Denison, IA has a A safety grade (80/100) with a violent crime rate of 124 per 100,000, 65% below the national average.
FBI UCR 2024 · per-capita rates · small city
Denison is a small municipal reporter (8,037 on the UCR row). Per-100,000 violent and property rates are shown with IA and U.S. context.
Data updated 2026-08-24
Denison, IA carries a PlainCrime A safety grade with violent crime 65% below the U.S. average
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Denison, IA shows violent crime at 124.4 per 100,000 residents and property crime at 821.2 per 100,000. Violent crime runs 65% 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.
Small-count caution
Denison reported 10 violent offences in 2024 against a population of 8,037. At this volume one additional or one fewer report moves the per-100,000 rate noticeably, so the figure is better read as a data point than as a precise measurement, and year-to-year swings here are expected.
Comparable rate records
The nearest comparable 2024 records to Denison's 124.4 violent-crime rate per 100,000 are Le Claire (126.2), Marion (122.6), Walcott (129.3), Decorah (118.8). 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.
Position in the state cohort
At 124.4 reported violent offenses per 100,000 residents in 2024, Denison ranks 87 of 148 — above 61 of the 147 other Iowa cities whose 2024 submission passes this site’s completeness test. That is -15.0% against the cohort median of 146.3. Cities that did not report, or that reported implausibly low totals, are excluded from this cohort rather than counted as low-crime.
2020–2024 direction
Across 5 comparable reporting years, the rate moved from 121.4 per 100,000 in 2020 to 124.4 in 2024 (+2.5%). The highest observed value was 347.9 in 2022 and the lowest 121.4 in 2020. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
Property counts dominate Denison'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.
Based on 10 reported violent incidents in a population of 8,037. At this volume, one additional or one fewer report can shift the rate and letter grade noticeably; small-city crime counts are inherently more volatile year to year than large-city counts, so treat this grade as a data point, not a precise ranking.
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.
Across 6.5 Census sq mi, Denison logged 10.1 property and 1.5 violent offenses per square mile in 2024.
Denison's 2024 book concentrates in larceny-theft (67% of 76 offenses; mix index 4,848).
Violent offenses are only 13% of the municipal total - a property-led book.
Denison offense mix (2024)
Density uses Census Gazetteer land area (6.5 sq mi); mix index is HHI x 10,000 on the offense-type shares above. Distinct from the per-100K rates in the hero.
| Offense | Count | Rate /100K |
|---|---|---|
| Property Crime | 66 | 821.2 |
| Larceny-Theft | 51 | 634.6 |
| Motor Vehicle Theft | 8 | 99.5 |
| Burglary | 7 | 87.1 |
| Arson | 2 | 24.9 |
| Violent Crime | 10 | 124.4 |
| Aggravated Assault | 9 | 112 |
| Rape | 1 | 12.4 |
| Murder | 0 | 0 |
| Robbery | 0 | 0 |
Lead series · rose across 5 comparable years · FBI UCR
Secondary series · rose · 2020-2024 · FBI UCR
| Year | Coverage | Population | Violent Rate | Property Rate |
|---|---|---|---|---|
| 2020 | Comparable | 8,234 | 121.4 | 692.3 |
| 2021 | Comparable | 8,241 | 169.9 | 897.9 |
| 2022 | Comparable | 8,048 | 347.9 | 857.4 |
| 2023 | Comparable | 8,082 | 173.2 | 940.4 |
| 2024 | Comparable | 8,037 | 124.4 | 821.2 |
Denison Police Department filed the 2024 UCR row behind Denison's 76 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.
Crime rates read differently at different scales, so these are the Iowa cities closest to Denison in population. Their populations run from 7,345 to 8,643, against 8,037 here. Or use our side-by-side compare tool to benchmark two cities directly.
Denison sits at 124.4/100K violent (grade A); the Iowa cities below are the nearest matches after size peers are removed.
In 2024, Denison reported 10 violent crimes and 66 property crimes, for a total of 76 reported offenses.
From 2023 to 2024, Denison's violent crime rate decreased by 28.2%, and the property crime rate decreased by 12.7%.
The most common crime type in Denison is larceny-theft, accounting for 67.1% of all reported crimes (51 incidents in 2024).
Small-city read: Denison 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 Denison's small city row is sourced and ranked.
Source: FBI Uniform Crime Reporting (UCR) Program CIUS Table 8 municipal crime rates · 2024 Denison, IA 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. Denison is scored as a small-city UCR reporter (8,037 on the row). See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.