Junius is a town in Seneca County, New York, United States.

[4] The Town of Junius is in the northwest corner of the county and is east of Geneva, New York.

The primary postal district covering much of the area is ZIP Code 14433 for Clyde.

[9] Junius was part of the Central New York Military Tract used to pay soldiers of the American Revolution.

New York State Route 318 is an east-west highway in the town running parallel to the Thruway.

New York State Route 414 is a north-south highway crossing a few arces in the far north-eastern part of Junius.

21.5% of all households were made up of individuals, and 7.0% had someone living alone who was 65 years of age or older.