Montana Judicial Districts: District Courts & Jurisdiction Map
Montana divides its trial court system into 22 judicial districts, each defined by statute and each carrying general jurisdiction over the civil and criminal matters arising within its geographic boundaries. This page explains how those districts are structured, what kinds of cases move through them, and where the lines between district court authority and other judicial bodies actually fall. Understanding the district map matters practically — the wrong court is a dismissed filing, a missed deadline, or a case that has to start over somewhere else.
Definition and scope
Montana operates a unified court system under Article VII of the Montana Constitution, which establishes the judiciary as a co-equal branch of government. At the trial court level, the district court is the court of general jurisdiction — meaning it handles felony criminal cases, civil disputes above a $15,000 threshold (per Montana Code Annotated § 3-5-302), domestic relations and family law matters, probate, and juvenile proceedings.
The state's 56 counties are distributed across 22 numbered judicial districts. Some districts contain a single county — the 1st District covers Lewis and Clark County alone, placing the state capital's courts in their own discrete jurisdiction. Others group smaller counties together: the 17th District, for example, combines Valley, Petroleum, and McCone counties, reflecting population density that would not justify three separate district court operations. Each district elects at least one district judge; larger districts elect multiple judges to manage caseload.
The Montana Supreme Court sits above the district courts as the court of last resort, handling appeals but not original trial proceedings (with narrow exceptions). Below district courts, justice of the peace courts and municipal courts handle lower-level civil disputes and misdemeanor matters, but those courts are creatures of local government and carry limited jurisdiction — they cannot hear felonies or major civil cases.
This page covers state district court jurisdiction within Montana's 56 counties. It does not address federal district courts — the U.S. District Court for the District of Montana is a separate federal institution with jurisdiction over federal questions, and its geographic scope does not map onto the state's 22 judicial districts. Tribal courts operating on Montana's seven federally recognized reservations hold sovereign jurisdiction within reservation boundaries that is largely outside the scope of state district courts, subject to specific federal statutes governing civil and criminal jurisdiction.
How it works
When a case is filed in a Montana district court, three questions determine which court has authority: subject matter jurisdiction, geographic venue, and whether the matter belongs in a specialized court.
Subject matter jurisdiction flows from statute. The district court can hear the case if it falls within the categories established by MCA § 3-5-302. Civil cases below $15,000 may belong in justice court instead. Felony charges belong exclusively in district court — no lower court can try a felony to verdict.
Venue is a separate question from jurisdiction. Even if a district court has subject matter jurisdiction, the case must be filed in the correct district. For most civil cases, venue lies in the county where the defendant resides or where the cause of action arose. For property disputes, venue is typically the district where the real property sits. Missoula County matters go to the 4th District; Gallatin County matters go to the 18th District; Yellowstone County, home to Billings and the state's largest city, sits in the 13th District, which also carries one of the heaviest civil and criminal dockets in Montana.
The numbered breakdown of districts and their county groupings:
- Districts 1–5: Cover the western and central counties including Lewis and Clark (1st), Silver Bow (2nd), Powell and Granite (3rd), Missoula (4th), and Madison, Jefferson, and Beaverhead (5th).
- Districts 6–11: Extend into north-central and Hi-Line counties — Cascade County (8th), Hill County (11th, covering Havre).
- Districts 12–16: Move east toward the High Plains, covering Custer, Rosebud, Dawson, and Richland counties.
- Districts 17–22: Cover the sparsely populated northeastern and southeastern reaches — the districts where a judge may preside over counties separated by hundreds of miles of open grassland.
Each district judge handles civil, criminal, juvenile, and probate matters unless the district has sufficient volume to permit informal specialization among multiple judges.
Common scenarios
The most frequent district court filings in Montana fall into four categories: felony criminal prosecution, dissolution of marriage and parenting plan disputes, civil tort and contract claims above the justice court threshold, and probate of estates.
A felony DUI — a fourth offense, which is a felony under MCA § 61-8-731 — goes to the district court of the county where the offense occurred. A commercial contract dispute between two Billings businesses valued at $200,000 lands in the 13th District in Yellowstone County. A rancher in Beaverhead County contesting a water rights determination goes to the 5th District, though Montana's statewide Water Court — a specialized unit — handles initial adjudication of water rights with district courts handling appeals from those determinations.
Domestic relations cases are among the highest-volume filings in larger districts. The 4th District in Missoula and the 18th District in Bozeman handle substantial family law caseloads reflecting the population growth those cities have experienced since 2010.
Decision boundaries
Not every dispute belongs in district court, and knowing the boundary matters as much as knowing what district courts do handle.
District court vs. justice court: Claims under $15,000 may proceed in justice of the peace court. Misdemeanor offenses not committed in an incorporated municipality typically go to justice court. District courts can review justice court decisions by trial de novo — essentially starting over, not reviewing a transcript.
District court vs. Water Court: The Montana Water Court, established under MCA § 3-7-201, holds exclusive original jurisdiction over the general adjudication of existing water rights. District courts handle individual water rights disputes that are not part of a general adjudication proceeding.
District court vs. federal court: Federal questions, diversity jurisdiction cases, and matters arising under federal law belong in federal court regardless of which Montana county is involved. State district courts cannot exercise jurisdiction over federal claims.
District court vs. tribal court: Within reservation boundaries, tribal courts exercise civil and criminal jurisdiction over tribal members and, in many circumstances, over matters involving non-members as well. The exact scope is governed by federal law — including the Major Crimes Act and Public Law 280 — not by Montana's 22-district structure.
For a broader orientation to how Montana's governmental institutions fit together, the Montana Government Authority covers the full architecture of state governance — executive agencies, legislative structure, constitutional offices, and the relationships among them — making it a useful companion to understanding where district courts sit within the larger structure. The Montana State Authority home provides the entry point to the full range of topics covered across Montana's public institutions.