Naperville, IL has a A safety grade (84/100) with a violent crime rate of 84 per 100,000, 76% below the national average.
FBI UCR 2024 · per-capita rates · large city
Naperville, IL Crime Rate & Safety
At 150,521 residents, Naperville is a large city: FBI UCR Table 8 rates (per 100,000) here are read against IL and U.S. averages before the offense-family breakdown.
Naperville, IL carries a PlainCrime A safety grade with violent crime 76% below the U.S. average
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Naperville, IL shows violent crime at 83.7 per 100,000 residents and property crime at 883.6 per 100,000. Violent crime runs 76% below the U.S. average. PlainCrime assigns grade A from those rates. Figures are voluntary agency submissions joined to population denominators; incomplete coverage can move the number.
A safety grade
83.7/100K violent
883.6/100K property
-76% vs U.S.
What the 2024 FBI UCR record shows for Naperville, IL
Comparable rate records
Naperville's closest reported-rate comparisons are in the Illinois cohort
The nearest comparable 2024 records to Naperville's 83.7 violent-crime rate per 100,000 are Libertyville (83.9), Fairbury (84.4), Oregon (84.5), Round Lake Beach (82.6). These are same-year agency submissions that pass the same completeness screen, not a claim that the cities have identical conditions. They make the cohort position above checkable against named records instead of a generic state average.
2020–2024 direction
The reported violent-crime rate ended the window higher
Across 5 comparable reporting years, the rate moved from 66.4 per 100,000 in 2020 to 83.7 in 2024 (+26.1%). The highest observed value was 83.7 in 2024 and the lowest 30.3 in 2021. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
Property-offense composition
Larceny-theft dominates the property total more than it does across the cohort
Larceny-theft is 85.5% of reported property offenses in Naperville, against a cohort median of 70.2%. The remainder is burglary (99) and motor vehicle theft (94). Composition differences of this size usually track what kinds of places and property are present in a jurisdiction.
Position in the state cohort
Naperville sits mid-pack among comparable Illinois cities
At 83.7 reported violent offenses per 100,000 residents in 2024, Naperville ranks 287 of 506 — above 219 of the 505 other Illinois cities whose 2024 submission passes this site’s completeness test. That is -16.9% against the cohort median of 100.7. Cities that did not report, or that reported implausibly low totals, are excluded from this cohort rather than counted as low-crime.
Property counts dominate Naperville's FBI UCR Table 8 municipal row. Per-100,000 rates use the reporting-year population on that row; cities that fail the completeness test stay out of rate rankings. A citywide figure rarely describes any single neighbourhood inside the municipal boundary.
On a large city row, these are citywide reported offense totals - not neighbourhood advice. Conditions vary by place and time; reporting rates differ across jurisdictions.
Naperville's 2024 municipal footprint
Across 39.4 Census sq mi, Naperville logged 33.8 property and 3.2 violent offenses per square mile in 2024.
Naperville's 2024 book concentrates in larceny-theft (78% of 1,456 offenses; mix index 6,213).
Violent offenses are only 9% of the municipal total - a property-led book.
Density uses Census Gazetteer land area (39.4 sq mi); mix index is HHI x 10,000 on the offense-type shares above. Distinct from the per-100K rates in the hero.
Violent rate moved most (2023→2024)
Violent Crime Rate
+27%
65.9 → 83.7/100K
Property Crime Rate
+1.4%
871.5 → 883.6/100K
Property offenses lead Naperville's 2024 record
Offense
Count
Rate /100K
vs US avg
vs IL
Property Crime
1,330
883.6
1711
1664.8
Larceny-Theft
1,137
755.4
-
-
Burglary
99
65.8
-
-
Motor Vehicle Theft
94
62.4
-
-
Arson
1
0.7
-
-
Violent Crime
126
83.7
352
277.5
Aggravated Assault
57
37.9
-
-
Rape
45
29.9
-
-
Robbery
23
15.3
-
-
Murder
1
0.7
-
-
Naperville Crime Trend (2020-2024)
Naperville property crime rate trend
Lead series · fell across 5 comparable years · FBI UCR
Source: FBI Uniform Crime Reporting (UCR) Program · split lines are the U.S. national averages
Naperville Police Department
Reporting agency for Naperville NIBRS-participating
Naperville Police Department filed the 2024 UCR row behind Naperville's 1,456 reported offenses (5-year span 2020-2024).
This agency reports via NIBRS, the incident-based system that captures more detail per offense (multiple crimes per incident, victim/offender data) than the older summary counts.
Similar-Size Cities in Illinois
Crime rates read differently at different scales, so these are the Illinois cities closest to Naperville in population. Their populations run from 87,155 to 176,688, against 150,521 here. Or use our
side-by-side compare tool
to benchmark two cities directly.
In 2024, Naperville reported 126 violent crimes and 1,330 property crimes, for a total of 1,456 reported offenses.
Is crime increasing or decreasing in Naperville?
From 2023 to 2024, Naperville's violent crime rate increased by 27%, and the property crime rate increased by 1.4%.
What is the most common crime in Naperville?
The most common crime type in Naperville is larceny-theft, accounting for 78.1% of all reported crimes (1,137 incidents in 2024).
Large-city read: Naperville's rates come from the FBI Uniform Crime Reporting (UCR) Program, CIUS Table 8, vintage 2024.
Incomplete reporters stay out of rate rankings. Cross-check population with Census ACS; state UCR programs for statewide context. Primary verify links: FBI.gov UCR, Census QuickFacts.
Disclaimer (large city): informational crime rates only - not legal, insurance, or personal-safety advice. Source: FBI UCR. Ask a qualified professional before acting.
Source: FBI Uniform Crime Reporting (UCR) Program CIUS Table 8 municipal crime rates · 2024 Naperville, IL rates use the reporting-year population on the municipal row.