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|Territory: March 30, 1821|
|Statehood: March 3, 1845|
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Today’s Florida counties did not always exist in the present form. They went through many different changes in the space of a few short years.
Florida Territorial Counties
All of the other counties were created from these two original Florida counties.
The State of Florida entered the union as the 27th state on March 3, 1845.
Florida Counties Today
lorida’s counties are subdivisions of the state government. In 1968, counties gained the power to develop their own charters.
Fun Facts about Florida Counties
Counties by Year
- Escambia and St. Johns Counties was the original 2 counties created on July 21, 1821.
- Gilchrist County was the last county created on December 4, 1925.
County Size Facts
- Palm Beach County (2,034 sq mi) is the largest county in Florida.
- Union County (240 sq mi) is the smallest county in Florida.
County Population Facts
The average population of Florida’s counties is 280,616
- Liberty County (8,314) is the least populated county in Florida.
- Miami-Dade County (2,662,874) is the most populated county in Florida.
Florida City Facts
Florida’s 10 largest cities (2016 est.) are:
- Jacksonville (842,583) is in Duval County
- Miami (453,579) is in Miami-Dade County
- Tampa (352,957) is in Hillsborough County
- Orlando (277,173) is in Orange County
- St. Petersburg (260,999) is in Pinellas County
- Hialeah (236,387) is in Miami-Dade County
- Tallahassee (190,894) is in Leon County
- Cape Coral (179,804) is in Lee County
- Fort Lauderdale (172,389) is in Broward County
- Port Saint Lucie (171,016) is in St. Lucie County
Boundary Changes of Florida Counties from 1821-1997
This Interactive Map of Florida Counties show the historical boundaries, names, organization, and attachments of every county, extinct county and unsuccessful county proposal from 1821 to 1997.
List of Florida Counties
|County||Created||Created From||Named For||County Seat||Notes|
List of Old Former / Extinct Florida Counties
Florida contains some counties that no longer exist because they were discontinued, renamed or merged with another county. These are important for genealogy research purposes.
The below counties formerly within the area of the State of Florida no longer exist:
Benton County, Florida
Bloxham County, (Proposed) Florida
Was proposed to be named in honor of William D. Bloxham (1835–1911), 13th and 17th governor of Florida.
It was dependent on local referendum that failed.
Dade County, Florida
On January 7, 1851, Dade County no longer fully organized and attached to Monroe County for administrative and judicial purposes.
In 1872, Dade County was fully organized and detached from Monroe County.
On November 13, 1997, Dade County was renamed to Miami-Dade County.
Leigh Read County, (Proposed) Florida
In 1841, legislation was introduced and passed to rename Mosquito County to “Leigh Read County”. However the governor did not sign the bill within the legal time, so the renaming did not take place.
Was proposed to be named in honor of General and Legislator Leigh Read following his assassination.
Fayette County, Florida
Created on February 9, 1832 from Jackson County by Florida Territory. The with county seat was at Ochesee.
On February 1, 1834, Fayette County merged back into Jackson County.
Hernando County, Florida
Created on February 24, 1843 from Alachua County by Florida Territory.
Miami County, (Proposed) Florida
In 1947, Proposed to create Miami County from Dade County. Creation never occured.
Mosquito County, Florida
Created on December 29, 1824 from St. Johns County by Florida Territory. The County name was taken from the name the Spanish had given the entire coast, “Los Mosquitos”.
On January 30, 1845, Mosquito County was renamed to Orange County.
New River County, Florida
Created in February 1859 from Columbia County by Florida Territory. The County name was taken from the name the Spanish had given the entire coast, “Los Mosquitos”.
On December 6, 1861, New River County was renamed to Bradford County.
Ocean County, (Proposed) Florida
In the early 1990s the four beach cities, Jacksonville Beach, Neptune Beach, Atlantic Beach, and Mayport considered separating from Duval and forming Ocean County, an idea that had been discussed since consolidation, but after the 1995 the idea was dropped.
St. Lucie County, Florida
Created on March 14, 1844 from Mosquito and Hillsborough counties by Florida Territory. The County name was taken from the name the Spanish had given the entire coast, “Los Mosquitos”.
On January 6, 1855, St. Lucie County was renamed to Brevard County.