Crime Grade · FBI UCR Data · 2025
Alton, IL Crime Grade
How Alton 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 Alton, IL was 798.3 per 100,000 residents (198 incidents over a population of 24,803). That puts Alton 145% above the U.S. rate of 325.3 and 225% above the Illinois statewide rate of 245.7.
That ranks Alton #3,595 of 3,771 ranked U.S. cities, safer than 5% of them, and #202 of 214 in Illinois. Violent crime is down 16% year over year and up 43% over the last five years.
Alton, IL crime — key facts
- National Crime Grade
- F (10/10)
- Illinois Grade
- F (10/10)
- Violent crime rate
- 798.3 / 100k
- National rank
- #3,595 of 3,771
- IL rank
- #202 of 214
- Safer than
- 5% of U.S. cities
- Year over year
- down 16%
- 5-year change
- up 43%
- Population
- 24,803
- Reporting agency
- Alton Police Department
- Data year
- 2025 · FBI UCR
Reported by Alton Police Department (FBI ORI IL0600100) to the FBI Uniform Crime Reporting Program. Download the full dataset (CSV) · methodology.
Violent crime rate, 5-year trend
Per 100,000 residents. Alton (red), Illinois (blue), U.S. average (gray dashed).
Alton 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 | 556.6(144) | 916.2(231) | 935.1(234) | 951.3(236) | 798.3(198) |
| Murder | 7.7(2) | 4.0(1) | 12.0(3) | 12.1(3) | 8.1(2) |
| Rape | 85.0(22) | 202.3(51) | 143.9(36) | 137.0(34) | 125.0(31) |
| Robbery | 69.6(18) | 95.2(24) | 48.0(12) | 112.9(28) | 48.4(12) |
| Aggravated assault | 394.3(102) | 614.8(155) | 731.3(183) | 689.3(171) | 616.9(153) |
| Property crime | 3173.4(821) | 3161.2(797) | 3100.9(776) | 2700.6(670) | 2745.6(681) |
| Burglary | 463.8(120) | 499.8(126) | 703.3(176) | 886.8(220) | 709.6(176) |
| Larceny | 2299.9(595) | 2007.0(506) | 1998.0(500) | 1563.9(388) | 1830.4(454) |
| Motor vehicle theft | 374.9(97) | 614.8(155) | 363.6(91) | 225.7(56) | 169.3(42) |
How the Crime Grade is calculated
- What is the source of the Alton, 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 Alton 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 Alton calculated?
- Alton'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 Alton 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 Alton to other places
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