County crime profile · 2024 · mid-size county · property-led
Iroquois County, IL
Iroquois County (27,077 people) sits in the mid-size county band in Illinois. This page opens with reported offense counts, then rates where a Census join exists.
Iroquois County, IL reported 115 violent crimes per 100,000 in FBI UCR 2024
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Iroquois County, IL agencies reported 31 violent and 114 property offenses. That equals about 115 violent and 421 property crimes per 100,000 using a verified Census population join. Table 10 coverage is a voluntary subset of U.S. counties.
2024 UCR year
31 violent offenses
115/100K violent rate
What the 2024 FBI UCR record shows for Iroquois County, IL
Position in the state cohort
Iroquois County reported a higher violent-crime rate than most comparable Illinois counties
At 114.5 reported violent offenses per 100,000 residents in 2024, Iroquois County ranks 2 of 77 — above 75 of the 76 other Illinois counties whose 2024 submission passes this site’s completeness test and carries a matched Census denominator. That is +207.1% against the cohort median of 37.3. Counties that did not report, or that reported implausibly low totals, are excluded from this cohort rather than counted as low-crime.
2021–2024 direction
The reported violent-crime rate ended the window higher
Across 4 comparable reporting years, the rate moved from 84.9 per 100,000 in 2021 to 114.5 in 2024 (+34.8%). The highest observed value was 114.5 in 2024 and the lowest 40.6 in 2022. 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 61.4% of reported property offenses in Iroquois County, against a cohort median of 51.7%. The remainder is burglary (36) and motor vehicle theft (8). Composition differences of this size usually track what kinds of places and property are present in a jurisdiction.
Mid-size county rows still aggregate voluntary UCR submissions. Per-100,000 rates need a matched 2020 Census population; unmatched stay count-only. County-wide totals rarely describe any single town inside the line.
Crime Breakdown (2024) · property-led · mid-size county
Category
Count
Property Crime
114
Burglary
36
Larceny-Theft
70
Motor Vehicle Theft
8
Arson
0
Violent Crime
31
Murder
1
Rape
3
Robbery
2
Aggravated Assault
25
Reporting Agency
Iroquois County Sheriff's Office NIBRS-participating
Iroquois County's crime figures on this page originate from Iroquois County Sheriff's Office's submission to the FBI's Uniform Crime Reporting Program.
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 Counties in Illinois
A per-capita rate is easiest to read against places of similar scale, so these are the Illinois counties closest to Iroquois County in population. Their populations run from 22,035 to 30,163, against 27,077 here. Or launch the
side-by-side compare tool
to benchmark two jurisdictions directly.
Source: FBI Uniform Crime Reporting (UCR) Program, Crime in the United States (CIUS) Table 10.
FBI Table 10 supplies county offense counts but no resident population. Where this page shows a per-100,000 rate, the denominator is a separately matched 2020 U.S. Census Bureau county population; unmatched county rows remain count-only. Statewide comparisons draw on the state UCR program. Verify with FBI.gov UCR and Census.gov QuickFacts.