Puerto Rico is not a state. It is a US unincorporated territory, which is located in the northeastern Caribbean. It includes the main island of Puerto Rico and a number of smaller islands. It is in the west of both the British Virgin Islands and United States Virgin Islands.http://en.wikipedia.org/wiki/Puerto_Rico.
No it is not a state. Unfortunately the average American does not know the names or locations of the Territories and associated free states that are part of the United States whose people are US citizens. Someone might want to ask that question.