Search the Kendall County Inmate Population

The Kendall County Inmate Population

The Kendall County inmate population sits inside a single building. The Kendall County Jail at 1102 Cornell Lane in Yorkville is the only detention facility in the county, and the Sheriff's Office runs it. The jail holds people awaiting trial, people serving sentences of up to one year, and people assigned to periodic imprisonment. That mix matters. The county count is mostly a pre-trial count, not a list of sentenced felons. Once a Kendall County defendant is sentenced to state prison, that person leaves the county number and joins the Illinois Department of Corrections count instead.

Two state bodies make the numbers public. The Sheriff publishes annual figures, and the Illinois Department of Corrections inspects the jail every year and posts a compliance report. The result is a well documented population. The average daily count, the rated capacity, and the yearly booking total are all on the record. The figures move with arrests, bond hearings, sentencing, and transfers, so a count taken on one date will not match the count taken a month later.

Kendall County Inmate Population Statistics

The headline numbers come from three sources: the Sheriff's annual reports release, the Illinois Department of Corrections compliance report, and the jail's federal PREA audit. The jail is rated for 107 beds. It booked roughly 2,406 people during 2023 and held an average of 81 on a typical day that year. The county itself is large and growing, with about 143,171 residents in the 2024 census estimate, so the jail serves a sizable population from one facility.

The booking total tells a story the daily count hides. A jail can average 81 people on a given day yet process thousands across a full year, because most detainees stay a short time and then post release, transfer, or resolve their case. The Sheriff's annual reports page carries the source figures.

Kendall County Inmate Population Trends

Capacity has been stable for two decades, but the daily population reading depends on when it was taken. The jail opened in 1992 with 60 beds. Renovations finished in 2000 and 2005 raised capacity to 107, where it remains. Against that fixed ceiling, recent counts have run well below the cap. The 2023 average was around 80, while a single point-in-time inspection in June 2024 found just 51 people in custody.

The two 2023 figures, 81 and 84, are close but not identical because they cover different measurement windows. Neither one conflicts with the lower June 2024 reading. A jail count moves every day, so a single inspection date is a snapshot, not an average.

Who Makes Up the Kendall County Inmate Population

The jail's own description is the best guide to who is held. It houses three groups: people awaiting trial, people serving sentences up to one year, and people on periodic imprisonment. The 2023 PREA audit adds detail. It lists an adult population, an age range of 18 to 80, custody levels from minimum to maximum, and no youthful inmates. On the June 2024 inspection date, all 51 people in custody were male, and the 2024 report listed the rated beds as male capacity.

• Pre-trial vs sentenced - the count is mostly pre-trial, with a smaller share serving short county sentences or periodic imprisonment.
• Male vs female - the 2024 inspection recorded all male detainees on that date and no female population.
• Custody levels - the audit lists minimum through maximum security, with an age range of 18 to 80.
• Held for other agencies - some records carry a "hold for other agency" status, meaning another authority controls the release.

A few terms come up over and over when people read the count. Knowing them makes the roster easier to read.

Pre-trial

Held before a case is decided, not yet convicted of the charge.

Periodic imprisonment

A sentence served in parts, such as nights or weekends, while the person keeps a job or other duties.

Hold for other agency

The person is kept because another court or agency has authority or a pending pickup.

Average daily population

The mean number of people in custody across a stated period, not a single day's count.

Kendall County Jail Capacity and Overcrowding

Overcrowding is not the story here. The 2023 PREA audit states plainly that the facility was not over capacity at any point in the prior twelve months. With a rated capacity of 107 and an average daily population in the low 80s, the jail ran at roughly three quarters of its beds in 2023. The June 2024 inspection count of 51 was lower still, near half of capacity on that date.

No litigation, consent decree, or closure tied to crowding turned up in official sources. The county has grown fast, from about 114,736 residents in 2010 to roughly 143,171 in 2024, yet the jail population has stayed within the building's limits. That gives the Sheriff room to manage classification, separation, and special housing without the pressure a packed jail would create.

Laws Governing the Kendall County Inmate Population

Several Illinois statutes shape who is counted, how the data is kept, and what the public can see. The County Jail Act makes the sheriff the warden of the county jail and requires a monthly list of committed persons. State corrections law sets minimum jail standards and requires an annual inspection of every county jail. A separate act requires that deaths in custody be reported. Together these rules turn a local jail into a documented, inspected, public facility.

Illinois open-records law sits on top of these rules. The Freedom of Information Act gives the public a broad right to inspect and copy jail and arrest records, and the jail reports its monthly population to the state's Jail and Detention Standards Unit. Note: the inspection report is public because state law requires the county to make each year's results available for review.

Kendall County and the State Prison Population

No state prison sits inside Kendall County. When a county defendant receives an Illinois prison sentence, that person leaves the local count and enters the Illinois Department of Corrections system. Processing starts at a reception and classification center, where the state screens for security level and program needs before assigning a permanent institution. From that point the search path changes. The county roster no longer follows the person, and the statewide locator becomes the right tool.

This is why the inmate population question has two answers. A pre-trial detainee from Yorkville, Oswego, or Plano shows up in the county jail count. A sentenced felon from the same town shows up in the state prison count instead. The home jail does not vanish from the story, because most state prisoners pass through the county jail first, but the public record splits in two at sentencing.

How to Search the Kendall County Inmate Population

The official tool is the Kendall County Sheriff's Office Illinois Inmate Inquiry at inmate.co.kendall.il.us. The Sheriff's homepage links it as "Inmate Search," and the Corrections Division page says the search returns inmate details, booking photos, charges, bond amount, release date, and arresting agency. The portal needs JavaScript to run, so use a current browser.

