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 on September 24, 2026.
Jasper County, Iowa, has about 38,000 residents (2024 Census Bureau estimate), and arrests there are reported to the FBI by the Jasper County Sheriff's Office and four 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 County Attorney files charges, a case in the Iowa District Court for Jasper County. 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: Jasper County public records, Iowa arrest records, Iowa inmate search and Iowa criminal records.
Who Makes Arrests in Jasper County
The Jasper County Sheriff's Office is the county agency that reports arrests to the FBI for Jasper County. It reported 300 arrests for 2025.
Arrests inside four 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:
- Newton, 15,709 residents: 579 arrests reported for 2025.
- Colfax, 2,305 residents: 15 arrests reported for 2025.
- Monroe, 2,021 residents: 26 arrests reported for 2025.
- Prairie City, 1,722 residents: 8 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.
The Mitchellville Police Department is listed by the FBI across two counties including Jasper County, so its arrests are not broken out for Jasper County here.
How Many Arrests Each Agency Reports in Jasper County
The FBI publishes every agency's monthly arrest counts 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.
- Newton: 579 for 2025, 616 for 2024, 700 for 2023, 647 for 2022, 570 for 2021 and 746 for 2020.
- Jasper County Sheriff's Office: 300 for 2025, 305 for 2024, 415 for 2022 and 367 for 2021; 2023 is missing months.
- Monroe: 26 for 2025, 66 for 2024, 59 for 2023, 64 for 2022 and 12 for 2021.
- Colfax: 15 for 2025, 9 for 2024, 18 for 2023, 10 for 2022, 15 for 2020 and 12 for 2019; 2021 is missing months.
- Prairie City: 8 for 2025, 9 for 2024, 13 for 2023, 2 for 2022 and 48 for 2019; 2020 and 2021 are missing months.
Together, the five agencies with all twelve months of 2025 on file reported 928 arrests that year. The same agencies with both 2025 and 2024 complete reported 928 in 2025 against 1,005 in 2024, down 7.7 percent.
Through August 2026, the five agencies with every month so far on file reported 508 arrests, against 656 in the same months of 2025.
Booking: Where People Arrested in Jasper County Are Held
A person kept in custody after an arrest in Jasper County is held at the county jail, whichever agency made the arrest, apart from the short stay some city departments' own holding cells allow; a person cited and released at the scene is not booked at all. The jail's record of each person held, with the charges, is a public record of the arrest, and the court file takes over from there.
On an average day in 2019 the jail held about 67 people. Its rated capacity in 2019 was 127 beds, and it ran at 53 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 Jasper County Sheriff's Office at jasperso.com/inmate-roster (page title: Inmate Roster | Jasper SO), which answered when SearchSystems opened it on September 24, 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 sentence of more than a year is served in state prison; the Iowa Department of Corrections lists its inmates at doc.iowa.gov/inmate-family-services.
How to Find Out About an Arrest in Jasper County
Whether someone was arrested in Jasper County, and what came of it, shows up in three places: the custody page of the Jasper County Sheriff's Office described above, for anyone booked into the county jail; the case index of the Iowa District Court for Jasper County, which shows whether charges were filed and the next court date (the court records page SearchSystems verified is at iowacourts.gov/iowa-courts/district-court/judicial-district-5/distr..., phone 641-792-3255); the County Attorney, which decides whether an arrest becomes a charge (its page is at jasperia.org/attorney, phone 641-792-5010).
Statewide, Iowa Courts Online is the Iowa Judicial Branch's free statewide case search.
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. 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 Jasper 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 Iowa Open Records Law (Chapter 22) the agency must answer 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.
- An arrest by the Jasper County Sheriff's Office: ask its records unit.
- An arrest in Newton, Colfax, Monroe or Prairie City: 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 County Attorney, 641-792-5010, handles discovery for pending cases.
- The court file of a case that was filed: the Iowa District Court for Jasper County, through the court records page at iowacourts.gov, phone 641-792-3255.
- Your own statewide record: the same request described above, for your own name.
Cities in Jasper County: Who Reports the Arrests
The FBI lists a separate arrest reporting agency for four of the 13 cities in Jasper County: Newton, Colfax, Monroe and Prairie City. Baxter, Sully, Kellogg, Lynnville, Mingo, Oakland Acres, Lambs Grove, Reasnor and Valeria 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 Iowa District Court for Jasper County.
SearchSystems has a guide to the offices of these cities in Jasper County, with the 2024 Census Bureau population; a city with its own arrest records guide opens there:
- Newton (15,709)
Frequently Asked Questions
How many arrests are made in Jasper County each year?
Newton reported 579 arrests to the FBI for 2025, and the five agencies with every month of 2025 on file reported 928 between them.
How do I find out if someone is in jail in Jasper County?
Look on the custody page of the Jasper County Sheriff's Office at jasperso.com/inmate-roster. It covers people booked into the county jail.
Where are people arrested in Jasper County booked?
Those kept in custody go to the county jail, run by the Jasper County Sheriff's Office; a person cited and released at the scene is not booked.
Are arrest records public in Jasper County?
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).
How do I get a copy of an arrest report in Jasper County?
From the agency that made the arrest: the Jasper County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Iowa Open Records Law (Chapter 22) the answer is due without delay; the law sets no fixed number of days, and a delay past 20 days must be justified.
Is this the official Jasper 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.