Rural Area
Rural Area is a political subdivision or unincorporated area in a non-metropolitan county (as defined by the Department of Agriculture), or, if in a metropolitan county, any such subdivision or area with a resident population under 20,000 which is designated by SBA as rural.
Source
13 CFR § 120.10
Scoping language
The following terms have the same meaning wherever they are used in this part. Defined terms are capitalized wherever they appear.