If you spend an afternoon at a diner in a mid-sized Midwestern city, where the lunch special is still written on a chalkboard and the coffee comes in a thick ceramic mug, you will learn something from the conversations at nearby tables that no survey can fully capture. People experience a squeeze. Not dramatically, not in terms of a crisis, but in the specific way that results from seeing expenses shift in one direction while everything else essentially stays the same.
The house seems farther away. The cost of college seems unaffordable. Although it appears to be better than their parents’ retirement account, it is still insufficient. This is a common emotion. Additionally, it is either strongly supported by evidence or a serious misinterpretation of what the numbers actually show, depending on the economist you ask and the dataset they are using.
| Topic | The Shrinking Middle Class — U.S. and Global Statistical Analysis |
|---|---|
| Key U.S. Study | “The Middle Class Is Shrinking Because of a Booming Upper-Middle Class” — AEI, January 2026 |
| Authors | Stephen J. Rose & Scott Winship, American Enterprise Institute |
| Data Period Covered | 1979–2024 (U.S. Current Population Survey / ASEC) |
| Core Middle Class Share (1979) | 36% of American families |
| Core Middle Class Share (2024) | 31% of American families |
| Upper-Middle Class Growth | 10% of families (1979) → 31% of families (2024) |
| Families Below Middle Class | Fell from 54% (1979) to 35% (2024) |
| Pew Research Finding | Middle class fell from 61% (1971) to 51% (2023) of U.S. adults |
| European Data | Middle class declined in 18 of 26 European countries between 2004–2014 |
| Median Family Income Growth | Rose 52% (inflation-adjusted, size-adjusted) from 1979–2024 |
| Upper-Middle Class + Rich Income Share | Rose from 28% (1979) to 68% (2024) of all family income |
| Reference | AEI Report — The Middle Class Is Shrinking Because of a Booming Upper-Middle Class |
Everyone from progressive senators to populist vice presidents has fueled the debate over the declining middle class in American politics for decades. It has become one of those arguments where both sides cite data, both believe they are correct, and the difference between them turns out to be almost entirely about how you define the thing you’re measuring.
The percentage of Americans living in middle-class households decreased by ten percentage points over about fifty years, from 61 percent in 1971 to 51 percent in 2023, according to the Pew Research Center, one of the most often cited sources on this topic. This conclusion has been reiterated so frequently in political speeches and opinion pieces that it has become accepted knowledge. Speaking at the Center for American Progress, Michigan Senator Elissa Slotkin characterized it as a fact rather than a political statement. She is correct that the number is genuine. What it means is up for debate.
The American Enterprise Institute’s January 2026 report, authored by economists Stephen Rose and Scott Winship, uses a different methodology to reach a remarkably different conclusion about the same fundamental underlying reality. Pew defines the middle class in relative terms, establishing its income thresholds as a fixed percentage of the national median, so their argument is methodological before it is political. Rose and Winship contend that the issue with that strategy is that it yields a definition of middle-class health that does not improve even when everyone’s income increases.
Even if lower-income families have significantly more purchasing power than they did previously, more people will fall below Pew’s middle-class floor if the median grows more quickly than lower incomes. The researchers find a different picture when they use absolute thresholds, which represent a constant level of what families can actually afford. They discover that while the core middle class has decreased, it did so because more families moved up into the upper middle class rather than because more people fell into poverty.
It is worthwhile to carefully consider the numbers they generate. According to Rose and Winship, about 36 percent of American families belonged to the core middle class in 1979. That percentage dropped to 31% by 2024. There is a real decline. However, during the same time period, the upper-middle class—families whose incomes put them above the core middle class threshold—tripled, rising from roughly 10% to 31%.
In the meantime, the percentage of families whose income prevented them from achieving core middle-class status decreased from 54% to 35%. According to their analysis, more families in 2024 were above the core middle-class income threshold than below it for the first time in American history. That is a truly amazing change, and it is hardly mentioned in the political discourse surrounding the middle class.
The data from Europe either adds to the complexity of the situation or offers an alternative explanation. The middle class shrank in eighteen of the twenty-six European nations that researchers examined between 2004 and 2014. Crucially, the movement was downward rather than upward in eleven of those eighteen nations. Compared to those in higher income groups, more people moved into lower income groups.
That dynamic differs significantly from what Rose and Winship describe in the US, where inequality has increased while the dominant movement has been upward. The European experience indicates that the hollowing-out narrative, according to which families are declining rather than growing, is true and documented in many wealthy nations; it is simply not the main cause of the American trend, at least not according to these metrics.
Statistics by themselves are insufficient to resolve this tension. The income distribution has become significantly more concentrated at the top, even if Rose and Winship’s more optimistic framing—that the core middle class shrank because more families became upper-middle class—is accepted. Together, the wealthiest families and the upper middle class now account for 68% of all family income, up from 28% in 1979. The income share of the core middle class decreased.
Lower-income families’ share decreased. In the sense that many more families fell into the upper-middle class category, those gains at the upper end were genuine and widespread. However, they were also accompanied by a concentration of income that left families in the core middle class, particularly those below it, with a smaller share of a larger pie. Depending on your expectations for the economy, that may or may not be considered progress.
When faced with the discrepancy between what the data indicates and what the diner conversation sounds like, it’s difficult not to feel something. The median family income increased by 52% between 1979 and 2024, according to the AEI researchers’ calculations, proving that incomes increased across the distribution when appropriately adjusted for inflation and family size.
That is actual cash. However, it’s also true that families in the middle and lower income ranges have lost a lot of those gains due to rising housing, healthcare, and college tuition costs; as a result, their nominal incomes have increased but their financial security has not necessarily increased. Some of this is captured by the purchasing power measure, but not all of it. It’s still unclear if a single metric can adequately describe what it’s like for a family attempting to maintain a middle-class standard of living in 2026—making the mortgage payment, paying the deductible, and setting aside money for a retirement that keeps getting farther away.
Looking at the entire spectrum of evidence, it appears fairly obvious that both sides of this argument are describing something that is true while omitting something crucial. The data does not support a narrative of a widespread, all-encompassing decline in American living standards; the middle class has not hollowed out in the straightforward declensionist sense that populists on the left and right frequently suggest.
However, contrary to what the AEI framing might imply, it hasn’t just boomed upward. Even though the overall numbers appear better than the rhetoric suggests, what has happened is more complex and, in some ways, more unsettling: real gains that have been distributed so unevenly that those who feel left behind are not mistaken about their experience.
