Located at:
424 Shoshone Street North
Twin Falls, ID 83303-0306
the Twin Falls County Detention Facility books adults arrested for felonies and misdemeanors throughout Twin Falls County.
The county sheriff runs the jail. Deputies process their own arrestees here, and officers from city police departments in the county bring theirs to the same booking area. Detention deputies photograph and fingerprint each person, list their property, check for warrants and do a medical screening before deciding where to house them.
Idaho State Police troopers book their arrests here as well, and federal agencies including the U.S. Marshals and ICE may hold people at the jail.
Idaho does not have sanctuary jurisdictions, and a 2025 state law, House Bill 83, gives local law enforcement authority to take part in immigration enforcement. Jails in the state generally honor ICE detainers, so a person with a hold may stay in custody for pickup by federal agents after their local case is resolved. Parts of that law creating new state immigration crimes have been blocked by a federal court while a lawsuit continues.
Commercial bail is legal in Idaho, and bail agents must be licensed by the Idaho Department of Insurance. Many misdemeanors have a bond amount set by a schedule, so bond can be posted soon after booking. People who stay in jail are brought before a magistrate without unnecessary delay, and a judge must review a warrantless arrest for probable cause within 48 hours. Magistrates may also release defendants on their own recognizance. See our Bail page for instructions.
The sheriff posts recent bookings on its official booking list (opens in a new tab), which may include a booking photo, the charges and the agency that made the arrest. If a listing is unclear, call the Twin Falls County Detention Facility at 208-734-9090.
The time between arrival and placement in a housing unit or release usually runs two hours or more and can take up to a day if several arrests come in together.
Phone the Twin Falls County Detention Facility at 208-734-9090 and ask whether the person has been booked.
A deputy or records clerk can usually confirm custody and charges. You will likely need to give the person’s name and date of birth.
Give it a few hours after an arrest; records are not always visible until booking is complete.
The Twin Falls County Detention Facility Booking Roster online lists current inmates if you prefer to look them up yourself.
Arrests across Twin Falls County, whether by deputies, city police or state troopers, usually end with a trip to the sheriff’s jail. Miranda warnings are required before officers question someone in custody about the offense.
Booking is a series of steps. Defense lawyers usually advise people to keep the details of the case to themselves, because what they say in custody can be recorded and used against them.
A mugshot and fingerprints are taken, and the person answers questions about their history and well-being. A records check looks for warrants in Twin Falls County, the rest of Idaho and other states. DNA may be collected in certain serious felony cases.
Under Idaho’s implied consent law, a driver who refuses an evidentiary test after a DUI arrest faces a civil penalty and a license suspension. Officers can seek a warrant to draw blood if the driver will not consent.
Before entering general population, a person may be strip searched and screened with a metal detector or body scanner.
Deputies ask about health conditions, medications, recent drug or alcohol use, allergies, thoughts of suicide, tattoos, gang connections and any safety concerns with other inmates. The answers determine housing and whether medical or mental health staff need to follow up.
The jail takes custody of personal belongings and returns them at release. With the inmate’s signed permission, a friend or relative can often collect property sooner.
Property includes the clothes they arrived in, cash, wallets, purses, phones, jewelry, piercings and watches. Glasses may be held for safety reasons, and laces are removed from shoes.
Next, the person can typically place a call to let family know about the arrest or to start working on bond, either by paying it directly or through a licensed bail agent.
If they remain in custody awaiting arraignment, the jail issues a uniform, shoes, bedding, a towel and hygiene basics.
New inmates may be required to shower and receive delousing treatment before heading to housing.
Booking can be done within an hour or take a day or longer. The number of arrestees, available staff and the person’s cooperation all affect the timeline.
A person who is extremely intoxicated or violent may be kept in a holding cell for several hours before booking continues.