Search the Madison County Inmate Population

Madison County Inmate Population Overview

The Madison County inmate population is reported most clearly through the Madison County Detention Center, the county jail operated by the Madison County Sheriff's Office. Official county and high-authority sources did not identify a separate state prison, federal prison, ICE detention center, or long-term Rexburg city jail inside Madison County. That keeps the local facility map simple, but it does not make custody simple. The sheriff detention page says the jail serves agencies inside and outside Madison County, including Rexburg Police Department, Teton County, neighboring counties, Saint Anthony Work Camp, and immigration detainees.

That mixed custody role matters when a family member is trying to find someone. A person arrested in Rexburg may be booked at the county jail. A person with an immigration hold may also be physically held there, even though ICE has its own locator. A sentenced felony prisoner from Madison County may later move to Idaho Department of Correction custody and disappear from local jail channels. The best Madison County inmate population search therefore starts with the county jail for current custody, then checks iCourt, IDOC, BOP, ICE, and VINELink when the local answer is incomplete.

Madison County Inmate Population Statistics

The strongest sourced population figures come from the Idaho Sheriffs' Association jail directory and the sheriff detention page. The directory lists Madison County Jail with a rated capacity of 96 and an average daily population of 90 in the 2026 crawl used for the research file. That places the jail at 93.75 percent of rated capacity when the average daily population is divided by the listed capacity. The sheriff detention page adds older PREA summary figures showing annual booking counts by sex for 2017 and 2018.

The Idaho jail directory screenshot captured for this build shows the Madison County Jail entry with the capacity and average daily population source used above.

The directory image is useful because it separates current association-reported jail capacity from older third-party bed counts that were not used.

Madison County Booking Trends

Madison County does not publish a current daily jail population dashboard in the research file. The local trend record is therefore built from the sheriff's older PREA summaries and the current jail-directory snapshot. Those sources show booking activity in the late 2010s and the later association-reported capacity picture. The booking count declined from 786 in 2017 to 744 in 2018. Male bookings made up 69.7 percent of the 2017 total and 71.4 percent of the 2018 total. Female bookings made up the balance.

These are not interchangeable measures. Annual bookings count people entering custody over time. Average daily population is the average number of people held on a day. Rated capacity is the number of people the facility is listed to hold. A jail can have a high annual booking count and a smaller daily count if many people are released quickly after court, bond, transfer, or citation processing.

Who Is in Madison County Custody

The Madison County inmate population includes adults accused of criminal acts, adults convicted of criminal acts, and people held for civil violations. The sheriff detention page also says the jail provides service for agencies in and out of Madison County. That detail is important because the custody record may involve more than one agency. A person can have a local criminal case, an out-of-county hold, an immigration hold, or a state custody issue at the same time.

The research did not locate official Madison County jail counts by race, age, charge level, sentence status, or length of stay. The safest demographic detail is the sex breakdown from the sheriff's older booking summaries: 2017 bookings were 548 male and 238 female, while 2018 bookings were 531 male and 213 female. Those are booking counts, not a point-in-time jail census. The county context from U.S. Census QuickFacts is separate from jail custody, but it helps explain the service area: Madison County had a 2025 population estimate of 55,172 and a 2020 land area of 469.27 square miles.

• Local arrests: Madison County Sheriff's Office and Rexburg Police Department arrests can lead to booking at the county jail.
• Neighboring agencies: The sheriff page names Teton County and other neighboring counties as populations served.
• Immigration detainees: Immigration custody may require both the county jail phone line and ICE ODLS.
• State custody links: The jail page names Saint Anthony Work Camp, though no IDOC prison is located in Madison County.
• Sentenced prisoners: Felony sentences under IDOC jurisdiction should be searched in the state resident/client locator.

Madison County Jail Record Laws

Idaho law explains why some Madison County inmate population facts can be requested, while other parts may be redacted. Idaho Code 74-102 gives every person the right to examine and copy public records unless an exemption applies. Idaho Code 74-103 controls the request and copying framework. Idaho Code 74-105 covers law-enforcement investigatory exemptions, which can affect booking records, mugshots, reports, victim data, witness information, juvenile matters, and active case material.

