Ohio v. Kentucky
444 U.S. 335 · Decided January 21, 1980 · 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
Ohio v. Kentucky was decided on January 21, 1980 by a vote of 6–3. 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
- 444 U.S. 335 · 100 S. Ct. 588 · 62 L. Ed. 2d 530 · 1980 U.S. LEXIS 67
- Docket number
- 27 ORIG
- Decided
- January 21, 1980
- Argued
- December 3, 1979
- Court era
- Burger Court
- Decision type
- Opinion of the Court (orally argued)
- Outcome for petitioner
- The petitioning party received a favorable disposition
- Vote
- 6–3
- 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 Potter Stewart | Majority | |
| Justice Byron R. White | Dissent | |
| Justice Thurgood Marshall | Majority | |
| Chief Justice Warren E. Burger | Majority | |
| Justice Harry A. Blackmun | Majority | Wrote an opinion |
| Justice Lewis F. Powell Jr. | Dissent | Wrote an opinion |
| Justice William H. Rehnquist | Dissent | |
| Justice John Paul Stevens | Majority |
Full case caption
Ohio v. Kentucky
SCDB identifiers: case 1979-021, docket 1979-021-01.
Related decisions
Other cases on “Boundary dispute between states”
- California v. Nevada
- California v. Arizona
- Tennessee v. Arkansas
- New Hampshire v. Maine
- California v. Nevada
- 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