Good question. I live on what's commonly known as
Massachusetts. I'm hesitant to say I
live within the United States because I'm unsure which of the multiple definitions for "United States" applies. For example,
Title 26 §3121 defines it:
(e) State, United States, and citizen
For purposes of this chapter
(1) State
The term State includes the District of Columbia, the Commonwealth of Puerto Rico, the Virgin Islands, Guam, and American Samoa.
(2) United States
The term United States when used in a geographical sense includes the Commonwealth of Puerto Rico, the Virgin Islands, Guam, and American Samoa.
That's not me.