This article is from the Puerto Rico FAQ, by Zeydy Ortiz Laureano firstname.lastname@example.org with numerous contributions by others.
Puerto Rico is a Caribbean Island located about a thousand miles
southeast of Miami between the Dominican Republic and the U. S. Virgin
Islands. It is roughly 100 by 35 miles with a population of about
3.8 million people. Puerto Rico is a territory of the United States
of America and we have common citizenship, currency and defense.
Although Puerto Ricans are U.S. citizens, residents of Puerto Rico do
not pay federal income tax (but neither can they vote in presidential
elections). Over 2 million Puerto Ricans live in the United States,
primarily in the northeast.