Collier County Map, Florida

Collier County is located in the Southwest Florida region of Florida, one of 67 counties that make up the state. Its county seat, Naples, 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 2,303 square miles — 1,998 of land and 305 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, 12021, in datasets, boundary files, and hazard mapping.

Collier County shares borders with 5 neighboring counties: Lee County, Hendry County, Monroe County, Broward County, Miami-Dade 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.

Gulf beaches and mangrove estuaries on the west; sawgrass, cypress strands, and hardwood hammocks across Big Cypress and the western Everglades. Ten Thousand Islands lie south of Marco.

The county's overall footprint — 1,998 square miles of land plus 305 square miles of water — places it among the largest 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.

Tourism, real estate, health care (NCH Healthcare, Physicians Regional), professional services, and agriculture — Immokalee is a major winter vegetable and citrus center.

Employment, tax base, and land use in Collier County reflect its location in Southwest Florida and its position in the state's middle tier of population. 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.

Created in 1923 from Lee County. Barron Collier financed the completion of the Tamiami Trail (US-41) across the Everglades in exchange for the new county's creation and naming.

Established in 1923, Collier County is one of Florida's modern 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 Collier County Historical Commission or equivalent local body.

Naples Pier, Fifth Avenue South, Marco Island, Corkscrew Swamp Sanctuary, Big Cypress National Preserve, Everglades National Park (Gulf side), and the Naples Zoo.

Whether you're planning a weekend trip, a longer stay, or a day drive from a neighboring county, Collier County offers a mix of natural, cultural, and community attractions tied to its Southwest 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).