Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
Sycamore, Illinois, in DeKalb County, has about 19,000 residents (2024 Census Bureau estimate). In Illinois the public criminal record is the court file, kept by the Circuit Clerk; the statewide criminal history kept by the Illinois State Police is open to anyone who asks. This guide says where each record of a criminal case from Sycamore is kept and how it is seen.
This guide covers the court file, the statewide record, local arrest records, the crimes behind the records, the prosecutor, sex offender registry, records requests and common questions.
Related guides: Sycamore public records, DeKalb County criminal records, Sycamore arrest records, Sycamore warrants, Sycamore inmate search, Sycamore court records, Illinois arrest records and Illinois inmate search.
Criminal Cases in the Circuit Court of DeKalb County
A criminal case from Sycamore is filed in the Circuit Court of DeKalb County, and the court file, kept by the Circuit Clerk, is the record of it that the public may see.
For DeKalb County, SearchSystems opened and checked the court records page for the county at dekalbgastatecourt.gov (page title: DeKalb County State Court), which answered when SearchSystems opened it on September 23, 2026.
Illinois has no single public index of every trial court case; each court's records are looked up through that court.
The Illinois Criminal History and Your Own Copy
Illinois is one of the states that lets anyone look up another person's statewide criminal history: conviction information is public under the Uniform Conviction Information Act, through the Illinois State Police. The result is the repository record, what agencies reported to the state, which is wider than one county's court index but can lag it.
To see your own record, the route is a name-based or fingerprint-based request to the Illinois State Police. The state page SearchSystems verified for it is at isp.illinois.gov/BureauOfIdentification/MyRecord.
Arrest Records Kept Locally in Sycamore
The DeKalb County Sheriff's Office and the agency that reports for Sycamore (filed by the FBI as Sycamore Police Department) keep the arrest records in and around Sycamore: the report and the booking record of each arrest stay with the agency that made it, separate from the court file and from the state repository.
The FBI's agency list also places one more agency in DeKalb County: Northern Illinois University (campus police); it keeps the records of its own arrests.
The Maple Park Police Department is listed by the FBI across two counties including DeKalb County, so its arrests are not broken out for DeKalb County here.
Together, the nine agencies in DeKalb County with all twelve months of 2025 on file reported 2,362 arrests to the FBI that year; how each case ended is in the court file, not in the arresting agency's.
The agencies and their counts, year by year, are in Sycamore arrest records.
The Crimes Behind the Records: Sycamore in 2025
The agency that reports for Sycamore had 9 violent and 157 property crimes reported for 2025; each one is a report on file with it, and each arrest that follows is the start of a criminal record.
The State's Attorney for DeKalb County
The State's Attorney decides which arrests in DeKalb County become charges and files them in the Circuit Court of DeKalb County; the office answers questions about pending prosecutions, and the case files themselves are court records.
The office's page SearchSystems verified is at dekalbcounty.org/departments/states-attorneys-office (page title: State's Attorney's Office), phone 815-895-7164, 133 West State Street Sycamore, IL 60178, which answered when SearchSystems opened it on September 23, 2026.
The Sex Offender Registry for Sycamore
Registered sex offenders living in Sycamore are listed on the Illinois Sex Offender Registry, run by the Illinois State Police at illinois.gov. The registry is public and can be searched online.
Registration itself is done in person with the local agency where the registrant lives: the sheriff's office, or the city police in a city with its own department.
Asking an Agency in DeKalb County for a Record
An arrest report, a booking record or a local criminal history letter comes from the agency that holds it, not from the court.
Under the Illinois Freedom of Information Act a county office must answer a request within 5 business days, with one 5-day extension, and it may charge copying only after the first 50 pages. The county records request page SearchSystems verified is at dekalbcounty.org/services/forms-publications/freedom-of-information... (page title: Request for Public Records -- Freedom of Information Act (FOIA)).
Frequently Asked Questions
Are criminal records public in Sycamore?
The court files of criminal cases are public, and so is the statewide criminal history kept by the Illinois State Police: conviction information is public under the Uniform Conviction Information Act. The arrest report itself is released by the agency that made the arrest, under the Illinois Freedom of Information Act.
Can I search Sycamore criminal cases online?
The court records page SearchSystems verified for the county is at dekalbgastatecourt.gov (page title: DeKalb County State Court).
How do I get my own Illinois criminal history?
Through a name-based or fingerprint-based request to the Illinois State Police.
Who prosecutes crimes in Sycamore?
The State's Attorney, reached at 815-895-7164, which files its cases in the Circuit Court of DeKalb County.
Is this the official Sycamore website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.