Reviewed and updated October 11, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and October 11, 2026.
Rock Island County, Illinois, has about 143,000 residents (2024 Census Bureau estimate). A DUI arrest in Rock Island County starts two cases, a criminal case in the Circuit Court of Rock Island County and a license case before the Secretary of State, and leaves three records. This guide follows the arrest from the roadside to the court file and the driving record.
This guide covers the law, the arrest, booking, the court case, the license case, the records and common questions.
Related guides: Rock Island County public records, Rock Island County arrest records, Rock Island County warrants, Rock Island County inmate search, Rock Island County criminal records, Illinois arrest records and Illinois inmate search.
The DUI Law in Illinois
In Illinois the offense is DUI, and the limit is 0.08.
Driving in Illinois is consent to a breath or blood test when an officer has cause to suspect DUI; the license case that follows a refusal or a failed test is run by the Secretary of State, separately from the criminal case.
Illinois sets no time limit on prior offenses: every earlier conviction counts toward a repeat charge.
Who Makes DUI Arrests in Rock Island County
The Rock Island County Sheriff's Office and the agencies that report for Moline, Rock Island, East Moline, Silvis, Milan, Coal Valley and one more cities make the DUI arrests in Rock Island County.
The FBI's agency list also places one more agency in Rock Island County: Black Hawk College at Moline (campus police).
Together, the seven agencies in Rock Island County with all twelve months of 2025 on file reported 3,019 arrests to the FBI that year, all offenses together; the FBI's count for Rock Island County does not break DUI out.
Booking After a DUI Arrest in Rock Island County
A driver arrested for DUI and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Rock Island County Sheriff's Office, held about 190 people on an average day in 2023 by the Vera Institute of Justice's count and has a jail page SearchSystems verified at rockislandcountyil.gov/318/Sheriffs-Office, phone 309-558-3432. The Rock Island County inmate search guide covers the jail in full.
The Court Case
The State's Attorney files the charge, and the case is heard in the Circuit Court of Rock Island County.
The State's Attorney's page SearchSystems verified is at rockislandcountyil.gov/309/States-Attorney, phone 309-558-3240.
The court records page SearchSystems verified for the county is at rockislandcountyil.gov/189/Circuit-Clerk, phone 309-558-3538.
Illinois has no single public index of every trial court case; each court's records are looked up through that court.
The License Case
The court case is only half the record. The Secretary of State runs a separate administrative case over the license, which can suspend it before the criminal case is decided, and the Illinois Secretary of State keeps the driving record the conviction goes on.
The Records a DUI Leaves
- The arrest report: from the agency that made the arrest, under the Illinois Freedom of Information Act.
- The court file: from the Circuit Court of Rock Island County, kept by the Circuit Clerk.
- The driving record: from the Illinois Secretary of State.
More on each: Rock Island County arrest records, Rock Island County police reports and Rock Island County court records.
Frequently Asked Questions
What is the DUI limit in Illinois?
0.08 percent blood alcohol.
Where is a DUI case from Rock Island County heard?
In the Circuit Court of Rock Island County, brought by the State's Attorney. The court records page SearchSystems verified for the county is at rockislandcountyil.gov/189/Circuit-Clerk.
Where is a person arrested for DUI in Rock Island County held?
At the county jail, run by the Rock Island County Sheriff's Office, if kept in custody.
Who handles the license after a DUI arrest in Illinois?
The Secretary of State, in an administrative case separate from the court case.
How long does a DUI count as a prior in Illinois?
There is no time limit; every prior conviction counts.
Is this the official Rock Island County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.