Reviewed and updated October 11, 2026 by the SearchSystems.net editorial team. The arrest 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 24, 2026 and October 11, 2026.
Preston, Idaho, in Franklin County, has about 6,200 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Preston is held at the county jail, run by the Franklin County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, who books people, state prison and common questions.
Related guides: Preston public records, Franklin County inmate search, Preston arrest records, Preston warrants, Preston criminal records, Preston court records, Idaho arrest records and Idaho inmate search.
Finding Someone in Custody in Preston
The county jail, run by the Franklin County Sheriff's Office, holds everyone kept in custody after an arrest in Preston, from every agency.
SearchSystems opened and checked the jail page of the Franklin County Sheriff's Office at franklincountyidaho.org/county_justice/sheriffs_office.php (page title: Franklin County), phone 208-852-1090, 39 W. Oneida Street, Preston, ID 83263, which answered when SearchSystems opened it on October 11, 2026.
That page is the office's jail information page rather than a roster, so a search for a particular person goes through the office at 208-852-1090.
Who Books People Into the Franklin County Jail
The Franklin County Sheriff's Office and the agency that reports for Preston (filed by the FBI as Preston Police Department) make the arrests that end in a booking in and around Preston.
The largest arrest counts reported to the FBI were the Franklin County Sheriff's Office's 55 for 2025 and Preston's 18 for 2025.
Together, the two agencies in Franklin County with all twelve months of 2025 on file reported 73 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Preston arrest records.
From the Jail to State Prison
A sentence of more than a year is served in state prison, not the jail; the Idaho Department of Correction lists its inmates at idoc.idaho.gov/content/prisons/resident-client-search.
Frequently Asked Questions
How do I find an inmate in Preston?
Ask the Franklin County Sheriff's Office at 208-852-1090; its jail page SearchSystems verified is at franklincountyidaho.org.
What is the phone number for the Franklin County jail?
208-852-1090, the number on the page of the Franklin County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Franklin County go?
To a facility of the Idaho Department of Correction; its inmate locator is at idoc.idaho.gov.
Is this the official Preston website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.