Hardenburgh is a town located in the western part of Ulster County, New York, United States.

[5] The ordination movement, which included some subsistence farmers and loggers, were angered at the tax burden that fell on them, which was high because of the thousands of acres of land within the town owned by tax-exempt religious and civil organizations (including the Zen Buddhists' Dai Bosatsu Zendo, the Nassau County Boy Scouts, the Catskill Center for Conservation and Development, and a group of Tibetan monks).

[6] Ultimately, in 1982, the New York State Court of Appeals held that Hardenburgh's "mail-order ministers" were not entitled to exemptions from property tax unless the land was exclusively for church use.

[7] The Balsam Lake Mountain Fire Observation Station, Coykendall Lodge, and Grant Mills Covered Bridge are listed on the National Register of Historic Places.

[9] A 1907 work described Hardenburgh as having "some of the most rugged and austere natural features" in the county, with a rocky, stony topography ill-suited for agriculture.

[10] The landscape is characterized by mountain crags with occasional valley and forestland, and various lakes, streams, and glens.

The portion north of it, in the Dry Brook valley, uses the ZIP code and telephone exchange of the nearby Delaware County hamlet of Arkville.