United States,

United States, when used in a geographic sense, means the 50 States and the District of Columbia, except as follows:
(1) For use in subpart 3.10, see the definition at 3.1001.
(2) For use in subpart 22.8, see the definition at 22.801.
(3) For use in subpart 22.10, see the definition at 22.1001.
(4) For use in subpart 22.13, see the definition at 22.1301.
(5) For use in subpart 22.16, see the definition at 22.1601.
(6) For use in subpart 22.17, see the definition at 22.1702.
(7) For use in subpart 22.18, see the definition at 22.1801.
(8) For use in subpart 22.19, see the definition at 22.1901.
(9) For use in subpart 23.1, see definition at 23.101.
(10) For use in part 25, see the definition at 25.003.
(11) For use in part 27, see the definition at 27.001.
(12) For use in subpart 47.4, see the definition at 47.401.

Source

48 CFR § 2.101

Scoping language

A word or a term, defined in this section, has the same meaning throughout this chapter (the Federal Acquisition Regulation (FAR)) unless the context in which the word or term is used clearly requires a different meaning or another FAR part, subpart, or section provides a different definition for the particular part or portion of the part. If a word or term that is defined in this section is defined differently in another part, subpart, or section of this chapter, the definition in this section includes a cross-reference to the other definitions and that part, subpart, or section applies to the word or term when used in that part, subpart, or section.