Crime in Arnold, Missouri
Major crime in Arnold is 53% below the U.S. rate per resident: 73% lower for persons crimes and 48% lower for property crimes. Expected major crimes are down 7.7% 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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Every crime type in Arnold is near or below the U.S. rate
Expected crimes per year in Arnold 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 Arnold
The middle half of Arnold residents live in neighborhoods with a major-crime index between 24 and 41; the typical (median) resident's is 24. The citywide figure (47) is higher than that because crime concentrates in a smaller set of areas.
- 0–5085.8%
- 50–1008.6%
- 100–2000.0%
- 200–4005.7%
- 400+0.0%
Share of residents by the index of their census block group, a neighborhood of roughly 600 to 3,000 people.
Highest on weekend daytimes
Major-crime index by time of week, against the U.S. rate for the same hours.
Major crime fell 7.7% in a year; across Missouri it fell 11.3%
Change in expected crimes, with Missouri as a whole in gray. The past year uses the reporting agencies' year-to-date FBI data; 2031 is the model's projection.
Arnold against U.S. places with 10,000 to 25,000 residents
1,562 of the 2,149 other places of this size have a higher major-crime index than Arnold; the middle of the group is 72. The 9 nearest in population:
Major-crime index per resident, U.S. = 100; residents in gray.
Arnold has a higher major-crime index than 1 of its 8 nearest neighbors
The 8 nearest cities and towns we cover, by major-crime index. The closest, Oakville (3 mi), is 12% above Arnold's rate.
Major-crime index per resident, U.S. = 100; distances between where residents live, in miles.
Questions about crime in Arnold
What are the most common crimes in Arnold?
By expected count, the most common persons and property crimes are other larceny (about 69 a year), shoplifting (about 43 a year) and theft from vehicle (about 14 a year). Compared with the U.S., other larceny stands out most: 30% below 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. Arnold's figures add up its 12 block groups. The index compares crimes per resident with the U.S. rate.
- Arnold has no published incident records in our data, so its estimate relies on agency totals and neighborhood characteristics.
- 0.0% 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: 19,532. Model updated Oct 20, 2026. Release 2026-2026-10-20-2
Full method and validation·Data sources
CrimeMetric. "Crime in Arnold, Missouri." Vorp Labs, model updated Oct 20, 2026. https://crimemetric.com/mo/arnold
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Major-crime index, U.S. = 100
- Oakville3 mi53
- Imperial4 mi67
- Concord6 mi121
- Mehlville6 mi106
- Sappington7 mi127
- Sunset Hills7 mi83
- Murphy7 mi60
- Barnhart7 mi33