Christmas is a census-designated place and an unincorporated area in Orange County, Florida, United States. It is part of the Orlando–Kissimmee Metropolitan Statistical Area. The population was 1,146 at the 2010 census.Christmas is home to the world's largest alligator-shaped building, measuring at just over 200 feet (61 m), to Fort Christmas Historical Park, a recreation of the Second Seminole War Fort Christmas and to Fort Christmas Folk School, a nonprofit school dedicated to teaching folk arts. Every year, Christmas sends a large amount of mail from its post office from people who mail letters from the town so they can have the "Christmas" postmark on their holiday mailings.On December 25, 1837, a force of 2,000 U.S. Army soldiers and Alabama Volunteers arrived in the area to construct a fort, which they named Fort Christmas. The fort was one of over 200 forts built during the Second Seminole War.