State of Montana v. State of Wyoming and State of North Dakota
563 U.S. 368 · Decided May 2, 2011 · Supreme Court of the United States
At a glance
State of Montana v. State of Wyoming and State of North Dakota was decided on May 2, 2011 by a vote of 7–1. SCDB codes the disposition as “petition denied or appeal dismissed.” Justice Clarence Thomas wrote the opinion of the Court. SCDB classifies its main issue as “Non-real property dispute between states” in the Interstate Relations area.
Read the opinion
Case details
- Citations
- 563 U.S. 368 · 131 S. Ct. 1765 · 179 L. Ed. 2d 799 · 2011 U.S. LEXIS 3369
- Docket number
- 137, Orig.
- Decided
- May 2, 2011
- Argued
- January 10, 2011
- Court era
- Roberts Court
- Decision type
- Opinion of the Court (orally argued)
- Disposition
- Petition denied or appeal dismissed
- Outcome for petitioner
- The petitioning party did not receive a favorable disposition
- Vote
- 7–1
- Majority opinion
- Clarence Thomas
- Opinion assigned by
- John G. Roberts Jr.
- How the case arrived
- Original jurisdiction
- Issue (SCDB)
- Non-real property dispute between states
- Issue area
- Interstate Relations
- Type of law
- No legal provision
- Decision direction (SCDB)
- Unspecifiable what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice Antonin Scalia | Dissent | Wrote an opinion |
| Justice Anthony M. Kennedy | Majority | |
| Justice Clarence Thomas | Majority | Wrote an opinion |
| Justice Ruth Bader Ginsburg | Majority | |
| Justice Stephen G. Breyer | Majority | |
| Chief Justice John G. Roberts Jr. | Majority | |
| Justice Samuel A. Alito Jr. | Majority | |
| Justice Sonia Sotomayor | Majority |
Did not participate: Elena Kagan.
Full case caption
State of Montana, Plaintiff v. State of Wyoming and State of North Dakota
SCDB identifiers: case 2010-039, docket 2010-039-01.
Related decisions
Other cases on “Non-real property dispute between states”
- State of South Carolina v. State of North Carolina
- State of Kansas v. State of Colorado
- State of Montana v. State of Wyoming and State of North Dakota
- State of Arizona v. State of California
- State of Kansas v. State of Colorado
- Florida v. Georgia
Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error