Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest and crime 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 September 26, 2026.
Oskaloosa, Iowa, in Mahaska County, has about 12,000 residents (2024 Census Bureau estimate). In Iowa the public criminal record is the court file, kept by the Clerk of the District Court; the statewide criminal history kept by the Iowa Division of Criminal Investigation is open to anyone who asks. This guide says where each record of a criminal case from Oskaloosa is kept and how it is seen.
This guide covers the court file, the statewide record, local arrest records, the crimes behind the records, the prosecutor, sex offender registry, records requests and common questions.
Related guides: Oskaloosa public records, Mahaska County criminal records, Oskaloosa arrest records, Oskaloosa warrants, Oskaloosa inmate search, Oskaloosa court records, Iowa arrest records and Iowa inmate search.
Criminal Cases in the Iowa District Court for Mahaska County
A criminal case from Oskaloosa is filed in the Iowa District Court for Mahaska County, and the court file, kept by the Clerk of the District Court, is the record of it that the public may see.
The court records page SearchSystems verified for the county is at mahaskacountyia.gov/clerk_of_court (page title: Clerk of Court | Mahaska County, Iowa), phone (641) 673-7786, 106 South 1st Street, 2nd Floor Oskaloosa, IA 52577, which answered when SearchSystems opened it on September 24, 2026.
Statewide, Iowa Courts Online is the Iowa Judicial Branch's free statewide case search.
The Iowa Criminal History and Your Own Copy
Iowa is one of the states that lets anyone look up another person's statewide criminal history: anyone can request a name-based criminal history check online, through the Iowa Division of Criminal Investigation. The result is the repository record, what agencies reported to the state, which is wider than one county's court index but can lag it.
Arrest Records Kept Locally in Oskaloosa
The Mahaska County Sheriff's Office and the agency that reports for Oskaloosa (filed by the FBI as Oskaloosa Police Department) keep the arrest records in and around Oskaloosa: the report and the booking record of each arrest stay with the agency that made it, separate from the court file and from the state repository.
The Pella Police Department is listed by the FBI across two counties including Mahaska County, so its arrests are not broken out for Mahaska County here.
Together, the three agencies in Mahaska County with all twelve months of 2025 on file reported 437 arrests to the FBI that year; how each case ended is in the court file, not in the arresting agency's.
The agencies and their counts, year by year, are in Oskaloosa arrest records.
The Crimes Behind the Records: Oskaloosa in 2025
The agency that reports for Oskaloosa had 34 violent and 114 property crimes reported for 2025; each one is a report on file with it, and each arrest that follows is the start of a criminal record.
The County Attorney for Mahaska County
The County Attorney decides which arrests in Mahaska County become charges and files them in the Iowa District Court for Mahaska County; the office answers questions about pending prosecutions, and the case files themselves are court records.
The office's page SearchSystems verified is at mahaskacountyia.gov/attorney (page title: Attorney | Mahaska County, Iowa), phone (641) 673-9819, 106 South 1st Street, 3rd Floor, NE Corner Oskaloosa, IA 52577, which answered when SearchSystems opened it on September 24, 2026.
The Sex Offender Registry for Oskaloosa
Registered sex offenders living in Oskaloosa are listed on the Iowa Sex Offender Registry, run by the Iowa Department of Public Safety at iowasexoffender.gov. The registry is public and can be searched online; the county sheriff registers them.
Registration itself is done in person with the local agency where the registrant lives: the sheriff's office, or the city police in a city with its own department.
Asking an Agency in Mahaska County for a Record
An arrest report, a booking record or a local criminal history letter comes from the agency that holds it, not from the court.
Under the Iowa Open Records Law (Chapter 22) a county office must answer a request without delay; the law sets no fixed number of days, and a delay past 20 days must be justified, and it may charge the actual cost of copying and retrieval.
Frequently Asked Questions
Are criminal records public in Oskaloosa?
The court files of criminal cases are public, and so is the statewide criminal history kept by the Iowa Division of Criminal Investigation: anyone can request a name-based criminal history check online. The arrest report itself is released by the agency that made the arrest, under the Iowa Open Records Law (Chapter 22).
Can I search Oskaloosa criminal cases online?
The court records page SearchSystems verified for the county is at mahaskacountyia.gov/clerk_of_court (page title: Clerk of Court | Mahaska County, Iowa). Statewide, Iowa Courts Online is the Iowa Judicial Branch's free statewide case search.
How do I get my own Iowa criminal history?
Through the same record check, run on yourself.
Who prosecutes crimes in Oskaloosa?
The County Attorney, reached at (641) 673-9819, which files its cases in the Iowa District Court for Mahaska County.
Is this the official Oskaloosa 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.