For a Madison County inmate population search, this means current custody can often be checked by phone, while a formal copy of a booking record or booking photo may require a records request. If the record is tied to an active investigation or sealed court matter, the answer may be partial.

Search Madison County Jail Custody

No official public current-inmate roster was located on the Madison County Sheriff's Office website in the research file. The sheriff site has detention, visitation, phone-service, records, and contact pages, but it does not expose a searchable current-inmates table in the reviewed navigation. The practical custody search is therefore a fallback chain. Start with the jail phone for current custody. Use the Madison County NextRequest portal or the sheriff records form for booking records. Use VINELink for custody notification when agency data is available.

Have identifying details ready before calling or filing a request. Full legal name is the first need. Date of birth, approximate age, arrest date, arresting agency, case number, and known aliases can keep staff from matching the wrong person. If immigration custody is possible, ask both whether the person is physically held at the county jail and whether an ICE hold or transfer is involved.

1. Call the jail for current custody, recent booking, release, transfer, and hold information.
2. Use the sheriff public-records request process for booking records, jail records, and historical custody details.
3. Search Idaho iCourt after a case is filed to review charges, hearings, warrants, bond, and disposition.
4. Search IDOC Resident/Client Search after sentencing, probation, parole, or transfer to state jurisdiction.
5. Use BOP for federal prison records and ICE ODLS for immigration custody.

Madison County Search Fields

Because an official Madison County online jail roster was not located, there is no local roster field list to render. The known search fields come from the state and federal locators that may apply after the county jail stage. Keep the person's legal name, date of birth or approximate age, arrest date, arresting agency, and any case or ID number ready. Those details help jail staff and reduce false matches in statewide systems.

The IDOC Resident/Client Search screenshot shows the state fields used when a Madison County case has moved beyond county jail custody.

IDOC is a state-custody tool, so it should not be treated as the Madison County jail roster for recent arrests.

Madison County Inmate Record Details

Madison County does not appear to publish an online jail profile with public fields such as housing unit, bond amount, or mugshot. The sheriff detention page does confirm intake duties, daily jail records, releases, court transport, mail inspection, commissary-money receipt, fingerprinting, and photographing. A public-records request can ask for releasable parts of those records, but Idaho exemptions may limit active investigation material or private information.

Madison County Jail vs State Prison

The county jail and IDOC serve different parts of the Madison County inmate population. The county jail handles local booking, pretrial custody, short local sentences, holds, releases, and court transport. IDOC handles people on court probation or under state correctional jurisdiction, including incarcerated people, probationers, and parolees. IDOC also says its database is updated daily but may not show the most current location, status, scheduled termination date, or mailing address during transfer.

Federal and immigration records add another layer. BOP says its locator covers federal inmates from 1982 to the present and does not cover non-federal county inmates. ICE ODLS can locate some detainees in ICE custody or CBP custody for more than 48 hours, but it cannot search minors under 18. Madison County's detention page names immigration detainees as a population served, so both the county jail and ICE ODLS may be needed for one person.

Madison County Detention Facility

The only detention facility in the Madison County facility map is the Madison County Detention Center. The sheriff site calls the building the Sheriff's Office and Detention Center, and the Idaho Sheriffs' Association directory lists it as Madison County Jail. It is a county-operated adult detention center, not a state prison or federal prison. Rexburg Police Department has a police office, but no separate long-term Rexburg city jail was located in official sources.

• Madison County Detention Center holds adults in local custody, short sentences, civil-violation custody, other-agency holds, and some immigration detainees.

Madison County Inmate FAQ

How big is the Madison County inmate population?

The best sourced jail snapshot lists 90 average daily population and 96 rated capacity for Madison County Jail in the Idaho Sheriffs' Association directory. The sheriff detention page also provides older PREA booking counts for 2017 and 2018.

Is there a Madison County online jail roster?

No official public current-inmate roster was located on the Madison County Sheriff's Office website in the research file. Current custody checks should start with the jail, then move to records requests, VINELink, iCourt, IDOC, BOP, or ICE depending on the custody stage.

Where do court charges appear after booking?

Formal criminal charges appear in Idaho iCourt after the prosecutor files the case. Jail booking information may show an arrest reason or hold, but a pending court charge is not the same as a conviction.