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 on September 23, 2026.
Kendall County, Illinois, has about 143,000 residents (2024 Census Bureau estimate). A police report belongs to the agency whose officer wrote it, so which office holds a report from Kendall County depends on where the incident happened: the Kendall 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: Kendall County public records, Kendall County arrest records, Kendall County warrants, Kendall County inmate search, Kendall County criminal records, Illinois arrest records and Illinois inmate search.
Which Agency Holds a Report from Kendall County
A crime, incident or collision report belongs to the agency whose officer wrote it, and that agency releases it, not the court, the jail or the prosecutor.
In Kendall County that is the Kendall 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 Joliet Police Department, the Plainfield Police Department, the Sandwich Police Department and two more are each listed by the FBI across several counties including Kendall County, so their arrests are not broken out for Kendall County here.
Reports from the Kendall County Sheriff's Office
The Kendall County Sheriff's Office is the county agency; it had 41 violent and 126 property crimes reported for 2025 and reported 335 arrests for 2025.
Its reports come from its records unit. The office's page SearchSystems verified is its jail page, at kendallcountyil.gov/offices/sheriff/corrections (page title: Corrections Division | Kendall County, IL), which answered when SearchSystems opened it on September 23, 2026.
Reports from the City Agencies in Kendall County
The four cities the FBI lists in Kendall County with a reporting agency of their own, with the police records page SearchSystems verified where the city has a guide:
- Oswego: 28 violent and 172 property crimes reported for 2025; 329 arrests reported for 2025. The Oswego police department's page is at oswegoil.org/government/police, phone 630-554-3426 (verified September 25, 2026).
- Yorkville: 23 violent and 125 property crimes reported for 2025; 251 arrests reported for 2025.
- Montgomery: 34 violent and 271 property crimes reported for 2025; 220 arrests reported for 2025.
- Plano: 6 violent and 61 property crimes reported for 2025; 0 arrests reported for 2025. The Plano police department's page is at cityofplanoil.com/m/directory/department?did=5, phone 630-552-3122 (verified September 25, 2026).
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: Kendall County in 2025
The five agencies in Kendall County with all twelve months of 2025 on file reported 132 violent and 755 property crimes to the FBI that year, each one a report taken by the agency that holds it.
Together, the five agencies in Kendall County with all twelve months of 2025 on file reported 1,135 arrests to the FBI that year, and each arrest is a report of its own.
What the Illinois Freedom of Information Act Requires
Under the Illinois Freedom of Information Act the agency 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 request goes to the agency that holds the report, in writing, and does not have to say why the report is wanted.
Any other county record goes through the county records request page SearchSystems verified, at kendallcountyil.govqa.us/WEBAPP/_rs/(S(ja4m2xhguqvbfnn2wkhgeh00))/s... (page title: KENDALL COUNTY ILLINOIS PUBLIC RECORDS CENTER).
A defendant who has been charged gets the report through the case: the State's Attorney, 630-553-4157, handles discovery for pending cases.
Frequently Asked Questions
How do I get a police report in Kendall County?
From the agency whose officer took it: the Kendall 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 Kendall 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 Kendall County Sheriff's Office?
From its records unit. Under the Illinois Freedom of Information Act the answer is due within 5 business days, with one 5-day extension.
Is this the official Kendall 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.