Before you start, have the person's name ready. A booking number or subject number narrows the result fast if you have one from an earlier record.

1. Open the inmate inquiry at inmate.co.kendall.il.us and let the search page load.
2. Enter the inmate's name. Use the Name field for a general search.
3. Narrow with the Booking Number, Subject Number, or a booking date range if the name returns too many results.
4. Open the detail link to view charges, bond, housing facility, release date, and the booking photo when one is posted.
5. If the person was sentenced to state prison, switch to the Illinois Department of Corrections locator instead of the county roster.

Current Inmate Lookup in Kendall County

The inmate inquiry covers both current detainees and released records, so a search can return someone in custody now or a past booking. Search-engine listings of the portal show the fields it accepts. The county does not publish a refresh schedule, so treat a result as a recent snapshot rather than a live count, and call the jail for an urgent custody question.

The roster is not the only channel. You can call the Sheriff's Office main line at 630-553-7500 or the non-emergency line at 630-553-5856, visit the Records Division in person, or file a records request when a booking does not appear online. The Kendall County Sheriff's Office also runs a mobile app for reporting crimes, sending tips, and public-safety news.

The Sheriff's app is listed on both major stores, and its App Store page describes its features.

The store listing advertises tips, crime reporting, and news rather than a roster, so the inmate inquiry website remains the main way to search the Kendall County inmate population.

Past and Released Inmate Records

Released records can still appear in the inmate inquiry, because some profiles carry a populated release date. The county does not publish how long a released booking stays online, so an older record may or may not show. When a booking is no longer visible, the Sheriff's Records Division is the fallback. Staff there handle police and jail records and can process a public-records request for a past booking.

An older Jail Booking Logs page exists with archived PDF logs, but the visible list reflects 2020 entries rather than a current daily report. For a person who was sentenced and sent to prison, the county roster will not hold the long-term record. Use the state locator for current state prisoners, and request archived corrections records through the Illinois Department of Corrections for a completed sentence.

What a Kendall County Inmate Record Shows

A profile in the inmate inquiry pulls together booking data, custody status, and basic demographics. The Sheriff's Corrections page confirms that charges, bond amount, release date, arresting agency, and a booking photo appear when available. Indexed profiles also expose identity fields such as name, subject number, age, sex, race, height, and weight.

Read the housing facility line carefully. One indexed Kendall profile listed a different county's jail, so a Kendall record can be tied to a person held elsewhere. A populated release date means release from county custody, not the end of a court case or a state hold.

County Jail vs. State Prison: Where to Look

The most common search mistake is using the wrong system. The county jail roster covers pre-trial detainees and short county sentences. The state locator covers sentenced felons in the Illinois Department of Corrections. They are separate records with separate identifiers, and a person can move from one to the other after sentencing.

For booking detail and the roster how-to, the jail inmate records page walks through every field and channel. Note: a sentenced inmate may drop off the county roster after transfer to state reception, so check the state locator if a name disappears.

State and Federal Inmate Search

Beyond the county jail, four systems cover the rest of the inmate population. The Illinois Department of Corrections runs the statewide locator for sentenced state prisoners and parolees. The federal Bureau of Prisons covers federal inmates, the U.S. Marshals Service handles federal pre-trial custody in the Northern District of Illinois, and the ICE locator covers immigration detainees. Illinois VINE adds custody and case notifications on top of all of them.

The state locator is the right next step when a Kendall County defendant is sentenced to prison, and its search page is shown below.

The IDOC Individual in Custody Search accepts a last name, a birthdate, or an IDOC number. For federal cases use the Bureau of Prisons locator or the U.S. Marshals Northern District of Illinois, and for immigration custody use the ICE detainee locator. Notifications come through Illinois VINE.

Kendall County Detention Facilities

Kendall County operates one detention facility. Sentenced state prisoners, federal inmates, and immigration detainees are held outside the county and searched through their own systems, so the local facility list is short and clear.

• Kendall County Jail - the county's only jail, run by the Sheriff's Office, holding pre-trial detainees and people serving sentences of up to one year.

Kendall County Inmate Population FAQ

How big is the Kendall County inmate population?

The jail is rated for 107 beds. The Sheriff's office reported an average daily population of about 81 in 2023, and the 2023 PREA audit listed a 12-month average of 84. A point-in-time state inspection in June 2024 counted 51 people. The county booked roughly 2,406 people across all of 2023.

How do I search the Kendall County inmate population?

Use the Kendall County Sheriff's Office Illinois Inmate Inquiry at inmate.co.kendall.il.us. Search by name, then narrow by booking number, subject number, or a booking date range. Open the profile to see charges, bond, housing facility, release date, and a booking photo when one is posted. The portal needs JavaScript to work.

Can I look up a released or past inmate?

Sometimes. The inmate inquiry can show released records with a populated release date, but the county does not publish how long an older booking stays online. If a past booking is gone, file a public-records request with the Sheriff's Records Division for the booking or arrest record.

Where do sentenced inmates go after the county jail?

A defendant sentenced to state prison enters the Illinois Department of Corrections, starting at a reception and classification center. At that point the search moves from the county roster to the IDOC Individual in Custody Search. The county jail does not track a person through the state prison system.

Is the Kendall County jail roster public record?

Yes. Illinois open-records law gives the public a broad right to jail and arrest information, and the inmate inquiry is free to use. Some material can be redacted or withheld under FOIA exemptions, and the Sheriff's Records Division handles formal requests for records not shown online.

Does the Kendall County Sheriff have an inmate app?

The Sheriff's Office offers a mobile app, but its store listings advertise crime reporting, tip submission, and public-safety news rather than an inmate roster. The inmate inquiry website is the official way to search the population. Do not rely on the app for custody status.