Monmouth, IL has a C safety grade (52/100) with a violent crime rate of 366 per 100,000, 4% above the national average.
Monmouth is a small municipal reporter (8,460 on the UCR row). Per-100,000 violent and property rates are shown with IL and U.S. context.
Monmouth, IL carries a PlainCrime C safety grade with violent crime 4% above the U.S. average
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Monmouth, IL shows violent crime at 366.4 per 100,000 residents and property crime at 1,371.2 per 100,000. Violent crime runs 4% above the U.S. average. PlainCrime assigns grade C from those rates. Figures are voluntary agency submissions joined to population denominators; incomplete coverage can move the number.
The verdict
Monmouth earns a C safety grade: violent crime runs 4% above the U.S. average, placing it higher-crime than most U.S. cities.
2020–2024 direction
Across 4 comparable reporting years, the rate moved from 215.2 per 100,000 in 2020 to 366.4 in 2024 (+70.3%). The highest observed value was 366.4 in 2024 and the lowest 199.3 in 2023. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
Position in the state cohort
At 366.4 reported violent offenses per 100,000 residents in 2024, Monmouth ranks 63 of 506 — above 443 of the 505 other Illinois cities whose 2024 submission passes this site’s completeness test. That is +267.7% against the cohort median of 99.7. Cities that did not report, or that reported implausibly low totals, are excluded from this cohort rather than counted as low-crime.
Comparable rate records
The nearest comparable 2024 records to Monmouth's 366.4 violent-crime rate per 100,000 are Atwood (365.6), Tuscola (369.3), Freeport (362.6), Athens (371.2). 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.
Offense mix
Violent offenses are 21.1% of the 147 Part I offenses reported in Monmouth for 2024, against a median of 11.2% across comparable Illinois cities — a gap of 9.9 points. Offense mix is shaped by which agencies report and how incidents are classified as well as by the underlying offenses, so it describes the reported record rather than a settled difference in conditions.
Property-offense composition
Larceny-theft is 59.5% of reported property offenses in Monmouth, against a cohort median of 70.3%. The remainder is burglary (42) and motor vehicle theft (5). Composition differences of this size usually track what kinds of places and property are present in a jurisdiction.
Property counts dominate Monmouth'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.
Small-city offense counts above are voluntary UCR submissions, not neighbourhood advice. Year-to-year swings can look large when the population base is modest.
| Offense | Count | Rate /100K |
|---|---|---|
| Property Crime | 116 | 1371.2 |
| Larceny-Theft | 69 | 815.6 |
| Burglary | 42 | 496.5 |
| Motor Vehicle Theft | 5 | 59.1 |
| Arson | 0 | 0 |
| Violent Crime | 31 | 366.4 |
| Aggravated Assault | 24 | 283.7 |
| Rape | 7 | 82.7 |
| Murder | 0 | 0 |
| Robbery | 0 | 0 |
The chart omits 2021 rather than drawing an unsupported zero or partial-coverage dip. The table preserves the year and marks the gap.
Lead series · fell across 4 comparable years · FBI UCR
Secondary series · rose · 2020-2024 · FBI UCR
| Year | Coverage | Population | Violent Rate | Property Rate |
|---|---|---|---|---|
| 2020 | Comparable | 8,828 | 215.2 | 1982.3 |
| 2021 | Insufficient reporting | 8,741 | - | - |
| 2022 | Comparable | 8,652 | 219.6 | 1421.6 |
| 2023 | Comparable | 8,530 | 199.3 | 1418.5 |
| 2024 | Comparable | 8,460 | 366.4 | 1371.2 |
Monmouth's crime figures on this page originate from Monmouth Police Department'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.
Crime rates read differently at different scales, so these are the Illinois cities closest to Monmouth in population. Their populations run from 8,277 to 8,592, against 8,460 here. Or use our side-by-side compare tool to benchmark two cities directly.
These Illinois cities report the closest violent-crime rates to Monmouth's 366.4/100K (same FBI UCR vintage rules; size peers above are excluded so the two lists stay distinct).
Small-city read: Monmouth is sourced from FBI UCR Table 8 for 2024; rates use that row's population.
Small-city rows use the same per-100,000 formula; a few unreported years can leave gaps in the trend table. Verify the agency's submission on FBI.gov UCR.
Disclaimer (small city): UCR counts here are informational only. They are not a victimization probability. Source: FBI UCR Program.
Small-city rate methodology for how Monmouth's small city row is sourced and ranked.
Source: FBI Uniform Crime Reporting (UCR) Program CIUS Table 8 municipal crime rates · 2024 Monmouth, IL rates use the reporting-year population on the municipal row.
Bulk download: city crime dataset (CSV/JSON)
Every figure on PlainCrime is rendered directly from FBI Uniform Crime Reporting (UCR) source data, no number is typed in by an editor. Monmouth is scored as a small-city UCR reporter (8,460 on the row). See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.