Clay County is located in the northeastern part of the U.S. state of Florida along the west bank of the St. Johns River. As of 2020, the population was 218,245 and in 2022, that number increased to 226,589, making it the third largest county in the Jacksonville metropolitan area. While most of the county is unincorporated, there are 4 municipalities with Green Cove Springs being the county seat and the unincorporated Lakeside CDP being the largest place. It is named in honor of Henry Clay, a famous American statesman, member of the United States Senate from Kentucky, and United States Secretary of State in the 19th century. Since 1990, Clay County has transformed into a largely suburban county with the third highest household median income in Florida behind neighboring St. Johns County and Santa Rosa County.

Founded: December 31, 1858
Named for: Henry Clay
Seat: Green Cove Springs
Largest city: Lakeside
Total: 644 sq mi (1,667 km 2)
Land: 604 sq mi (1,566 km 2)
Water: 39 sq mi (101 km 2), 6.1
Density: 375/sq mi (145/km²)
ZIP code(s): 32003, 32043, 32065, 32068, 32073, 32079, 32091, 32234, 32656, 32666
Area code(s): 352, 904, 324
Time zone: Eastern: UTC-5-4
Twitter profile: clayco_fl
Official Website: https://www.claycountygov.com/
Wikidata description: county in Florida, United States
Wikidata id: Q488853
Wikidata label: Clay County
Wikidata aliases: Array
Source
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