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.
Atchison County, Kansas, has about 16,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Atchison County is held at the county jail, run by the Atchison County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people, state prison and common questions.
Related guides: Atchison County public records, Atchison County arrest records, Atchison County warrants, Atchison County criminal records, Atchison County court records, Kansas arrest records and Kansas inmate search.
Finding Someone in Custody in Atchison County
The county jail, run by the Atchison County Sheriff's Office, holds everyone kept in custody after an arrest in Atchison County, from every agency.
SearchSystems opened and checked the custody page of the Atchison County Sheriff's Office at atcosheriffks.org/inmate-roster/filters/current/booking_time=desc/1 (page title: Inmate Roster | Atchison County Kansas Sheriff's Office | Sort Booking Time | Descending | Page 1), phone 913.804.6100, which answered when SearchSystems opened it on September 24, 2026.
That page is the place to look for someone 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.
The Atchison County Jail by the Numbers
On an average day in 2019 the jail held about 72 people. Its rated capacity in 2019 was 73 beds, and it ran at 99 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Atchison County has about 16,000 residents (2024 Census Bureau estimate), so the jail holds about 44 people for every 10,000 residents.
Who Books People Into the Atchison County Jail
The Atchison County Sheriff's Office and the agency that reports for Atchison make the arrests that end in a booking in Atchison County.
The largest arrest counts reported to the FBI were Atchison's 228 for 2025 and the Atchison County Sheriff's Office's 66 for 2024.
Together, the two agencies in Atchison County with all twelve months of 2024 on file reported 303 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Atchison County arrest records.
From the Jail to State Prison
A sentence of more than a year is served in state prison, not the jail; the Kansas Department of Corrections lists its inmates at doc.ks.gov/@@search?SearchableText=inmate+search.
Frequently Asked Questions
How do I find an inmate in Atchison County?
Look on the custody page of the Atchison County Sheriff's Office at atcosheriffks.org, or call 913.804.6100. It covers people booked into the county jail.
How many people are in the Atchison County jail?
About 72 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 73 beds.
What is the phone number for the Atchison County jail?
913.804.6100, the number on the page of the Atchison County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Atchison County go?
To a facility of the Kansas Department of Corrections; its inmate locator is at doc.ks.gov.
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.