What is the wealthiest zip code in the United States? Fisher Island, a 216-acre barrier island near Miami, is once again the wealthiest zip code (33109) with an average income in 2018 of $2.2 million, according to the Bloomberg analysis. In second-place Atherton — zip code 94027 — earnings surged by a third to $1.72 million.What is the worst ZIP code in America?
Zip code: 97414 │ Broadbent, Oregon. 1. Zip code: 15929 │ East Wheatfield, Pennsylvania. People who live in areas that did poorly during the Great Recession and didn’t make a financial comeback could be “trapped” in a “Catch-22” situation, according to the Economic Innovation Group.