Originally a part of the old town of Painted Post, Addison was organized as Middletown at the time of Steuben County's creation in March 1796.

Former NY Route 432, now County Road 119, is an east-west highway through the town.

The Canisteo River flows through the southern part of the town.

Goodhue Creek flows into the river near the eastern town boundary.

25.7% of all households were made up of individuals, and 12.1% had someone living alone who was 65 years of age or older.

Media related to Addison, New York at Wikimedia Commons