Question: Which American weekly business magazine labeled Potomac () as twenty-ninth richest zip code in the United States in 2011?
Sentence (from "Potomac, Maryland"): Bloomberg Businessweek labeled Potomac as the twenty-ninth richest zip code in the United States in 2011, stating that it had the largest population of any U.S. town with a median income of more than $240,000.
Relevant evidence: Yes