An island off the coast of Florida has scooped up the illustrious title of America’s most expensive zip code. Fisher Island residences sold for an average $9.5 million in 2025, according to new data from Property Shark, which releases an annual listing of the nation’s priciest neighborhoods. Residents of the island pay a $500,000 membership fee, the Tampa Bay Times reports, and fork out $40,000 for amenities including a golf course, access to a deepwater harbor, a private primary school, tennis courts, and a Goldilocks balance between isolation and access to downtown Miami. Elsewhere, 61 percent of all neighborhoods on the list were in California, with the Bay Area accruing the most high-value zips with 32, albeit fewer…..