Groton, CT has a A safety grade (75/100) with a violent crime rate of 194 per 100,000, 45% below the national average.
FBI UCR 2024 · per-capita rates · small city
Groton is a small municipal reporter (9,282 on the UCR row). Per-100,000 violent and property rates are shown with CT and U.S. context.
Data updated 2026-08-24
Groton, CT carries a PlainCrime A safety grade with violent crime 45% below the U.S. average
According to the FBI Uniform Crime Reporting (UCR) Program for 2024, Groton, CT shows violent crime at 193.9 per 100,000 residents and property crime at 678.7 per 100,000. Violent crime runs 45% 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
Groton reported 18 violent offences in 2024 against a population of 9,282. 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.
Position in the state cohort
At 193.9 reported violent offenses per 100,000 residents in 2024, Groton ranks 11 of 94 — above 83 of the 93 other Connecticut cities whose 2024 submission passes this site’s completeness test. That is +233.6% against the cohort median of 58.1. 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 Groton's 193.9 violent-crime rate per 100,000 are New London (201.1), Norwich (205.9), Willimantic (174.0), Enfield (162.3). 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 22.2% of the 81 Part I offenses reported in Groton for 2024, against a median of 4.7% across comparable Connecticut cities — a gap of 17.5 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.
2020–2024 direction
Across 5 comparable reporting years, the rate moved from 259.6 per 100,000 in 2020 to 193.9 in 2024 (-25.3%). The highest observed value was 259.6 in 2020 and the lowest 182.0 in 2023. Years whose submission failed the completeness test are left out of this comparison rather than plotted as change.
Property counts dominate Groton'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 18 reported violent incidents in a population of 9,282. 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 3.1 Census sq mi, Groton logged 20.4 property and 5.8 violent offenses per square mile in 2024.
Groton leans on larceny-theft at 54% of reported offenses, with a moderate mix index of 3,560.
Violent offenses are 22% of the municipal total; property offenses still dominate the count.
Groton offense mix (2024)
Density uses Census Gazetteer land area (3.1 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 | 63 | 678.7 |
| Larceny-Theft | 44 | 474 |
| Motor Vehicle Theft | 13 | 140.1 |
| Burglary | 6 | 64.6 |
| Arson | 1 | 10.8 |
| Violent Crime | 18 | 193.9 |
| Aggravated Assault | 13 | 140.1 |
| Rape | 5 | 53.9 |
| Murder | 0 | 0 |
| Robbery | 0 | 0 |
Lead series · fell across 5 comparable years · FBI UCR
Secondary series · fell · 2020-2024 · FBI UCR
| Year | Coverage | Population | Violent Rate | Property Rate |
|---|---|---|---|---|
| 2020 | Comparable | 8,861 | 259.6 | 1049.5 |
| 2021 | Comparable | 8,823 | 238 | 895.4 |
| 2022 | Comparable | 9,323 | 214.5 | 825.9 |
| 2023 | Comparable | 9,343 | 182 | 642.2 |
| 2024 | Comparable | 9,282 | 193.9 | 678.7 |
Groton Police Department filed the 2024 UCR row behind Groton's 81 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 Connecticut cities closest to Groton in population. Their populations run from 8,057 to 10,353, against 9,282 here. Or use our side-by-side compare tool to benchmark two cities directly.
Groton sits at 193.9/100K violent (grade A); the Connecticut cities below are the nearest matches after size peers are removed.
In 2024, Groton reported 18 violent crimes and 63 property crimes, for a total of 81 reported offenses.
From 2023 to 2024, Groton's violent crime rate increased by 6.5%, and the property crime rate increased by 5.7%.
The most common crime type in Groton is larceny-theft, accounting for 54.3% of all reported crimes (44 incidents in 2024).
Small-city read: Groton 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 Groton's small city row is sourced and ranked.
Source: FBI Uniform Crime Reporting (UCR) Program CIUS Table 8 municipal crime rates · 2024 Groton, CT 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. Groton is scored as a small-city UCR reporter (9,282 on the row). See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.