36 CFR § 13.430 - Determination of resident zones.
(a) A resident zone shall include -
(1) The area within a national park or monument; and
(2) The communities and areas near a national park or monument which contain significant concentrations of rural residents who, without using aircraft as a means of access for purposes of taking fish or wildlife for subsistence uses (except in extraordinary cases where no reasonable alternative existed), have customarily and traditionally engaged in subsistence uses within a national park or monument. For purposes of determining “significant” concentrations, family members shall also be included.
(b) After notice and comment, including public hearing in the affected local vicinity, a community or area near a national park or monument may be -
(1) Added to a resident zone; or
(c) For purposes of this section, the term “family” shall mean all persons living within a rural resident's household on a permanent basis.