Each U.S. Generation Still Earns More Than the Last, But the Gaps Are Shrinking Fast.

The Numbers Are Real. So Is the Slowdown.

Generational progress in American incomes is still moving forward, though at a slower pace.

A discussion paper published by the Federal Reserve Board of Washington D.C. in 2024, reported by Statista's Katharina Buchholz, tracked median household incomes across generations at ages 36 to 40. The verdict: millennials earned 18% more than Gen X did at the same life stage. Gen X, in turn, earned 16% more than Baby Boomers.

Those numbers sound decent until you see what prior generations managed.

What the Post-War Era Actually Looked Like

Boomers earned 27% more than the Silent Generation at that same age window. The Silent Generation, coming of age after World War II, earned 34% more than the Greatest Generation before them.

The cumulative picture is more dramatic. Taking the Greatest Generation — born 1900 to 1927 — as the baseline, the Silent Generation earned 34% more in inflation-adjusted terms. Boomers made a cumulative 70% more. Gen X reached 97% more. Millennials are now at 133% more than that baseline, according to the Fed paper.

So yes, wealth and income grew substantially over the 20th century. The problem is the rate of improvement per generation has been cut roughly in half since the post-war peak.

Hours Worked: The Story Behind the Numbers

The Fed data also tracks labor input. The Silent Generation worked 14% more hours than the generation before it. Boomers added another 14% on top of that. Since then, working hours have leveled off across generations.

That plateau matters. Some of the income gains in prior generations came from people simply working more. The slower income growth since Boomers isn't happening alongside a compensating rise in leisure — hours are roughly flat, income gains are just smaller.

The 50% Problem

The starkest single number in this data comes from a study published in 2017, which found that only 50% of people born in 1984 earned more than their parents did by age 30. For Americans born in 1940 — turning 30 in 1970 — that figure was above 90%.

This is what the Fed's median household data shows from the ground up. The post-war American experience — where outearning your parents was the default, not the exception — no longer applies to roughly half the country.

The Strongest Case for Optimism

Fair point for the skeptics of the pessimistic read: aggregate income levels are still rising, and the cumulative gains since 1927 are enormous. A millennial born in 1982 who turned 40 in 2022 is still, on average, earning more in real terms than a Gen Xer at 40 — not dramatically more, but more. And more people have access to at least a middle-class standard of living today than at any prior point in U.S. history, by the Fed paper's own framing.

The argument that "things are still better" is technically correct. The question is whether incremental improvement at a declining rate qualifies as the version of the American Dream that drew generations of immigrants here.

What's Actually Behind the Slowdown

The Fed paper doesn't assign a single cause, and neither should anyone who's being honest. Structural factors are numerous: wage stagnation in non-college-educated sectors, rising costs for housing, healthcare, and education that eat into nominal income gains, and shifts in family formation patterns that affect household income counts. None of that is captured cleanly in a single percentage.

What the data does establish is that the mechanism — hard work translating into reliably higher living standards for the next generation — has weakened measurably since roughly the 1970s.

The Open Question

The Fed paper examined millennials only through 2022, when a millennial born in 1982 turned 40. That was the last year of the study's window. Whether millennials' income trajectory improves further in their peak earning years — or whether the 18% gap over Gen X holds or narrows — is a question the data can't yet answer. The Fed has not announced an updated study covering the post-2022 period.