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 October 2, 2026.
Belknap County, New Hampshire, has about 65,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Belknap County is held at the county jail, run by the Belknap 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: Belknap County public records, Belknap County arrest records, Belknap County warrants, Belknap County police reports, Belknap County property records, New Hampshire arrest records and New Hampshire inmate search.
Finding Someone in Custody in Belknap County
The county jail, run by the Belknap County Sheriff's Office, holds everyone kept in custody after an arrest in Belknap County, from every agency.
SearchSystems opened and checked the jail page of the Belknap County Sheriff's Office at belknapcounty.gov/212/Sheriff (page title: Sheriff | Belknap County, NH), phone 603-527-5454, 42 County Dr Laconia, NH 03246, which answered when SearchSystems opened it on September 24, 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 603-527-5454.
The Belknap County Jail by the Numbers
On an average day in 2023 the jail held about 91 people, down from about 93 in 2019. Its rated capacity in 2023 was 144 beds, and it ran at 63 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Belknap County has about 65,000 residents (2024 Census Bureau estimate), so the jail holds about 14 people for every 10,000 residents.
Who Books People Into the Belknap County Jail
The Belknap County Sheriff's Office and the agency that reports for Laconia make the arrests that end in a booking in Belknap County.
The FBI's agency list also places one more agency in Belknap County: the Belknap County State Police (state police).
The largest arrest counts reported to the FBI were Laconia's 1,093 for 2025, Gilford's 602 for 2025 and the Belknap County Sheriff's Office's 390 for 2025.
Together, the 12 agencies in Belknap County with all twelve months of 2025 on file reported 3,111 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 Belknap 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 Belknap County serves the sentence in a facility of the New Hampshire Department of Corrections, whose inmate locator is at business.nh.gov/inmate_locator.
Frequently Asked Questions
How do I find an inmate in Belknap County?
Ask the Belknap County Sheriff's Office at 603-527-5454; its jail page SearchSystems verified is at belknapcounty.gov/212/Sheriff.
How many people are in the Belknap County jail?
About 91 on an average day in 2023, the latest year in the Vera Institute's jail data, against a rated capacity of 144 beds.
What is the phone number for the Belknap County jail?
603-527-5454, the number on the page of the Belknap County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Belknap County go?
To a facility of the New Hampshire Department of Corrections; its inmate locator is at business.nh.gov/inmate_locator.
Is this the official Belknap 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.