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Blaine County Justice Court

Filing information for Blaine County Justice Court in Chinook, MT. Part of the Blaine County small claims court system.

E-Filing

Not available

Max Claim

$7,000

Courthouse Details

Blaine County Justice Court

420 Ohio Street

Chinook, MT 59523

Mailing Address

PO Box 1266

Chinook, MT 59523

Phone: (406) 357-2335Fax: (406) 357-2361

Hours: Clerk's Office: 8:00 a.m. - 5:00 p.m. Monday - Friday

Area Served

Blaine County

How to File at Blaine County Justice Court

File in person

Bring your completed forms to the courthouse during business hours.

File by mail

Most small claims courts accept filing by mail — check with this court first. Typically you mail your completed forms with the filing fee plus a self-addressed stamped envelope for your returned copies.

Ready to take action?

A demand letter often settles disputes before a case is ever filed — and it only takes a few minutes.

Read the demand letter guide

For statewide rules, see the full Montana small claims court guide →

Data verified May 6, 2026.