Some are named for Confederate political leaders and Spanish explorers, marking the influence of Spanish sovereignty, while others are named for Christian saints, Native American sites, as well as political leaders of the United States.

Natural features of the region, including rivers, lakes and flora, are also commonly used for county names.

[1] The Federal Information Processing Standard (FIPS) is used by the U.S. government to uniquely identify counties and is provided for each entry.

These codes link to the United States Census Bureau's "quick facts" for each county.

[6] Under the Florida Constitution the state government has the power to create and abolish counties.