Yes, the term ‘United States’ is a proper noun. Proper nouns refer to specific names of people, places, organizations, or sometimes things, distinguishing them from common nouns.
In this case, ‘United States’ identifies a specific country rather than describing a general concept of a nation. This distinction is crucial in writing, as proper nouns are typically capitalized to denote their significance. For example, when you say ‘I live in the United States,’ you are referring to a specific entity, which is why it is categorized as a proper noun.