Crime Grade · FBI UCR Data · 2025
Groton, CT Crime Grade
How Groton grades for violent crime against every other reporting U.S. city — and against the rest of Connecticut — based on the FBI's Uniform Crime Reporting data.
National
4/10
vs. all U.S. cities ≥ 25,000 population
Connecticut
9/10
vs. Connecticut cities ≥ 10,000 population
In 2025, the violent crime rate in Groton, CT was 106.0 per 100,000 residents (11 incidents over a population of 10,378). That puts Groton 67% below the U.S. rate of 325.3 and 2% below the Connecticut statewide rate of 108.0.
That ranks Groton #1,193 of 3,771 ranked U.S. cities, safer than 68% of them, and #71 of 86 in Connecticut. Violent crime is down 51% year over year and down 55% over the last five years.
Groton, CT crime — key facts
- National Crime Grade
- B (4/10)
- Connecticut Grade
- F (9/10)
- Violent crime rate
- 106.0 / 100k
- National rank
- #1,193 of 3,771
- CT rank
- #71 of 86
- Safer than
- 68% of U.S. cities
- Year over year
- down 51%
- 5-year change
- down 55%
- Population
- 10,378
- Reporting agency
- Groton Police Department
- Data year
- 2025 · FBI UCR
Reported by Groton Police Department (FBI ORI CT0005900) to the FBI Uniform Crime Reporting Program. Download the full dataset (CSV) · methodology.
About Groton, CT
Also known as
- Groton Ferry
- Groton Bank
- East Side
- Groton Landing
Name history sourced from the USGS Geographic Names Information System (GNIS) — public-domain federal geographic-names data.
Violent crime rate, 5-year trend
Per 100,000 residents. Groton (red), Connecticut (blue), U.S. average (gray dashed).
Groton vs. U.S., 2025 — by offense
Rates per 100,000 residents for each offense category.
Full data, last 5 years
Rates per 100,000 residents. Raw counts in parentheses.
| Offense | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Violent crime | 238.0(21) | 214.5(20) | 182.0(17) | 215.5(20) | 106.0(11) |
| Murder | 0.0(0) | 0.0(0) | 0.0(0) | 0.0(0) | 9.6(1) |
| Rape | 79.3(7) | 75.1(7) | 42.8(4) | 53.9(5) | 38.5(4) |
| Robbery | 0.0(0) | 32.2(3) | 21.4(2) | 0.0(0) | 0.0(0) |
| Aggravated assault | 158.7(14) | 107.3(10) | 117.7(11) | 161.6(15) | 57.8(6) |
| Property crime | 895.4(79) | 825.9(77) | 642.2(60) | 732.6(68) | 501.1(52) |
| Burglary | 158.7(14) | 118.0(11) | 64.2(6) | 75.4(7) | 106.0(11) |
| Larceny | 600.7(53) | 600.7(56) | 513.8(48) | 506.4(47) | 289.1(30) |
| Motor vehicle theft | 136.0(12) | 107.3(10) | 64.2(6) | 140.1(13) | 96.4(10) |
How the Crime Grade is calculated
- What is the source of the Groton, CT Crime Grade?
- FBI Uniform Crime Reporting via the Crime Data Explorer. Agency-level data, pulled directly. No third-party aggregators, no proprietary score.
- What metric does the Groton Crime Grade use?
- Violent crime rate per 100,000 residents (murder + rape + robbery + aggravated assault), most recent fully-reported year.
- How is the national decile for Groton calculated?
- Groton's rate placed against all FBI-reporting U.S. cities with population ≥ 25,000. 1 = safest.
- How is the Connecticut state decile calculated?
- Same calculation restricted to Connecticut cities with population ≥ 10,000.
- How do decile scores convert to a letter grade?
- 1–3 = A · 4–5 = B · 6–7 = C · 8 = D · 9–10 = F.
- How often is the Groton Crime Grade refreshed?
- Twice a year. The FBI typically releases the prior year's full data each September.
- What are the limits of this Crime Grade?
- The FBI relies on local agency reporting. Rates reflect what was reported, not what occurred.
Nearby cities in Connecticut
Comparable Connecticut cities by population.
Compare Groton to other places
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