Johnsburg is a town in the northwestern corner of Warren County, New York, United States.

[3] The town is named after John Thurman,[4][5] an early settler and founder.

The northern and western town lines are the border of Hamilton County.

27.8% of all households were made up of individuals, and 13.4% had someone living alone who was 65 years of age or older.

[11] Jeanne Robert Foster, the poet, model, war correspondent and editor grew up in Johnsburg.