Gilchrist County is a county located in the north central part of the U.S. state of Florida. Organized in 1925 from the western part of Alachua, it is the last county to be formed in the state. As of the 2020 census, the population was 17,864. The county seat is Trenton.

Alachua County is a county in the north central portion of the U.S. state of Florida. As of the 2020 census, the population was 278,468. The county seat is Gainesville, the home of the University of Florida since 1906, when the campus opened with 106 students.