Crime Grade · FBI UCR Data · 2025
Lemont, IL Crime Grade
How Lemont grades for violent crime against every other reporting U.S. city — and against the rest of Illinois — based on the FBI's Uniform Crime Reporting data.
National
2/10
vs. all U.S. cities ≥ 25,000 population
Illinois
3/10
vs. Illinois cities ≥ 10,000 population
In 2025, the violent crime rate in Lemont, IL was 54.6 per 100,000 residents (10 incidents over a population of 18,306). That puts Lemont 83% below the U.S. rate of 325.3 and 78% below the Illinois statewide rate of 245.7.
That ranks Lemont #566 of 3,771 ranked U.S. cities, safer than 85% of them, and #50 of 214 in Illinois. Violent crime is up 37% year over year and down 13% over the last five years.
Lemont, IL crime — key facts
- National Crime Grade
- A (2/10)
- Illinois Grade
- A (3/10)
- Violent crime rate
- 54.6 / 100k
- National rank
- #566 of 3,771
- IL rank
- #50 of 214
- Safer than
- 85% of U.S. cities
- Year over year
- up 37%
- 5-year change
- down 13%
- Population
- 18,306
- Reporting agency
- Lemont Police Department
- Data year
- 2025 · FBI UCR
Reported by Lemont Police Department (FBI ORI IL0166000) to the FBI Uniform Crime Reporting Program. Download the full dataset (CSV) · methodology.
About Lemont, IL
Also known as
- Palmyra
- Keepatau
- Yankee Settlement
- Athens
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. Lemont (red), Illinois (blue), U.S. average (gray dashed).
Lemont 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 | 63.0(11) | 51.7(9) | 85.9(15) | 40.0(7) | 54.6(10) |
| Murder | 0.0(0) | 0.0(0) | 0.0(0) | 5.7(1) | 0.0(0) |
| Rape | 45.8(8) | 11.5(2) | 40.1(7) | 22.8(4) | 16.4(3) |
| Robbery | 0.0(0) | 0.0(0) | 5.7(1) | 0.0(0) | 0.0(0) |
| Aggravated assault | 17.2(3) | 40.2(7) | 40.1(7) | 11.4(2) | 38.2(7) |
| Property crime | — | — | — | — | — |
| Burglary | — | — | — | — | — |
| Larceny | — | — | — | — | — |
| Motor vehicle theft | — | — | — | — | — |
How the Crime Grade is calculated
- What is the source of the Lemont, IL 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 Lemont 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 Lemont calculated?
- Lemont's rate placed against all FBI-reporting U.S. cities with population ≥ 25,000. 1 = safest.
- How is the Illinois state decile calculated?
- Same calculation restricted to Illinois 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 Lemont 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 Illinois
Comparable Illinois cities by population.
Compare Lemont to other places
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