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 23, 2026.
Herkimer County, New York, has about 60,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Herkimer County is held at the county jail, run by the Herkimer 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: Herkimer County public records, Herkimer County arrest records, Herkimer County warrants, Herkimer County criminal records, Herkimer County court records, New York arrest records and New York inmate search.
Finding Someone in Custody in Herkimer County
The county jail, run by the Herkimer County Sheriff's Office, holds everyone kept in custody after an arrest in Herkimer County, from every agency.
SearchSystems opened and checked the jail page of the Herkimer County Sheriff's Office at herkimercountyny.gov/government/sheriffs-office (page title: Sheriff's Office | Herkimer County, NY), phone 315-867-1167, 711 Middleville Rd., Herkimer, NY 13350, THURSDAY SEPTEMBER 10TH, 2026 FROM 12pm until 4pm., which answered when SearchSystems opened it on September 23, 2026.
That page is the office's jail information page rather than a roster, so a search for a particular person goes through the office at 315-867-1167.
The Herkimer County Jail by the Numbers
So far in 2026 the jail has held about 82 people on an average day, up from about 23 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 19 beds, and it ran at 117 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Herkimer County has about 60,000 residents (2024 Census Bureau estimate), so the jail holds about 14 people for every 10,000 residents.
Who Books People Into the Herkimer County Jail
The Herkimer County Sheriff's Office and the agencies that report for Herkimer, Little Falls, Mohawk, Frankfort (village), Frankfort (town) and Dolgeville make the arrests that end in a booking in Herkimer County.
The largest arrest counts reported to the FBI were Herkimer's 520 for 2025, Ilion Village's 304 for 2025 and Frankfort (town)'s 112 for 2025.
Together, the five agencies in Herkimer County with all twelve months of 2025 on file reported 1,006 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 Herkimer 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 New York State Department of Corrections and Community Supervision lists its inmates at nysdoccslookup.doccs.ny.gov.
Frequently Asked Questions
How do I find an inmate in Herkimer County?
Ask the Herkimer County Sheriff's Office at 315-867-1167; its jail page SearchSystems verified is at herkimercountyny.gov.
How many people are in the Herkimer County jail?
About 82 on an average day so far in 2026, against a rated capacity of 19 beds.
What is the phone number for the Herkimer County jail?
315-867-1167, the number on the page of the Herkimer County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Herkimer County go?
To a facility of the New York State Department of Corrections and Community Supervision; its inmate locator is at nysdoccslookup.doccs.ny.gov.
Is this the official Herkimer 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.