Duval County Map, Florida

Duval County is located in the Northeast Florida region of Florida, one of 67 counties that make up the state. Its county seat, Jacksonville, is the administrative hub — home to the courthouse, county commission chambers, tax collector, property appraiser, supervisor of elections, and clerk of the circuit court.

The county spans a total of 918 square miles — 762 of land and 156 of water — and operates on Eastern Time. Federal agencies including the U.S. Census Bureau, USGS, and FEMA reference the county by its FIPS code, 12031, in datasets, boundary files, and hazard mapping.

Duval County shares borders with 4 neighboring counties: Nassau County, Baker County, Clay County, St. Johns County. Use the interactive map above to explore where those boundaries meet or jump directly to any neighboring county page for a side-by-side comparison.

The St. Johns River — one of few U.S. rivers flowing north — bisects the county. Atlantic beaches, coastal marsh, pine flatwoods, and the Timucuan Ecological and Historic Preserve line the eastern edge.

The county's overall footprint — 762 square miles of land plus 156 square miles of water — places it in the mid-range of Florida's 67 counties by area. Elevation across most of Florida is modest, and land-use, drainage basins, and habitat corridors defined by state and federal agencies (Florida Department of Environmental Protection, U.S. Fish & Wildlife Service, and the Water Management Districts) shape how growth and conservation coexist here.

Financial services (JPMorgan Chase, Bank of America, Fidelity), health care (Baptist Health, Mayo Clinic Jacksonville, UF Health), logistics (JAXPORT, CSX headquarters), U.S. Navy (NAS Jacksonville, NS Mayport), and insurance drive the economy.

Employment, tax base, and land use in Duval County reflect its location in Northeast Florida and its position as one of Florida's most populous counties. Economic development authorities, chambers of commerce, and the Florida Department of Economic Opportunity publish updated employer and workforce data for the county on their portals.

Duval County was created in 1822, one year after Florida became a U.S. territory. Jacksonville consolidated with Duval County in 1968, creating a unified government spanning the entire county except four independent beach municipalities and Baldwin.

Established in 1822, Duval County is one of Florida's earliest counties. Its boundaries, seat, and government have evolved through territorial, statehood, Reconstruction, and modern eras — a lineage documented by the Florida Historical Society, the State Archives of Florida, and the Duval County Historical Commission or equivalent local body.

Jacksonville Beach, TIAA Bank Field (Jaguars), Cummer Museum, Museum of Contemporary Art Jacksonville, Kingsley Plantation, Little Talbot Island, and the St. Johns Riverwalk.

Whether you're planning a weekend trip, a longer stay, or a day drive from a neighboring county, Duval County offers a mix of natural, cultural, and community attractions tied to its Northeast Florida identity. For the latest hours, admission fees, and seasonal events, check the county's official tourism development council and the Florida State Parks portal (floridastateparks.org).