Miami-Dade County Map, Florida

Miami-Dade County is located in the South Florida region of Florida, one of 67 counties that make up the state. Its county seat, Miami, 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 2,947 square miles — 1,897 of land and 1,050 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, 12086, in datasets, boundary files, and hazard mapping.

Miami-Dade County shares borders with 3 neighboring counties: Broward County, Collier County, Monroe 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.

Coastal ridge, Biscayne Bay, the Atlantic barrier islands (Miami Beach, Key Biscayne), the Everglades on the west (Everglades and Biscayne National Parks both partly in the county), and the agricultural Redlands south of Homestead.

The county's overall footprint — 1,897 square miles of land plus 1,050 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.

International trade (PortMiami is the world's largest cruise port), aviation (MIA is a top-10 U.S. hub and the busiest U.S. airport for international freight), banking and Latin America financial services, tourism, real estate, media (Spanish-language networks), and health care.

Employment, tax base, and land use in Miami-Dade County reflect its location in South 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.

Dade County was created in 1836 during the Second Seminole War. Henry Flagler's railroad reached Miami in 1896, incorporating the city. The 1959 Cuban Revolution triggered mass migration that reshaped the county; further waves from Haiti, Nicaragua, and Venezuela followed.

Established in 1836, Miami-Dade 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 Miami-Dade County Historical Commission or equivalent local body.

South Beach, Ocean Drive, Wynwood Walls, Vizcaya Museum & Gardens, Everglades and Biscayne National Parks, Little Havana, PortMiami cruises, and Coconut Grove.

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