Reviewed and updated October 9, 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 on September 24, 2026.
Franklin County, Idaho, has about 16,000 residents (2024 Census Bureau estimate), and arrests there are reported to the FBI by the Franklin County Sheriff's Office and one city agency. An arrest leaves the same records whoever makes it: the arresting agency's report, the record of anyone held at the county jail, and, if the Prosecuting Attorney files charges, a case in the Franklin County District Court. This guide says who keeps each one, what it costs and who may see it, with the arrest counts each agency reported.
This guide covers who makes arrests, how many arrests, booking and the jail, finding an arrest, copies, cities and common questions.
Related guides: Franklin County public records, Idaho arrest records, Idaho inmate search and Idaho criminal records.
Who Makes Arrests in Franklin County
The Franklin County Sheriff's Office is the county agency that reports arrests to the FBI for Franklin County. It reported 55 arrests for 2025.
The FBI lists one city in Franklin County with a reporting agency of its own:
- Preston, 6,160 residents: 18 arrests reported for 2025.
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 Arrests Each Agency Reports in Franklin County
Each agency reports its arrests to the FBI by month, and the FBI publishes them on the Crime Data Explorer. These are the full-year totals, all offenses, as the FBI held them on October 8, 2026; a year with months missing or not reported is left out.
- Franklin County Sheriff's Office: 55 for 2025, 52 for 2024, 36 for 2023, 63 for 2022, 51 for 2021 and 47 for 2020.
- Preston: 18 for 2025, 61 for 2024, 58 for 2023, 52 for 2022, 69 for 2021 and 79 for 2020.
Together, the two agencies with all twelve months of 2025 on file reported 73 arrests that year. The same agencies with both 2025 and 2024 complete reported 73 in 2025 against 113 in 2024, down 35 percent.
Through May 2026, the two agencies with every month so far on file reported 15 arrests, against 22 in the same months of 2025.
Booking: Where People Arrested in Franklin County Are Held
The county jail is where a person arrested in Franklin County and kept in custody ends up, whichever agency made the arrest, though a city department may hold someone in its own cells first and a person cited and released at the scene is never booked. The jail's record of each person held, with the charges, is a public record of the arrest, and once the person is released or sentenced the record continues in the court file.
A sentence of more than a year is served in state prison; the Idaho Department of Correction lists its inmates at idoc.idaho.gov/content/prisons/resident-client-search.
How to Find Out About an Arrest in Franklin County
An arrest in Franklin County can be traced in two places, depending on where the case stands: the case index of the Franklin County District Court, which shows whether charges were filed and the next court date (the court records page SearchSystems verified is at fcmcclerk.com/case/search); the Prosecuting Attorney, which decides whether an arrest becomes a charge (its page is at franklincountyidaho.org/county_justice/prosecuting_attorney_s_offic..., phone 208-852-1090).
Statewide, iCourt Portal is the Idaho courts' free statewide case search.
Idaho is one of the states that lets anyone look up another person's statewide criminal history: name-based conviction checks are open to the public, through the Idaho State Police Bureau of Criminal Identification. That record shows what agencies reported to the state, which is wider than one county's court index but can lag it.
Getting a Copy of an Arrest Record in Franklin County
An arrest report belongs to the agency whose officer wrote it, and that agency releases it, not the court or the jail. Under the Idaho Public Records Act the agency must answer within 3 working days, or 10 when more time is needed, and it may charge copying after the first 100 pages and labor after the first two hours.
- An arrest by the Franklin County Sheriff's Office: ask its records unit.
- An arrest in Preston: the records unit of the agency that reports for that city; the city guides linked above name each city's records office.
- A defendant who has been charged gets the report through the case: the Prosecuting Attorney, 208-852-1090, handles discovery for pending cases.
- The court file of a case that was filed: the Franklin County District Court, through the court records page at fcmcclerk.com/case/search.
- Your own statewide record: a fingerprint-based request to the Bureau of Criminal Identification.
Cities in Franklin County: Who Reports the Arrests
The FBI lists a separate arrest reporting agency for one of the six cities in Franklin County: Preston. Franklin, Weston, Dayton, Clifton and Oxford have no separate reporting agency in the FBI's list.
Wherever in the county the arrest happens, a person kept in custody goes to the county jail and the case goes to the Franklin County District Court.
SearchSystems has a guide to the offices of these cities in Franklin County, with the 2024 Census Bureau population; a city with its own arrest records guide opens there:
- Preston (6,160)
Frequently Asked Questions
How many arrests are made in Franklin County each year?
The Franklin County Sheriff's Office reported 55 arrests to the FBI for 2025, and the two agencies with every month of 2025 on file reported 73 between them.
Where are people arrested in Franklin County booked?
Those kept in custody go to the county jail, run by the Franklin County Sheriff's Office; a person cited and released at the scene is not booked.
Are arrest records public in Franklin County?
The court files of criminal cases are public, and so is the statewide criminal history kept by the Idaho State Police Bureau of Criminal Identification: name-based conviction checks are open to the public. The arrest report itself is released by the agency that made the arrest, under the Idaho Public Records Act.
How do I get a copy of an arrest report in Franklin County?
From the agency that made the arrest: the Franklin County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Idaho Public Records Act the answer is due within 3 working days, or 10 when more time is needed.
Is this the official Franklin 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.