Explore the map of Florida, a state known as the Sunshine state, located in the southeastern region of the United States. Florida covers an area of 65,755 square miles which makes it the 22nd largest state in the country. The population of Florida is over 21 million, making it the third most populous state in the US, after California and Texas. Jacksonville is the largest city in Florida by sheer size. Jacksonville is also the largest city (in terms of area) in the United States. The Miami metropolitan area is Florida's most populated city. Tallahassee is the state capital.