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 4, 2026.
Greenfield, Massachusetts, in Franklin County, has about 18,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Greenfield is held at the county jail, run by the Franklin County Sheriff’s Office - MA POST Commission, 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: Greenfield public records, Franklin County inmate search, Greenfield arrest records, Greenfield warrants, Greenfield criminal records, Greenfield court records, Massachusetts arrest records and Massachusetts inmate search.
Finding Someone in Custody in Greenfield
The county jail, run by the Franklin County Sheriff’s Office - MA POST Commission, holds everyone kept in custody after an arrest in Greenfield, from every agency.
SearchSystems opened and checked the jail page of the Franklin County Sheriff’s Office - MA POST Commission at mapostcommission.gov/current-agency/franklin-county-sheriffs-office (page title: Franklin County Sheriff’s Office | MA POST Commission), 84 State Street, 2nd Floor, Boston, MA 02109, which answered when SearchSystems opened it on October 4, 2026.
That page is the office's jail information page rather than a roster.
The Franklin County Jail by the Numbers
On an average day in 2025 the jail held about 190 people, down from about 200 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 334 beds, and it ran at 61 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Franklin County has about 71,000 residents (2024 Census Bureau estimate), so the jail holds about 26 people for every 10,000 residents.
Who Books People Into the Franklin County Jail
The Franklin County Sheriff’s Office - MA POST Commission and the agency that reports for Greenfield (filed by the FBI as Greenfield Police Department) make the arrests that end in a booking in and around Greenfield.
The FBI's agency list also places these agencies in Franklin County: Greenfield Community College (campus police); the Franklin County State Police (state police).
The largest arrest counts reported to the FBI were Conway's 1,188 for 2025, New Salem's 1,188 for 2025 and Charlemont's 1,188 for 2025.
Together, the 18 agencies in Franklin County with all twelve months of 2025 on file reported 4,296 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 Greenfield 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 Franklin County serves the sentence in a facility of the Massachusetts Department of Correction, whose inmate locator is at mass.gov/how-to/find-someone-housed-in-a-massachusetts-prison.
Frequently Asked Questions
How do I find an inmate in Greenfield?
Ask the Franklin County Sheriff’s Office - MA POST Commission; its jail page SearchSystems verified is at mapostcommission.gov.
How many people are in the Franklin County jail?
About 190 on an average day in 2025, the latest year in the Vera Institute's jail data, against a rated capacity of 334 beds.
Where do people sentenced to prison in Franklin County go?
To a facility of the Massachusetts Department of Correction; its inmate locator is at mass.gov.
Is this the official Greenfield 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.