Are the Florida Keys an Archipelago?

Yes. The Florida Keys are a classic archipelago—a chain of ~1,700 islands, cays, and islets extending from Key Biscayne (near Miami) to Key West (90 miles from Cuba).

They are the exposed remnants of a Pleistocene coral reef, connected by the Overseas Highway (US-1) and 42 bridges (including the 7-mile Bridge). Only ~30 are inhabited.