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. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 24, 2026 and September 30, 2026.
Canyon County, Idaho, has about 267,000 residents (2024 Census Bureau estimate), and arrests there are reported to the FBI by the Canyon County Sheriff's Office and five city agencies. 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 Canyon 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: Canyon County public records, Idaho arrest records, Idaho inmate search and Idaho criminal records.
Who Makes Arrests in Canyon County
The Canyon County Sheriff's Office is the county agency that reports arrests to the FBI for Canyon County. It reported 1,177 arrests for 2025.
Arrests inside five of the county's cities are reported to the FBI by an agency of the city's own, listed here with the Census population and what each reported:
- Nampa, 117,350 residents: 2,622 arrests reported for 2025.
- Caldwell, 73,088 residents: 1,680 arrests reported for 2024.
- Middleton, 11,730 residents: 190 arrests reported for 2025.
- Parma, 2,198 residents: 75 arrests reported for 2025.
- Wilder, 1,725 residents: 81 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 Canyon 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.
- Nampa: 2,622 for 2025, 2,781 for 2024, 3,343 for 2023, 3,227 for 2022, 3,363 for 2021 and 3,177 for 2020.
- Canyon County Sheriff's Office: 1,177 for 2025, 892 for 2024, 909 for 2023, 965 for 2022, 1,021 for 2021 and 1,000 for 2020.
- Middleton: 190 for 2025, 170 for 2024, 206 for 2023, 104 for 2022, 98 for 2021 and 52 for 2020.
- Wilder: 81 for 2025, 97 for 2024 and 144 for 2023.
- Parma: 75 for 2025, 61 for 2024, 100 for 2023, 151 for 2022, 157 for 2020 and 123 for 2019; 2021 is missing months.
- Caldwell: 1,680 for 2024, 1,548 for 2022, 1,649 for 2020 and 1,811 for 2019; 2021 and 2023 are missing months.
Together, the five agencies with all twelve months of 2025 on file reported 4,145 arrests that year. The same agencies with both 2025 and 2024 complete reported 4,145 in 2025 against 4,001 in 2024, up 3.6 percent.
Caldwell reported only part of 2025 (11 months) and is left out of the totals.
Booking: Where People Arrested in Canyon County Are Held
The county jail is where a person arrested in Canyon 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.
On an average day in 2023 the jail held about 430 people, up from about 420 in 2019. Its rated capacity in 2023 was 525 beds, and it ran at 82 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
SearchSystems opened and checked the custody page of the Canyon County Sheriff's Office at jailroster.canyoncounty.id.gov (page title: Jail Roster), phone (208) 454-7541, which answered when SearchSystems opened it on September 30, 2026.
That page is the place to look for someone who was booked recently; a person cited and released at the scene, or held only a few hours by a city department, will not be on it.
A person sentenced to prison serves the sentence in a facility of the Idaho Department of Correction, whose inmate locator is at idoc.idaho.gov/content/prisons/resident-client-search.
How to Find Out About an Arrest in Canyon County
Whether someone was arrested in Canyon County, and what came of it, shows up in three places: the custody page of the Canyon County Sheriff's Office described above, for anyone booked into the county jail; the case index of the Canyon County District Court, which shows whether charges were filed and the next court date (the court records page SearchSystems verified is at canyoncounty.id.gov/court-records-request, phone 208-454-7495); the Prosecuting Attorney, which decides whether an arrest becomes a charge (its page is at canyoncounty.id.gov/elected-officials/prosecuting-attorney, phone 208-454-7391).
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 Canyon County
The report of an arrest is released by the agency that made it; the jail and the court hold their own records of the same event, but not the report. 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 Canyon County Sheriff's Office: ask its records unit, reached through the office at (208) 454-7541.
- An arrest in Nampa, Caldwell, Middleton, Parma or Wilder: 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, 208-454-7391, handles discovery for pending cases.
- The court file of a case that was filed: the Canyon County District Court, through the court records page at canyoncounty.id.gov/court-records-request, phone 208-454-7495.
- Any county record that is not posted: the county records request page SearchSystems verified is at canyoncounty.id.gov/public-records-request (page title: Public Records Request | Canyon County).
- Your own statewide record: a fingerprint-based request to the Bureau of Criminal Identification.
Cities in Canyon County: Who Reports the Arrests
The FBI lists a separate arrest reporting agency for five of the eight cities in Canyon County: Nampa, Caldwell, Middleton, Parma and Wilder. Greenleaf, Melba and Notus 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 Canyon County District Court.
SearchSystems has a guide to the offices of these cities in Canyon County, with the 2024 Census Bureau population; a city with its own arrest records guide opens there:
Frequently Asked Questions
How many arrests are made in Canyon County each year?
Nampa reported 2,622 arrests to the FBI for 2025, and the five agencies with every month of 2025 on file reported 4,145 between them.
How do I find out if someone is in jail in Canyon County?
Look on the custody page of the Canyon County Sheriff's Office at jailroster.canyoncounty.id.gov, or call (208) 454-7541. It covers people booked into the county jail.
Where are people arrested in Canyon County booked?
Those kept in custody go to the county jail, run by the Canyon County Sheriff's Office; a person cited and released at the scene is not booked.
Are arrest records public in Canyon 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 Canyon County?
From the agency that made the arrest: the Canyon 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; the county records request page SearchSystems verified is at canyoncounty.id.gov/public-records-request.
Is this the official Canyon 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.