Crime in Thornton, Colorado
Major crime in Thornton is 28% above the U.S. rate per resident: 25% lower for persons crimes and 39% higher for property crimes. Expected major crimes are down 10.8% from a year earlier.
Modeled estimates per resident, not counts of incidents. How we calculated this
Index: crimes per resident compared with the U.S., where 100 is the U.S. rate and 200 is twice it.
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Rape / sexual assault stands out most, at 2.0 times the U.S. rate
Expected crimes per year in Thornton for each type, and the index against the U.S. rate per resident.
Citywide indexWhere the middle half of residents live
Property crimes
Social disorder
How crime varies across Thornton
The middle half of Thornton residents live in neighborhoods with a major-crime index between 59 and 129; the typical (median) resident's is 77. The citywide figure (128) is higher than that because crime concentrates in a smaller set of areas.
- 0–5016.0%
- 50–10050.6%
- 100–20020.5%
- 200–4004.3%
- 400+8.7%
Share of residents by the index of their census block group, a neighborhood of roughly 600 to 3,000 people.
Highest on weeknights
Major-crime index by time of week, against the U.S. rate for the same hours.
Major crime fell 10.8% in a year; across Colorado it fell 9.1%
Change in expected crimes, with Colorado as a whole in gray. The past year uses the reporting agencies' year-to-date FBI data; 2031 is the model's projection.
Thornton against U.S. places with 100,000 to 250,000 residents
100 of the 268 other places of this size have a higher major-crime index than Thornton; the middle of the group is 109. The 9 nearest in population:
Major-crime index per resident, U.S. = 100; residents in gray.
Thornton has a higher major-crime index than 4 of its 8 nearest neighbors
The 8 nearest cities and towns we cover, by major-crime index. The closest, Northglenn (2 mi), is 7% below Thornton's rate.
Major-crime index per resident, U.S. = 100; distances between where residents live, in miles.
Questions about crime in Thornton
What are the most common crimes in Thornton?
By expected count, the most common persons and property crimes are other larceny (about 1,194 a year), shoplifting (about 665 a year) and theft from vehicle (about 554 a year). Compared with the U.S., rape / sexual assault stands out most: 2.0 times the U.S. rate per resident.
How we calculated this
Each police agency's crimes, as reported to the FBI, are spread across the census block groups it serves using population, jobs, points of interest and, where available, local incident records. Thornton's figures add up its 81 block groups. The index compares crimes per resident with the U.S. rate.
- Thornton's published incident records inform the estimate for every neighborhood.
- 50.6% of residents live in block groups whose estimate has high confidence (80% interval within about 5x).
- Rates are per resident, so places where many people work or visit but few live, such as downtowns, airports and stadiums, can read high.
- Disorderly conduct and trespassing are modeled, because the FBI records them only through arrests.
- Residents: 149,426. Model updated Oct 20, 2026. Release 2026-2026-10-20-2
Full method and validation·Data sources
CrimeMetric. "Crime in Thornton, Colorado." Vorp Labs, model updated Oct 20, 2026. https://crimemetric.com/co/thornton
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Major-crime index, U.S. = 100
- Northglenn2 mi118
- Welby4 mi166
- Federal Heights5 mi145
- Derby5 mi173
- Sherrelwood5 mi115
- Westminster6 mi170
- Shaw Heights6 mi112
- Broomfield6 mi100