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.
Cass County, Nebraska, has about 27,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Cass County is held at the county jail, run by the Cass 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: Cass County public records, Cass County arrest records, Cass County warrants, Cass County criminal records, Cass County court records, Nebraska arrest records and Nebraska inmate search.
Finding Someone in Custody in Cass County
A person kept in custody after an arrest in Cass County is held at the county jail, run by the Cass County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the custody page of the Cass County Sheriff's Office at casscountysheriffne.gov/inmate-roster/search (page title: Inmate Roster | Cass County NE Sheriff's Office | Searching | Sort Booking Time | Descending | Page 1), phone 800.527.3699, which answered when SearchSystems opened it on September 24, 2026.
Someone booked recently shows on that page; someone cited and released at the scene, or held a few hours at a city station, does not.
The Cass County Jail by the Numbers
On an average day in 2019 the jail held about 84 people. Its rated capacity in 2019 was 114 beds, and it ran at 74 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Cass County has about 27,000 residents (2024 Census Bureau estimate), so the jail holds about 31 people for every 10,000 residents.
Who Books People Into the Cass County Jail
The Cass County Sheriff's Office and the agency that reports for Plattsmouth make the arrests that end in a booking in Cass County.
The FBI's agency list also places one more agency in Cass County: the State Patrol in Cass County (state police).
The largest arrest counts reported to the FBI were the Cass County Sheriff's Office's 235 for 2025 and Plattsmouth's 132 for 2025.
Together, the two agencies in Cass County with all twelve months of 2025 on file reported 367 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 Cass County arrest records.
From the Jail to State Prison
The jail holds people awaiting trial and people serving short sentences. A person sentenced to prison in Cass County serves the sentence in a facility of the Nebraska Department of Correctional Services, whose inmate locator is at dcs-inmatesearch.ne.gov/Corrections/COR_input.jsp.
Frequently Asked Questions
How do I find an inmate in Cass County?
Look on the custody page of the Cass County Sheriff's Office at casscountysheriffne.gov/inmate-roster/search, or call 800.527.3699. It covers people booked into the county jail.
How many people are in the Cass County jail?
About 84 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 114 beds.
What is the phone number for the Cass County jail?
800.527.3699, the number on the page of the Cass County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Cass County go?
To a facility of the Nebraska Department of Correctional Services; its inmate locator is at dcs-inmatesearch.ne.gov.
Is this the official Cass 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.