This community is currently known from Western New York within the Niagara Region, in central New York north of the Finger Lakes, and at scattered locations in the Hudson Valley. Calcareous talus slope woodlands are also known from the Adirondack Mountains within the Eastern Adirondack Low Mountains (Lake George Valley) and in the limestone region of Lewis County. Additional occurrences may be located elsewhere in the state where the bedrock is calcareous.

The range of this physically broadly-defined community is probably global, but limited to mountainous areas with calcareous bedrock. Examples with the greatest biotic affinities to New York occurrences are suspected to span north to southern Canada, west to Ohio and Kentucky, southwest to Tennessee, and east to western New England.