Citigroup (NYSE: C) is retrenching from some of the wealthiest U.S. suburbs, abandoning part of its years-long efforts to cultivate affluent customers in areas including Main Line Philadelphia.

The New York bank this month said that it would cut 11,000 jobs and 84 branches, including 44 locations in the United States. The bank said then that it would close locations in Pennsylvania, Massachusetts and New Jersey; now it turns out that 13 of the affected branches are in the Philadelphia suburbs, in counties that regularly make lists of the country's richest and that serve as bedroom communities to white-collar workers in Philadelphia, Wilmington and even New York City.

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