Okay, I have already posted that it is twice the size of Key West, but maybe that is still hard to put into perspective. So, I will compare it in size to other famous islands. Using AskNumbers.com conversion table, I came up with the following:
Cayman Brac: 14 square miles =8,960 acres
Little Cayman: 10 square miles = 6,400 acres
St. Barts: 10 square miles = 6,400 acres
Virgin Gorda: 8 square miles = 5,120 acres
Basically, 11,000 acres is big enough for you to build your own town, or two!