DuPage County
934,298 people, served by 42 police agencies that report to the FBI. Below: how a case moves here, from arrest to court.
How a case moves here
DuPage County follows Illinois law on arrests, release, and courts. These rules are the same in every county in the state; the full set covers prosecutors, defense, and jails too.
- Who decides release first
Illinois has no money bail. Police may release a person charged with an offense for which release can't be denied, without a judge. Anyone charged with an offense for which the state can seek detention goes before a circuit or associate judge.
725 ILCS 5/109-1- Time to see a judge
A person arrested and not released must be taken before a judge without unnecessary delay and within 48 hours, and a charge must be filed.
725 ILCS 5/109-1(a)- Money bail
Illinois abolished money bail under the Pretrial Fairness Act, which took effect September 18, 2023. Judges release people on conditions or, after a hearing on a state petition, order them detained.
725 ILCS 5/110-1.5- Courts
Illinois has one trial court, the circuit court, which hears every felony and misdemeanor. There are no city, county, or justice courts.
Ill. Const. art. VI, secs. 1, 9- Judges and magistrates
Circuit judges are nominated in party primaries or by petition and elected to six-year terms, then run in retention elections to stay. Circuit judges appoint associate judges to four-year terms. Every judge must be a licensed Illinois lawyer.
Ill. Const. art. VI, secs. 8, 10, 11, 12
Read from the statutes and court rules cited, 2026-09-30. 725 ILCS 5/110-1.5 states January 1, 2023, but the Illinois Supreme Court stayed the law until September 18, 2023 (Rowe v. Raoul); the stay is from general knowledge, not a source read here. Retention needs three-fifths of votes cast; not re-read. How small counties without a public defender office provide lawyers was not confirmed county by county.
What this county does differently
- Pretrial practice
The Office of Statewide Pretrial Services lists this county as one it does not serve, and Mapping Pretrial Injustice listed its risk tool in 2021 as the Virginia Pretrial Risk Assessment Instrument (VPRAI).
Illinois Office of Statewide Pretrial Services, Pretrial Services Directory (read 2026-09-30)MediaJustice and Movement Alliance Project, Mapping Pretrial Injustice county map (data as of fall 2021)From Mapping Pretrial Injustice, a map compiled by MediaJustice and the Movement Alliance Project, advocacy groups that campaign against pretrial risk assessment tools. Its data is from fall 2021; CrimeDB uses it only where no court, government, or research list covers the county.
Police agencies
- Aurora Police DepartmentCity180,824 served
- Naperville Police DepartmentCity154,062 served
- DuPage County Sheriff's OfficeCounty97,926 served
- Bolingbrook Police DepartmentBolingbrook village74,990 served
- Wheaton Police DepartmentWheaton city53,702 served
- Downers Grove Police DepartmentCity50,647 served
- Elmhurst Police DepartmentElmhurst city46,205 served
- Lombard Police DepartmentLombard village44,509 served
- Bartlett Police DepartmentBartlett village40,644 served
- Carol Stream Police DepartmentCarol Stream village39,506 served
- Hanover Park Police DepartmentCity36,523 served
- Addison Police DepartmentCity35,753 served
- Woodridge Police DepartmentWoodridge village34,100 served
- St. Charles Police DepartmentCity33,584 served
- Glendale Heights Police DepartmentCity32,808 served
- Glen Ellyn Police DepartmentGlen Ellyn village28,855 served
- West Chicago Police DepartmentWest Chicago city25,446 served
- Westmont Police DepartmentWestmont village24,282 served
- Lisle Police DepartmentCity23,520 served
- Roselle Police DepartmentRoselle village22,859 served
- Bloomingdale Police DepartmentCity22,690 served
- Darien Police DepartmentDarien city22,020 served
- Villa Park Police DepartmentVilla Park village21,974 served
- Bensenville Police DepartmentCity18,594 served
- Lemont Police DepartmentCity18,306 served
- Hinsdale Police DepartmentCity17,656 served
- Warrenville Police DepartmentCity15,685 served
- Wood Dale Police DepartmentWood Dale city13,971 served
- Burr Ridge Police DepartmentBurr Ridge village11,208 served
- Winfield Police DepartmentCity10,300 served
- Itasca Police DepartmentItasca village9,497 served
- Willowbrook Police DepartmentWillowbrook village9,169 served
- Clarendon Hills Police DepartmentClarendon Hills village8,707 served
- Oak Brook Police DepartmentOak Brook village8,198 served
- Oakbrook Terrace Police DepartmentCity2,725 served
- Wayne Police DepartmentCity2,286 served
- Benedictine University: LisleUniversity or College
- College of DuPageUniversity or College
- DuPage County Forest PreserveOther
- IL0223200Other
- IL0224200Other
- Naperville Park DistrictOther
Agencies: FBI NIBRS master file 2025 batch headers; names from the FBI agency list, pulled 2026-09-29. An agency that serves several counties appears on each. Population served is the FBI's figure.
Crime and arrests
No figures yet