Income and wealth percentile in the United States

What the numbers say about the United States.

American income looks high in global terms. Median income per adult is around $51,700, and the average sits near $89,720. The gap between those two numbers already hints at the real story. The United States has the widest wealth distribution of any developed economy, and the spread comes almost entirely from what happens above the 90th percentile. The middle holds up reasonably well by international standards. The top runs away from everyone else.

Wealth concentration is even sharper. Median household net worth is roughly $124,000 per adult, but the average is over $816,000. The top 1% threshold for wealth sits above $8.3 million, and the top 0.1% above $50 million. Most of that comes from a handful of asset classes that have appreciated rapidly since the 1980s, especially equities, tech-company stock options, and real estate in supply-constrained metro areas. A successful exit at a venture-backed startup can move a household from the median into the top 1% of wealth in one quarter.

Geography matters more than in any other rich country. California, New York, and Massachusetts produce most of the high-income jobs, especially in technology and finance. Median household income in San Francisco or Boston runs roughly double that of West Virginia or Mississippi. Cost of living follows, but not at the same multiplier. The result is a country with two parallel income realities. Coastal metros offer high wages and high prices, attracting talent and concentrating wealth. The interior has lower wages, lower prices, and slower wealth formation. The middle class in San Jose looks rich on paper compared to the middle class in rural Kentucky, until you see what either group can actually buy with what is left after housing.

Two structural debts weigh on the middle. Healthcare costs absorb roughly 18 percent of GDP, mostly through employer plans and out-of-pocket spending that does not show up as income but shrinks disposable wealth meaningfully across a working life. Student debt totals around $1.7 trillion. A typical college-educated American in their thirties carries balance-sheet drag that European peers simply do not have. These two facts hold the middle of the wealth distribution lower than the income figures alone would suggest.

The gap by race is the other persistent fact. Median Black household wealth is roughly an eighth of median white household wealth, a ratio that has barely improved in three decades. The gap by age is widening too. Older Americans benefited from housing appreciation. Younger ones face higher home prices and student debt. Both gaps will likely widen further over the next decade, even with no new shock.