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 23, 2026 and October 2, 2026.
Mankato, Minnesota, in Blue Earth County, has about 46,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Mankato is held at the county jail, run by the Blue Earth 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 and common questions.
Related guides: Mankato public records, Blue Earth County inmate search, Mankato arrest records, Mankato warrants, Mankato criminal records, Mankato court records, Minnesota arrest records and Minnesota inmate search.
Finding Someone in Custody in Mankato
The county jail, run by the Blue Earth County Sheriff's Office, holds everyone kept in custody after an arrest in Mankato, from every agency.
SearchSystems opened and checked the jail page of the Blue Earth County Sheriff's Office at blueearthcountymn.gov/321/Jail (page title: Blue Earth County Jail | Blue Earth County, MN), a site that blocks automated checks (HTTP 429), so open it in a browser.
That page is the office's jail information page rather than a roster.
The Blue Earth County Jail by the Numbers
On an average day in 2021 the jail held about 78 people, down from about 110 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 132 beds, and it ran at 83 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Blue Earth County has about 71,000 residents (2024 Census Bureau estimate), so the jail holds about 11 people for every 10,000 residents.
Who Books People Into the Blue Earth County Jail
The Blue Earth County Sheriff's Office and the agency that reports for Mankato (filed by the FBI as Mankato Police Department) make the arrests that end in a booking in and around Mankato.
The FBI's agency list also places one more agency in Blue Earth County: the State Patrol at Mankato (state police).
The Minnesota Lake Police Department is listed by the FBI across two counties including Blue Earth County, so its arrests are not broken out for Blue Earth County here.
The largest arrest counts reported to the FBI were Mankato's 2,356 for 2025, the Blue Earth County Sheriff's Office's 677 for 2025 and Mapleton's 36 for 2025.
Together, the five agencies in Blue Earth County with all twelve months of 2025 on file reported 3,104 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 Mankato arrest records.
Frequently Asked Questions
How do I find an inmate in Mankato?
Ask the Blue Earth County Sheriff's Office; its jail page SearchSystems verified is at blueearthcountymn.gov/321/Jail.
How many people are in the Blue Earth County jail?
About 78 on an average day in 2021, the latest year in the Vera Institute's jail data, against a rated capacity of 132 beds.
Is this the official Mankato 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.