Crime Grade · FBI UCR Data · 2025
Naperville, IL Crime Grade
How Naperville 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
2/10
vs. all U.S. cities ≥ 25,000 population
Illinois
3/10
vs. Illinois cities ≥ 10,000 population
In 2025, the violent crime rate in Naperville, IL was 70.1 per 100,000 residents (108 incidents over a population of 154,062). That puts Naperville Infinity% above the U.S. rate of 0.0 and 71% below the Illinois statewide rate of 245.7.
Violent crime rate, 5-year trend
Per 100,000 residents. Naperville (red), Illinois (blue), U.S. average (gray dashed).
Naperville 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 | 2020 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Violent crime | 66.4(99) | 57.1(85) | 65.9(99) | 85.7(129) | 70.1(108) |
| Murder | 0.7(1) | 1.3(2) | 0.0(0) | 0.7(1) | 0.0(0) |
| Rape | 12.7(19) | 30.2(45) | 26.0(39) | 31.9(48) | 26.0(40) |
| Robbery | 19.4(29) | 9.4(14) | 11.3(17) | 15.3(23) | 13.0(20) |
| Aggravated assault | 33.5(50) | 16.1(24) | 28.6(43) | 37.9(57) | 31.2(48) |
| Property crime | 2318.0(3,457) | 830.6(1,237) | 871.5(1,309) | 892.2(1,343) | 563.4(868) |
| Burglary | 106.6(159) | 63.8(95) | 73.9(111) | 67.1(101) | 39.6(61) |
| Larceny | 2151.7(3,209) | 725.8(1,081) | 739.7(1,111) | 762.7(1,148) | 482.9(744) |
| Motor vehicle theft | 57.7(86) | 38.3(57) | 56.6(85) | 61.8(93) | 38.9(60) |
How the Crime Grade is calculated
- Source: FBI Uniform Crime Reporting via the Crime Data Explorer. Agency-level data, pulled directly. No third-party aggregators, no proprietary score.
- Metric: Violent crime rate per 100,000 residents (murder + rape + robbery + aggravated assault), most recent fully-reported year.
- National decile: Naperville's rate placed against all FBI-reporting U.S. cities with population ≥ 25,000. 1 = safest.
- State decile: Same calculation restricted to Illinois cities with population ≥ 10,000.
- Letter grade: 1–3 = A · 4–5 = B · 6–7 = C · 8 = D · 9–10 = F.
- Refresh: Twice a year. The FBI typically releases the prior year's full data each September.
- Limits: The FBI relies on local agency reporting. Rates reflect what was reported, not what occurred.
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