illinois cities ≥ 10,000 population
In 2025, the violent crime rate in Crystal Lake, IL was 107.6 per 100,000 residents (45 incidents over a population of 41,838). That puts Crystal Lake Infinity% above the U.S. rate of 0.0 and 56% below the Illinois statewide rate of 245.7.
That ranks Crystal Lake #1,210 of 3,771 ranked U.S. cities, safer than 68% of them, and #103 of 214 in Illinois. Violent crime is roughly flat year over year and down 5% over the last five years.
Crystal Lake, IL crime — key facts
- National Crime Grade
- B (4/10)
- Illinois Grade
- B (5/10)
- Violent crime rate
- 107.6 / 100k
- National rank
- #1,210 of 3,771
- IL rank
- #103 of 214
- Safer than
- 68% of U.S. cities
- Year over year
- roughly flat
- 5-year change
- down 5%
- Population
- 41,838
- Reporting agency
- Crystal Lake Police Department
- Data year
- 2025 · FBI UCR
Reported by Crystal Lake Police Department (FBI ORI IL0560300) to the FBI Uniform Crime Reporting Program. Download the full dataset (CSV) · methodology.
About Crystal Lake, IL
Also known as
- Nunda
- Brooklyn
- Crystal Lake Station
- Crystallake
- North Crystal Lake
- Dearborn
- Chrystal Lake
Name history sourced from the USGS Geographic Names Information System (GNIS) — public-domain federal geographic-names data.
Violent crime rate, 5-year trend
Per 100,000 residents. Crystal Lake (red), Illinois (blue), U.S. average (gray dashed).
Crystal Lake 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 | 2019 | 2020 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Violent crime | 112.7(45) | 93.1(37) | 105.2(43) | 107.1(44) | 107.6(45) |
| Murder | 2.5(1) | 2.5(1) | 0.0(0) | 0.0(0) | 0.0(0) |
| Rape | 27.5(11) | 27.7(11) | 58.7(24) | 51.1(21) | 69.3(29) |
| Robbery | 22.5(9) | 17.6(7) | 2.4(1) | 4.9(2) | 7.2(3) |
| Aggravated assault | 60.1(24) | 45.3(18) | 44.0(18) | 51.1(21) | 31.1(13) |
| Property crime | 1229.2(491) | 1054.7(419) | 1059.2(433) | 1112.6(457) | 1099.5(460) |
| Burglary | 62.6(25) | 60.4(24) | 93.0(38) | 104.7(43) | 47.8(20) |
| Larceny | 1149.1(459) | 956.6(380) | 905.1(370) | 927.6(381) | 996.7(417) |
| Motor vehicle theft | 17.5(7) | 35.2(14) | 51.4(21) | 73.0(30) | 45.4(19) |
How the Crime Grade is calculated
- What is the source of the Crystal Lake, IL Crime Grade?
- FBI Uniform Crime Reporting via the Crime Data Explorer. Agency-level data, pulled directly. No third-party aggregators, no proprietary score.
- What metric does the Crystal Lake Crime Grade use?
- Violent crime rate per 100,000 residents (murder + rape + robbery + aggravated assault), most recent fully-reported year.
- How is the national decile for Crystal Lake calculated?
- Crystal Lake's rate placed against all FBI-reporting U.S. cities with population ≥ 25,000. 1 = safest.
- How is the Illinois state decile calculated?
- Same calculation restricted to Illinois cities with population ≥ 10,000.
- How do decile scores convert to a letter grade?
- 1–3 = A · 4–5 = B · 6–7 = C · 8 = D · 9–10 = F.
- How often is the Crystal Lake Crime Grade refreshed?
- Twice a year. The FBI typically releases the prior year's full data each September.
- What are the limits of this Crime Grade?
- The FBI relies on local agency reporting. Rates reflect what was reported, not what occurred.
Nearby cities in Illinois
Comparable Illinois cities by population.
Compare Crystal Lake to other places
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