Crime Grade · FBI UCR Data · 2025
Rock Island, IL Crime Grade
How Rock Island 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
10/10
vs. all U.S. cities ≥ 25,000 population
Illinois
10/10
vs. Illinois cities ≥ 10,000 population
In 2025, the violent crime rate in Rock Island, IL was 606.2 per 100,000 residents (220 incidents over a population of 36,292). That puts Rock Island Infinity% above the U.S. rate of 0.0 and 147% above the Illinois statewide rate of 245.7.
That ranks Rock Island #3,429 of 3,771 ranked U.S. cities, safer than 9% of them, and #199 of 214 in Illinois. Violent crime is up 11% year over year and down 7% over the last five years.
Rock Island, IL crime — key facts
- National Crime Grade
- F (10/10)
- Illinois Grade
- F (10/10)
- Violent crime rate
- 606.2 / 100k
- National rank
- #3,429 of 3,771
- IL rank
- #199 of 214
- Safer than
- 9% of U.S. cities
- Year over year
- up 11%
- 5-year change
- down 7%
- Population
- 36,292
- Reporting agency
- Rock Island Police Department
- Data year
- 2025 · FBI UCR
Reported by Rock Island Police Department (FBI ORI IL0810800) to the FBI Uniform Crime Reporting Program. Download the full dataset (CSV) · methodology.
About Rock Island, IL
Also known as
- Stephenson
- Quad Cities
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. Rock Island (red), Illinois (blue), U.S. average (gray dashed).
Rock Island 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 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Violent crime | 651.8(239) | 585.1(212) | 549.0(197) | 544.1(195) | 606.2(220) |
| Murder | 5.5(2) | 30.4(11) | 11.1(4) | 5.6(2) | 5.5(2) |
| Rape | 27.3(10) | 8.3(3) | 11.1(4) | 11.2(4) | 24.8(9) |
| Robbery | 57.3(21) | 38.6(14) | 47.4(17) | 14.0(5) | 44.1(16) |
| Aggravated assault | 561.8(206) | 507.8(184) | 479.3(172) | 513.4(184) | 531.8(193) |
| Property crime | 2522.8(925) | 2757.0(999) | 2566.7(921) | 2734.3(980) | 2460.6(893) |
| Burglary | 327.3(120) | 463.6(168) | 373.4(134) | 920.7(330) | 418.8(152) |
| Larceny | 1729.1(634) | 1727.6(626) | 1493.7(536) | 1155.1(414) | 1460.4(530) |
| Motor vehicle theft | 425.5(156) | 543.7(197) | 666.1(239) | 638.9(229) | 562.1(204) |
How the Crime Grade is calculated
- What is the source of the Rock Island, 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 Rock Island 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 Rock Island calculated?
- Rock Island'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 Rock Island 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 Rock Island to other places
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