History of Clay County, Florida in Timeline

By Popular Timelines Editorial Team · Updated: December 2, 2024

Clay County, situated in northeast Florida along the St. Johns River, experienced a population surge from 218,245 in 2020 to 232,439 in 2023, securing its position as the third largest county within the Jacksonville metropolitan area. Predominantly unincorporated, the county encompasses four municipalities, with Green Cove Springs serving as the county seat and the unincorporated Lakeside CDP holding the title of the largest place. The county's name pays homage to Henry Clay, a distinguished 19th-century American statesman, US Senator from Kentucky, and US Secretary of State.

1939: Camp Blanding Opens

Camp Blanding, a significant military training complex, opened in Clay County in 1939.

1960: Last Democratic Presidential Support

Clay County last supported a Democrat for president in 1960.

1961: First Public Library

The first public library in Clay County opened in Green Cove Springs in 1961, thanks to the efforts of local women's organizations.

February 1962: Keystone Heights Library Fire

A fire destroyed the Keystone Heights Library in February 1962.

1964: Keystone Heights Library Relocation

The Keystone Heights Library was relocated to a new building in Theme Park in 1964 after a fire destroyed the original building.

1970: Headquarters Library Opens

The Headquarters Library in Green Cove Springs opened in 1970.

1976: Orange Park Library Relocation

The Orange Park Library moved to a larger location in 1976.

1986: Middleburg-Clay Hill Library Opens

The permanent Middleburg-Clay Hill Library opened in 1986.

1990: Suburban Transformation of Clay County

Beginning in 1990, Clay County began transforming into a largely suburban county.

2010: Immigration to Clay County

A majority of foreign-born residents in Clay County entered the United States before 2010.

2019: First Coast Expressway Opens

The first segment of the First Coast Expressway opened in Clay County in 2019, marking the county's first limited-access highway.

2020: 2020 Clay County Population

In 2020, the population of Clay County, Florida was 218,245.

2020: Election of Sheriff Michelle Cook

Michelle Cook was elected Sheriff of Clay County in 2020.

2020: Births and Deaths Since 2020

Since 2020, Clay County has experienced more deaths (5,643) than births (4,846).

2020: Population Growth Since 2020

Since 2020, Clay County's population growth has been primarily driven by in-migration.

2020: 2020 Census Demographics

The 2020 United States census recorded demographic data for Clay County, including race and ethnicity.

2021: 2021 Age Demographics

According to the 2021 American Community Survey, the median age in Clay County was 40.9 years.

2021: School District Ranking

In the 2021-22 school year, Clay County's school district received an "A" grade and was ranked tenth in Florida.

August 2022: Pipeline Project Begins

In August 2022, construction began on a pipeline to restore water levels in Clay County's lakes, addressing the effects of high growth rates and increased water demand during the 2000s.