ESLPod Blog: Where exactly is the United States of America?
On Cafe #163, I said that the area known as the Florida Keys (which includes the city of Key West) was the “southernmost” point in the United States (that is, the place that is farthest to the south). Wolfgang, a listener from Germany, pointed out to me that this is not completely correct. The Florida Keys are southernmost in the continental United States...
Wikipedia: Extreme points of the United States
This is a list of the extreme points of the United States, the points that are farther north, south, east, or west than any other location in the country. Also included are extreme points in elevation.