The Miami Metropolitan Area comprises Miami-Dade County, Broward County, and West Palm Beach.
From Wikipedia:
As of 2023, the Miami metropolitan area is defined by the U.S. Office of Management and Budget as the Miami-Fort Lauderdale-West Palm Beach Metropolitan Statistical Area (MSA), with a 2020 population of 6,138,333. The MSA is made up of three "metropolitan divisions" :
Miami-Miami Beach-Kendall Metropolitan Division, coterminous with Miami Dade County (2020 population 2,701,767).
Fort Lauderdale-Pompano Beach-Sunrise Metropolitan Division, coterminous with Broward County (2020 population 1,944,375).
West Palm Beach-Boca Raton-Delray Beach Metropolitan Division, coterminous with Palm Beach County (2020 population 1,492,191).
It has an area of 6,137 sq. mi. You could fit 8 Miami Metropolitan Areas into England!
The MMA has a population of 6,138,333.
For transportation, you can use the Tri-Rail.
You can also use the Brightline.
There is also the Amtrak.
This is the Greyhound.