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 September 25, 2026.
Lockport, New York, in Niagara County, has about 20,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Lockport is held at the county jail, run by the Niagara 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: Lockport public records, Niagara County inmate search, Lockport arrest records, Lockport warrants, Lockport criminal records, Lockport court records, New York arrest records and New York inmate search.
Finding Someone in Custody in Lockport
The county jail, run by the Niagara County Sheriff's Office, holds everyone kept in custody after an arrest in Lockport, from every agency.
SearchSystems opened and checked the jail page of the Niagara County Sheriff's Office at niagarasheriff.gov (page title: Niagara County Sheriff's Office), which answered when SearchSystems opened it on September 23, 2026.
That page is the office's jail information page rather than a roster.
The Niagara County Jail by the Numbers
So far in 2026 the jail has held about 400 people on an average day, up from about 350 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 505 beds, and it ran at 69 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Niagara County has about 210,000 residents (2024 Census Bureau estimate), so the jail holds about 19 people for every 10,000 residents.
Who Books People Into the Niagara County Jail
The Niagara County Sheriff's Office and the agency that reports for Lockport (filed by the FBI as Lockport Police Department) make the arrests that end in a booking in and around Lockport.
The largest arrest counts reported to the FBI were Niagara Falls's 1,151 for 2025, the Niagara County Sheriff's Office's 597 for 2025 and North Tonawanda's 596 for 2025.
Together, the eight agencies in Niagara County with all twelve months of 2025 on file reported 2,830 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 Lockport 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 Niagara County serves the sentence in a facility of the New York State Department of Corrections and Community Supervision, whose inmate locator is at nysdoccslookup.doccs.ny.gov.
Frequently Asked Questions
How do I find an inmate in Lockport?
Ask the Niagara County Sheriff's Office; its jail page SearchSystems verified is at niagarasheriff.gov.
How many people are in the Niagara County jail?
About 400 on an average day so far in 2026, against a rated capacity of 505 beds.
Where do people sentenced to prison in Niagara 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 Lockport 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.