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 4, 2026.
Grundy County, Illinois, has about 54,000 residents (2024 Census Bureau estimate). A police report belongs to the agency whose officer wrote it, so which office holds a report from Grundy County depends on where the incident happened: the Grundy County Sheriff's Office for the unincorporated county, the agency that reports for the city inside a city. This guide names each agency, where its records page is and what the Illinois Freedom of Information Act requires of it.
This guide covers which agency, the sheriff's reports, the cities' reports, how many reports, what the law requires and common questions.
Related guides: Grundy County public records, Grundy County arrest records, Grundy County warrants, Grundy County inmate search, Grundy County criminal records, Illinois arrest records and Illinois inmate search.
Which Agency Holds a Report from Grundy County
The report of an incident is released by the agency that took it; the court and the jail hold their own records of the same event, but not the report.
In Grundy County that is the Grundy County Sheriff's Office for the unincorporated county and for any city that contracts with it for police service, and the agency that reports for a city where the city has one of its own.
The Braidwood Police Department, the Godley Police Department, the Channahon Police Department and two more are each listed by the FBI across several counties including Grundy County, so their arrests are not broken out for Grundy County here.
Reports from the Grundy County Sheriff's Office
The Grundy County Sheriff's Office is the county agency; it had 12 violent and 50 property crimes reported for 2025 and reported 330 arrests for 2025.
Its reports come from its records unit, reached through the office at 815-941-3243. The office's page SearchSystems verified is its jail page, at grundycountyil.gov/services/sheriff/jail.php (page title: Grundy County, IL), phone 815-941-3243, 111 E. Washington St. Morris, IL 60450, Monday thru Friday 8:00am to 4:00pm., which answered when SearchSystems opened it on October 4, 2026.
Reports from the City Agencies in Grundy County
The five cities the FBI lists in Grundy County with a reporting agency of their own, with the police records page SearchSystems verified where the city has a guide:
- Morris: 22 violent and 155 property crimes reported for 2025; 363 arrests reported for 2025. The Morris police department's page is at morrisil.org/department/police-department, phone 815-942-2131 (verified September 25, 2026).
- Minooka: 6 violent and 25 property crimes reported for 2025; 243 arrests reported for 2025.
- Coal City: 2 violent and 26 property crimes reported for 2025; 94 arrests reported for 2025. The Coal City police department's page is at coalcity-il.gov/department/police-department, phone 815-634-8533 (verified September 26, 2026).
- Diamond: 0 violent and 6 property crimes reported for 2025; 0 arrests reported for 2025.
- Mazon: 0 violent and 0 property crimes reported for 2025; 0 arrests reported for 2025.
A city on that list is reported separately whether the officers are the city's own or the sheriff's under contract; the FBI's list does not say which.
How Many Reports: Grundy County in 2025
The six agencies in Grundy County with all twelve months of 2025 on file reported 42 violent and 262 property crimes to the FBI that year, each one a report taken by the agency that holds it.
Together, the six agencies in Grundy County with all twelve months of 2025 on file reported 1,030 arrests to the FBI that year, and each arrest is a report of its own.
What the Illinois Freedom of Information Act Requires
The Illinois Freedom of Information Act sets the rules: an answer within 5 business days, with one 5-day extension, at a charge of copying only after the first 50 pages, from the agency that holds the report.
Any other county record goes through the county records request page SearchSystems verified, at grundycountyil.gov/services/circuit_court_clerk/copy_requests.php (page title: Grundy County, IL).
A defendant who has been charged gets the report through the case: the State's Attorney, (815) 941-3276, handles discovery for pending cases.
Frequently Asked Questions
How do I get a police report in Grundy County?
From the agency whose officer took it: the Grundy County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Illinois Freedom of Information Act the answer is due within 5 business days, with one 5-day extension.
How long does an agency in Grundy County have to answer?
Under the Illinois Freedom of Information Act, within 5 business days, with one 5-day extension. It may charge copying only after the first 50 pages.
How do I get a report from the Grundy County Sheriff's Office?
From its records unit, reached through the office at 815-941-3243. Under the Illinois Freedom of Information Act the answer is due within 5 business days, with one 5-day extension.
Is this the official Grundy 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.