Year by year: incidents and arrests summed
Incident reports and arrests reported in each of the 26 years 2001 to 2026, summed from the per-type rows: 8,669,005 incident reports and 2,163,820 arrests in all.
- calendar years26
- Incident reports, all years8,669,005
- Arrests reported, all years2,163,820
The full file annual_by_type.json has 806 rows totalling 8,669,005 incidents and 2,163,820 arrests; the trends table leaves out the 13 rows for the types DOMESTIC VIOLENCE and NON-CRIMINAL (32 incidents, 10 arrests), which is why its total is 8,668,973 / 2,163,810.
One row per calendar year
This page lists every calendar year carried by the record file annual_by_type.json, with that year's incident reports and arrest reports added up over the primary types, and the share of incident reports the same records flag as resulting in an arrest.
| year | Incident reports (SUM) | Arrests reported (SUM) | Arrest reports as share of incident reports | type rows summed |
|---|---|---|---|---|
| 2001 | 485,980 | 141,955 | 29.2% | 33 |
| 2002 | 486,843 | 141,581 | 29.1% | 31 |
| 2003 | 476,013 | 141,607 | 29.7% | 31 |
| 2004 | 469,448 | 144,709 | 30.8% | 30 |
| 2005 | 453,803 | 140,929 | 31.1% | 31 |
| 2006 | 448,212 | 135,431 | 30.2% | 31 |
| 2007 | 437,117 | 131,885 | 30.2% | 30 |
| 2008 | 427,231 | 110,033 | 25.8% | 30 |
| 2009 | 392,879 | 110,857 | 28.2% | 30 |
| 2010 | 370,590 | 100,568 | 27.1% | 30 |
| 2011 | 352,083 | 96,314 | 27.4% | 30 |
| 2012 | 336,406 | 90,700 | 27.0% | 29 |
| 2013 | 307,646 | 86,582 | 28.1% | 30 |
| 2014 | 275,916 | 79,673 | 28.9% | 31 |
| 2015 | 264,951 | 70,084 | 26.5% | 32 |
| 2016 | 270,037 | 53,087 | 19.7% | 32 |
| 2017 | 269,349 | 52,710 | 19.6% | 32 |
| 2018 | 269,246 | 53,933 | 20.0% | 32 |
| 2019 | 261,943 | 56,319 | 21.5% | 32 |
| 2020 | 213,085 | 34,228 | 16.1% | 33 |
| 2021 | 210,021 | 26,677 | 12.7% | 31 |
| 2022 | 240,510 | 28,284 | 11.8% | 31 |
| 2023 | 263,871 | 32,221 | 12.2% | 31 |
| 2024 | 259,673 | 35,900 | 13.8% | 31 |
| 2025 | 238,183 | 38,451 | 16.1% | 31 |
| 2026 | 187,969 | 29,102 | 15.5% | 31 |
| All years | 8,669,005 | 2,163,820 | 25.0% | 806 |
Rule: the incidents and arrests columns are sums of the incidents and arrests columns over every primary-type row for that year in annual_by_type.json; the share is the summed arrests divided by the summed incidents, to one decimal place. Last column: how many type rows that year has.
Median across the 26 years: 291,781 incident reports and 83,128 arrests reported per year. The first year on the table is 2001 with 485,980 incident reports; the last is 2026 with 187,969.
How many primary types each year's own page lists is shown on the Years index.
Where these figures come from
Every figure on this page is summed from the record file annual_by_type.json, downloaded from the City of Chicago Open Data Portal and fetched on 2026-10-30. Source: Chicago Police Department, Crimes - 2001 to Present (dataset ijzp-q8t2) via City of Chicago Open Data Portal. Sources, licence and fetch date.
All figures are counts of incident reports submitted to the Chicago Police Department. The arrest count is the number of those reports the same records flag as resulting in an arrest. These are reports, not proven offences, and an arrest is not a conviction.