Rock Valley, IA has a A+ safety grade (98/100) with a violent crime rate of 0 per 100,000, .
FBI UCR 2024 · per-capita rates · small city
Rock Valley is a small municipal reporter (4,038 on the UCR row). Per-100,000 violent and property rates are shown with IA and U.S. context.
Data updated 2026-08-24
Rock Valley, IA FBI UCR crime rates and PlainCrime safety grade
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Rock Valley, IA shows violent crime at 0 per 100,000 residents and property crime at 222.9 per 100,000. 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
Rock Valley reported 0 violent offences in 2024 against a population of 4,038. 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.
2020–2024 direction
Across 5 comparable reporting years, the rate moved from 76.9 per 100,000 in 2020 to 0.0 in 2024 (-100.0%). The highest observed value was 121.8 in 2022 and the lowest 0.0 in 2024. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
Position in the state cohort
At 0.0 reported violent offenses per 100,000 residents in 2024, Rock Valley ranks 136 of 148 — above 0 of the 147 other Iowa cities whose 2024 submission passes this site’s completeness test. That is -100.0% 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.
Property-offense composition
Larceny-theft is 33.3% of reported property offenses in Rock Valley, against a cohort median of 76.8%. The remainder is burglary (6) and motor vehicle theft (0). Composition differences of this size usually track what kinds of places and property are present in a jurisdiction.
Comparable rate records
The nearest comparable 2024 records to Rock Valley's 0.0 violent-crime rate per 100,000 are Blue Grass (0.0), Denver (0.0), Grundy Center (0.0), Hawarden (0.0). 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 0.0% of the 9 Part I offenses reported in Rock Valley for 2024, against a median of 15.9% across comparable Iowa cities — a gap of 15.9 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 counts dominate Rock Valley'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 0 reported violent incidents in a population of 4,038. 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 4.5 Census sq mi, Rock Valley logged 2 property and 0 violent offenses per square mile in 2024.
Rock Valley's 2024 book concentrates in burglary (67% of 9 offenses; mix index 5,556).
Violent offenses are only 0% of the municipal total - a property-led book.
Rock Valley offense mix (2024)
Density uses Census Gazetteer land area (4.5 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 | 9 | 222.9 |
| Burglary | 6 | 148.6 |
| Larceny-Theft | 3 | 74.3 |
| Motor Vehicle Theft | 0 | 0 |
| Arson | 0 | 0 |
| Violent Crime | 0 | 0 |
| Murder | 0 | 0 |
| Rape | 0 | 0 |
| Robbery | 0 | 0 |
| Aggravated Assault | 0 | 0 |
Lead series · rose across 5 comparable years · FBI UCR
Secondary series · fell · 2020-2024 · FBI UCR
| Year | Coverage | Population | Violent Rate | Property Rate |
|---|---|---|---|---|
| 2020 | Comparable | 3,899 | 76.9 | 51.3 |
| 2021 | Comparable | 3,945 | 76 | 101.4 |
| 2022 | Comparable | 4,106 | 121.8 | 365.3 |
| 2023 | Comparable | 4,079 | 24.5 | 147.1 |
| 2024 | Comparable | 4,038 | 0 | 222.9 |
Rock Valley Police Department filed the 2024 UCR row behind Rock Valley's 9 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 Rock Valley in population. Their populations run from 3,688 to 4,381, against 4,038 here. Or use our side-by-side compare tool to benchmark two cities directly.
In 2024, Rock Valley reported 0 violent crimes and 9 property crimes, for a total of 9 reported offenses.
From 2023 to 2024, Rock Valley's violent crime rate decreased by 100%, and the property crime rate increased by 51.5%.
The most common crime type in Rock Valley is burglary, accounting for 66.7% of all reported crimes (6 incidents in 2024).
Small-city read: Rock Valley 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 Rock Valley's small city row is sourced and ranked.
Source: FBI Uniform Crime Reporting (UCR) Program CIUS Table 8 municipal crime rates · 2024 Rock Valley, 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. Rock Valley is scored as a small-city UCR reporter (4,038 on the row). See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.