The Richest and Poorest Neighborhoods in the United States

Greenwich transitioned from a colonial port town into a wealthy suburb during the 20th century as New York City expanded outward. The rise of hedge funds and financial services transformed it into a hub for Wall Street executives and investment professionals.

Its wealth is driven by proximity to Manhattan, favorable tax structures, and concentrations of finance-sector income. Large estates, private schools, and commuter access reinforce high household earnings and long-term economic insulation.