Gilchrist County is a county located in the U.S. state of Florida. Its county seat is Trenton, Florida. Gilchrist County was created in 1925 making it the youngest county in Florida. It was named for Albert W. Gilchrist, Governor of Florida from 1909 to 1913. Gilchrist County is part of the Gainesville Metropolitan Statistical Area. Gilchrist County has a total area of approximately 355 square miles of which 98% is land and 2% water. As of the 2000 census, there were 14,437 people, 5,021 households, and 3,715 families residing in Gilchrist County, FL.