Washington DC’s wealth market is changing, with AI, crypto and defence-tech entrepreneurs developing closer ties with policymakers as regulation, government contracts and national security become increasingly important to their businesses.View the list

America’s wealthiest families are rarely connected to one state alone. Michael Dell, John and Laura Arnold, Fernando De Leon and the Bass family have all built their principal fortunes or businesses in Texas while retaining investments, family offices, philanthropy, property or cultural interests in New York.View the list

Texas is attracting wealthy families, entrepreneurs and companies, drawn by its lack of state income tax, relatively low living costs and strong business environment. Oil and gas remain important sources of wealth, particularly in Houston, but the state’s economy has become much more diverse. Private equity, property, technology, healthcare, aerospace, manufacturing and energy infrastructure now contribute to a broader wealth market.View the list

California remains one of the world’s leading centres of private wealth creation, from the Gold Rush and Hollywood through Napa and Silicon Valley to today’s AI boom. In November 2026 voters will decide Proposition 40, a proposed one-off tax of up to 5% on residents with more than $1 billion in covered net assets (including business interests, securities and intellectual property, but generally excluding real property). View the list