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 23, 2026 and October 2, 2026.
Atchison County, Missouri, has about 5,100 residents (2024 Census Bureau estimate). A police report belongs to the agency whose officer wrote it, so which office holds a report from Atchison County depends on where the incident happened: the Atchison County Sheriff's Office for the unincorporated county, the agency that reports for the city inside a city. This guide names each agency, where its records page is and what the Missouri Sunshine Law requires of it.
This guide covers which agency, the sheriff's reports, the cities' reports, how many reports, what the law requires and common questions.
Related guides: Atchison County public records, Atchison County arrest records, Atchison County warrants, Atchison County criminal records, Atchison County court records, Missouri arrest records and Missouri inmate search.
Which Agency Holds a Report from Atchison County
The report of an incident is released by the agency that took it; the court and the jail hold their own records of the same event, but not the report.
In Atchison County that is the Atchison County Sheriff's Office for the unincorporated county and for any city that contracts with it for police service, and the agency that reports for a city where the city has one of its own.
Reports from the Atchison County Sheriff's Office
The Atchison County Sheriff's Office is the county agency; it had 1 violent and 22 property crimes reported for 2022 and reported 37 arrests for 2025.
Its reports come from its records unit.
Reports from the City Agencies in Atchison County
The two cities the FBI lists in Atchison County with a reporting agency of their own:
- Tarkio: 80 arrests reported for 2019.
- Rock Port: 2 violent and 3 property crimes reported for 2022; 3 arrests reported for 2024.
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 Reports: Atchison County in 2022
The two agencies in Atchison County with all twelve months of 2022 on file reported 3 violent and 25 property crimes to the FBI that year, each one a report taken by the agency that holds it.
Together, the two agencies in Atchison County with all twelve months of 2022 on file reported 26 arrests to the FBI that year, and each arrest is a report of its own.
What the Missouri Sunshine Law Requires
The Missouri Sunshine Law sets the rules: an answer within 3 business days, at a charge of research time and copying, from the agency that holds the report.
Frequently Asked Questions
How do I get a police report in Atchison County?
From the agency whose officer took it: the Atchison County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Missouri Sunshine Law the answer is due within 3 business days.
How long does an agency in Atchison County have to answer?
Under the Missouri Sunshine Law, within 3 business days. It may charge research time and copying.
How do I get a report from the Atchison County Sheriff's Office?
From its records unit. Under the Missouri Sunshine Law the answer is due within 3 business days.
Is this the official Atchison 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.