Montana: 287(g) agreements, detention facilities and where to request records
Each entry below appears on a list ICE publishes, and each links to that public body's own records request page or, where it has none, the route it posts. Where neither was found, the entry says so and links the page that was checked. A privately run or federal facility links a federal agency's FOIA page and, where one is named, the county that contracts for it. Section 287(g) of the Immigration and Nationality Act authorizes these agreements. Being listed says nothing about how an agreement is carried out. ICE's lists are the source for every entry; they can lag, contain errors, and drop agreements without notice, so confirm with the agency before relying on an entry.
On this page: 287(g) agencies, 8 of 8 request pages checked · Detention facilities, 1 of 1 checked
Police, sheriffs and other agencies with 287(g) agreements
ICE's list of 287(g) participating agencies (ICE's spreadsheet file name dated October 9, 2026; page updated October 13, 2026). ICE uses three models. In ICE's words, Warrant Service Officer “allows designated immigration officers to serve and execute administrative warrants on aliens in their custody”; Task Force is described as “allowing designated immigration officers to enforce limited immigration authority while performing routine police duties or as an active participant in an ICE-led task force”; Jail Enforcement “allows designated immigration officers to identify and process removable aliens who have pending or active criminal charges.” None in Montana: Jail Enforcement. Ask for the agency's own records (agreements, approvals, invoices, policies). Records ICE holds are requested from ICE (ICE FOIA page).
| Agency | ICE lists | Request records from | Request page checked |
|---|---|---|---|
| Carter County Sheriff's OfficeCarter County | Task Force, signed Apr 9, 2026 · agreement | No dedicated records request page found Carter County Sheriff Office pageNo records request route was found on the Sheriff Office page. The page lists Sheriff hours Monday through Friday 8:00am-5:00pm. The address and phone line at the foot of the page, PO Box 315, 214 Park Street, Ekalaka, (406) 775-8749, is the county's line and is not labeled as the Sheriff's. | 2026-10-14 |
| Flathead County Sheriff's OfficeFlathead County | Warrant Service Officer, signed Feb 12, 2020 · agreement | Flathead County policies page with public information request linkThe county page says that for public records not listed there, use the public information request link, Submit a Public Information Request (a NextRequest portal that refused a script read). The page is county-wide and does not say whether Sheriff's Office records go through it. The Sheriff's Office page gives 920 South Main Street Suite 100, Kalispell, (406) 758-5585. | 2026-10-14 |
| Gallatin County Sheriff's OfficeGallatin County | Warrant Service Officer, signed Jan 22, 2020 · agreement | Gallatin County Public Records pageThe page says that for records from the Gallatin County Sheriff's Office, Gallatin County 911, or Bozeman Police Departments, use the form it links. Gallatin County is at 311 West Main Street, Bozeman. | 2026-10-14 |
| Garfield County Sheriff's OfficeGarfield County | Task Force, signed Aug 28, 2025 · agreement | No dedicated records request page found Garfield County Department Contacts pageNo records request route was found on the county home page or Department Contacts page. The Department Contacts page lists the Sheriff/Coroner at 352 Leavitt Ave, Jordan; the home page gives the county phone (406) 557-2760. | 2026-10-14 |
| Golden Valley County Sheriff's OfficeGolden Valley | Task Force, signed Sep 15, 2026 · agreement: ICE lists “link pending” | No dedicated records request page found Golden Valley County Sheriff's Office websiteNo records request route was found on the Sheriff's Office website home page or the county's Sheriff page. The Sheriff's Office website gives 103 1st Ave, Ryegate, (406)-568-2321. | 2026-10-14 |
| Montana Department of CorrectionsLewis and Clark County | Warrant Service Officer, signed Aug 25, 2026 · agreement: ICE lists “link pending” | Montana Office of Public Information Requests (OPIR) pageThe Department's Contact Us page says: "For public information requests, visit: OPIR.mt.gov". The OPIR page lists the Department of Corrections among the agencies it supports and links its request portal (Submit Public Records Request). The OPIR page says a request about your own personal or property records should be made directly to the agency that keeps the record, and that a request for information about someone other than yourself goes through OPIR's process. The Department's central office is at 5 S. Last Chance Gulch, Helena, (406) 444-3930. | 2026-10-14 |
| Montana Department of JusticeICE's list gives no county. | Task Force, signed Mar 5, 2025 · agreement | Montana Department of Justice Public Records Requests pageAll requests must go through the Department's online Public Records Request Submissions application, signed in with a Montana.gov user account, one request per form; the page says requests sent by email, phone, mail, fax or in person are not accepted. The records custodian responds within 5 business days, then sends a cost estimate; a single readily identifiable record carries no cost. | 2026-10-14 |
| Treasure County Sheriff's OfficeTreasure County | Task Force, signed Mar 11, 2026 · agreement: ICE lists “link pending” | Treasure County Sheriff's Office pageThe page says records requests can be made by mail or email, addressed "ATTN: Records Request" to Treasure County Sheriff's Office, PO Box 1511, Hysham MT 59038. It lists a minimum fee of $5.00 per case number (the first $5.00 covers up to 6 pages, then $1.00 per additional page), an additional $10.00 if redactions are necessary, and a minimum of $10.00 per GB for photos or videos. The office is at 307 Rapelje Ave., Hysham, 406-342-5211. | 2026-10-14 |
Facilities ICE lists for detention in Montana
ICE's detention facility list (page updated March 23, 2026), matched against ICE's detention statistics (data pulled July 9, 2026). ICE's statistics include only facilities with at least one person in custody when the data were pulled, and leave out hold, hospital, juvenile, MIRP and ORR facilities (ICE's note on the sheet). A facility may have started or stopped holding people for ICE since those dates.
| Facility | ICE lists | Request records from | Request page checked |
|---|---|---|---|
| CASCADE COUNTY JAIL, MTGreat Falls | ICE's detention statistics list it as USMS IGA (USMS Intergovernmental Agreement). No matching entry on ICE's facility locator (updated March 23, 2026). | No dedicated records request page found Cascade County Sheriff's Office pageNo records request page was found on the county's site. The Sheriff's page has a Records section and a records fee schedule, and links a Request for Report form; it gives the Cascade County Detention Facility at 3800 Ulm North Frontage Road, Great Falls, phone 406-454-6820. | 2026-10-14 |
The signed agreement and any amendments; county board or council approvals; invoices and payments to and from ICE; written policies on ICE holds and warrants; and any counts the agency itself keeps of ICE holds or warrants served. Ask for records the agency itself made or keeps.
- ICE, 287(g) participating agencies list (participatingAgencies10092026b.xlsx, posted with the page “Updated: 10/13/2026”), ice.gov/identify-and-arrest/287g. Checked October 13, 2026.
- ICE, Detention Facilities (page “Updated: 03/23/2026”), ice.gov/detention-facilities. Checked October 13, 2026.
- ICE, detention statistics, Facilities FY26 sheet (FY26_detentionStats07202026.xlsx, data pulled July 9, 2026), ice.gov/detain/detention-management. Checked October 13, 2026.
- Each public body's own records request page or posted route, or the page checked where none was found, linked above. Checked on the date shown in each row.
- Reporters Committee for Freedom of the Press, Open Government Guide: Montana.
Each row shows when its request page was last checked. We aim to recheck ICE's lists weekly and local pages monthly. Agreements can begin or end between checks. Agencies and facilities no longer on ICE's lists move to a dated “No longer listed” note. ICE's lists can drop or omit entries, so a missing entry does not show that an agreement ended. Spot an error? Corrections.