Residents in Fisher Island’s 33109 zip code earned an average $2.21m in income in 2016, the most recent year Bloomberg studied (part-time residents are excluded). Residents of second place Atherton, California earned an average $1.28m.
To make the list, the zip code had to include at least 200 tax returns and 500 housing units. As of 2015, Fisher Island 218 households and a total population of 467, Census data showed.
Fisher Island is an unincorporated area in Miami-Dade County, accessible only by ferry.