Louisiana v. Mississippi
466 U.S. 96 · Decided April 2, 1984 · Supreme Court of the United States
Record summary. This page is generated from the Supreme Court Database’s coded data about the case. It describes who decided what, not the Court’s reasoning. Read the opinion itself before relying on it. Not legal advice.
At a glance
Louisiana v. Mississippi was decided on April 2, 1984 unanimously (9–0). Justice Harry A. Blackmun wrote the opinion of the Court. SCDB classifies its main issue as “Boundary dispute between states” in the Interstate Relations area.
Read the opinion
Case details
- Citations
- 466 U.S. 96 · 104 S. Ct. 1645 · 80 L. Ed. 2d 74 · 1984 U.S. LEXIS 52
- Docket number
- 86 ORIG
- Decided
- April 2, 1984
- Argued
- January 16, 1984
- Court era
- Burger Court
- Decision type
- Opinion of the Court (orally argued)
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 9–0 (unanimous)
- Majority opinion
- Harry A. Blackmun
- Opinion assigned by
- Warren E. Burger
- How the case arrived
- Original jurisdiction
- Issue (SCDB)
- Boundary dispute between states
- Issue area
- Interstate Relations
- Decision direction (SCDB)
- Unspecifiable what this means
How the Justices voted
| Justice | Vote | Separate writing |
|---|---|---|
| Justice William J. Brennan Jr. | Majority | |
| Justice Byron R. White | Majority | |
| Justice Thurgood Marshall | Majority | |
| Chief Justice Warren E. Burger | Majority | |
| Justice Harry A. Blackmun | Majority | Wrote an opinion |
| Justice Lewis F. Powell Jr. | Majority | |
| Justice William H. Rehnquist | Majority | |
| Justice John Paul Stevens | Majority | |
| Justice Sandra Day O'Connor | Majority |
Full case caption
Louisiana v. Mississippi et al.
SCDB identifiers: case 1983-063, docket 1983-063-01.
Related decisions
Other cases on “Boundary dispute between states”
- State of Ohio v. Commonwealth of Kentucky on Bill of Complaint
- Arkansas v. Mississippi
- Oklahoma v. Arkansas
- Kentucky v. Indiana
- South Dakota v. Nebraska
- Texas v. Oklahoma
Same Term, same area (Interstate Relations)
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