No. 39 Richest Zip Code: 10504, Armonk, N.Y.

No. households: 2,622
Pct. change in no. households since 2000: 12.29
Average household income: $252,400
Average household net worth: $1,291,022

Bordering Connecticut and a number of shimmering lakes, Armonk is a New York City suburb 36 miles north of Midtown Manhattan along Interstate 684. It is best known as the site of IBM's world headquarters. The predominant cluster is elite couples and singles.

Photography by: Chuck Fishman/Getty Images
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