Final answer:
The first permanent European settlement in the United States is St. Augustine, established by the Spanish in 1565, which makes it older than the English settlement at Jamestown established in 1607.
Step-by-step explanation:
The first permanent European settlement in the United States is c. St. Augustine. This settlement was established in 1565 by the Spanish and served as an outpost that was later developed into a fort. St. Augustine predates other European settlements such as the English Jamestown (established in 1607), Plymouth (established by the Pilgrims in 1620), and the infamous, but ill-fated Roanoke colony which was established in 1585 but had disappeared by the time a resupply ship returned.
While Jamestown holds the title of the first permanent English settlement in North America, St. Augustine's founding by the Spanish more than four decades earlier gives it the distinction of being the oldest continuously inhabited European-established settlement within the borders of the contemporary United States.