Crime in Decatur, Illinois
Major crime in Decatur is 1.8 times the U.S. rate per resident: 2.0 times for persons crimes and 1.8 times for property crimes. Expected major crimes are down 4.4% 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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Weapons violations stand out most, at 4.8 times the U.S. rate
Expected crimes per year in Decatur 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 Decatur
The middle half of Decatur residents live in neighborhoods with a major-crime index between 58 and 262; the typical (median) resident's is 109. The citywide figure (182) is higher than that because crime concentrates in a smaller set of areas.
- 0–5022.4%
- 50–10024.0%
- 100–20023.0%
- 200–40017.3%
- 400+13.3%
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 4.4% in a year; across Illinois it fell 9.6%
Change in expected crimes, with Illinois as a whole in gray. The past year uses the reporting agencies' year-to-date FBI data; 2031 is the model's projection.
Decatur against U.S. places with 50,000 to 100,000 residents
49 of the 540 other places of this size have a higher major-crime index than Decatur; the middle of the group is 92. The 9 nearest in population:
Major-crime index per resident, U.S. = 100; residents in gray.
Decatur has a higher major-crime index than all of its 8 nearest neighbors
The 8 nearest cities and towns we cover, by major-crime index. The closest, Mount Zion (6 mi), is 82% below Decatur's rate.
Major-crime index per resident, U.S. = 100; distances between where residents live, in miles.
Questions about crime in Decatur
What are the most common crimes in Decatur?
By expected count, the most common persons and property crimes are other larceny (about 579 a year), burglary (about 359 a year) and shoplifting (about 318 a year). Compared with the U.S., weapons violations stands out most: 4.8 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. Decatur's figures add up its 76 block groups. The index compares crimes per resident with the U.S. rate.
- Decatur's published incident records inform the estimate for every neighborhood.
- 49.0% 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: 67,111. Model updated Oct 20, 2026. Release 2026-2026-10-20-2
Full method and validation·Data sources
CrimeMetric. "Crime in Decatur, Illinois." Vorp Labs, model updated Oct 20, 2026. https://crimemetric.com/il/decatur
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Major-crime index, U.S. = 100
- Mount Zion6 mi33
- Maroa11 mi32
- Clinton21 mi89
- Arthur27 mi59
- Taylorville28 mi53
- Lincoln30 mi129
- Rochester31 mi36
- Pana33 mi46