In 2025, Thornton police reported 371 violent crimes (251 per 100,000 residents), including 2 murders, 48 robberies and 217 aggravated assaults, plus 3,350 property crimes, according to FBI data.
Population covered: 147,837. Violent-crime rate rank: 12 of 13 large Colorado cities on this site (1 = highest rate). Source: FBI Crime Data Explorer, agency CO0010400, January–December 2025.
| City | Violent / 100k | Violent | Murders | Property / 100k | Map |
|---|---|---|---|---|---|
| Pueblo | 1,177 | 1,306 | 11 | 4,296 | Totals |
| Denver | 881 | 6,463 | 44 | 4,119 | Totals |
| Aurora | 763 | 3,108 | 36 | 2,462 | Totals |
| Colorado Springs | 690 | 3,428 | 25 | 3,002 | Live |
| Lakewood | 675 | 1,060 | 8 | 4,494 | Totals |
| Greeley | 630 | 729 | 10 | 2,887 | Totals |
| Boulder | 354 | 377 | 3 | 2,411 | Live |
| Longmont | 350 | 350 | 1 | 2,413 | Totals |
| Arvada | 307 | 372 | 7 | 2,289 | Totals |
| Fort Collins | 289 | 494 | 4 | 1,751 | Totals |
| Westminster | 288 | 331 | 5 | 2,905 | Totals |
| Thornton | 251 | 371 | 2 | 2,266 | Totals |
| Centennial | 192 | 209 | 1 | 1,410 | Totals |
Source: FBI Crime Data Explorer agency counts for 2025 (all 12 months reported unless noted), retrieved October 7, 2026. Rates use the population the FBI lists for each police agency.
Thornton's violent-crime rate of 251 per 100,000 people in 2025 was 42% lower than the Colorado rate (434) and 22% lower than the U.S. rate (320). That works out to one reported violent crime for every 398 residents, or about 7.1 a week.
Among the 362 cities with full-year FBI numbers on CityCrimeMap, Thornton ranks 266th for violent crime, in the lower half, and 282nd for murder (2 murders, 1.4 per 100,000).
Aggravated assaults made up 58% of Thornton's violent crimes and robberies 13%, close to the national robbery share of 15%.
Property crime ran 2,266 per 100,000, about even with Colorado overall. Thornton police logged 592 vehicle thefts (400 per 100,000, 89th of 351; Colorado: 312) and 244 burglaries (165 per 100,000, 42% lower than the state).
The closest city we cover is Westminster, 7 miles southwest; its violent-crime rate (288) is 15% higher than Thornton's.
Out-of-state cities near Thornton's size (147,837 residents): Palm Bay, FL at 275 violent crimes per 100,000 and Waco, TX at 414.
By the FBI's 2025 numbers, Thornton had 251 violent crimes per 100,000 residents, 42% lower than the statewide 434. It is 12th highest of the 13 Colorado cities on this site; Pueblo is highest at 1,177. A city-wide rate does not tell you about a single block.
Thornton police reported 2 murders for 2025, a rate of 1.4 per 100,000 residents. The Colorado rate was 3.9 and the national rate 4.1.
592 vehicles were reported stolen in Thornton in 2025, 400 per 100,000 residents. That is 2.1 times the national rate of 195 and ranks 89th of 351 cities on this site.