American Dream Index · Methodology
The American Dream Index is a single number — the annual cost of a fixed 1980 middle-class lifestyle — tracked from 1980 to today. This document explains what's in the basket, what we hold constant, what we let float, and what the data does and doesn't say.
In 1980, an unremarkable middle-class American family had three children, lived in a four-bedroom home, owned two cars, carried employer-sponsored health insurance, and took a modest annual vacation. That family composition was statistically common — roughly a third of American women in their early 40s had four or more children, and three-kid households were unremarkable. By the 2020s, only one in nine American women in their early 40s had four or more kids. The most common family size dropped to two. The lifestyle that 1980 took for granted has become statistically rare.
The American Dream Index measures what that 1980 lifestyle costs to assemble each year from 1980 to 2025. The headline finding is not that the cost has become unaffordable. The headline finding is that it was never affordable. The middle-class American life that 1980 promised has been priced beyond the median family's reach for at least 45 years, and the gap has not closed.
The ADI is a basket of ten spending categories that together represent the operating cost of the prototypical middle-class American household. Each category contains specific quantities — not dollar amounts — that are held constant across all years.
The family composition is fixed at two adults aged 35-45, three teenage children, one medium-sized dog, one owned four-bedroom home, and two used small sedans. The ten spending categories are: groceries (calibrated to USDA dietary guidelines for a family of five), one weekly family dinner out, all-in housing carrying cost (mortgage at each year's actual rate plus property tax, insurance, and maintenance), residential utilities, communications and media, transportation (two cars at 12,000 miles each, costed via AAA's per-mile methodology), employer health insurance plus out-of-pocket, direct federal-state-local taxes computed on median household income, pet costs, and modest discretionary spending (an annual driving vacation, weekly date nights for the parents, and one activity per child).
The full basket specification, item by item with every quantity and source, is published as a separate document. It is reproducible end-to-end from publicly available BLS, Census, FHFA, KFF, EIA, AAA, IRS, and Freddie Mac data.
This is the same fixed-specification approach the Reality Index uses for individual items. We hold quantities constant — 156 pounds of ground beef per year, 24,000 vehicle miles, 10,500 kilowatt-hours of electricity — and we let prices float. Where prices have grown faster than CPI, the basket's total grows faster than CPI. Where prices have grown slower, the basket grows slower. The aggregate answer tells you what's happened to the cost of the specific lifestyle, not what's happened to consumer behavior.
The choice has consequences. The ADI does not adjust for the fact that the modern small sedan is a better, safer, more efficient vehicle than a 1980 small sedan. It does not adjust for the fact that the modern 2,200 square foot home has more bathrooms, better insulation, and central air conditioning that a 1980 home of the same square footage might not have had. Where the product specification has improved while the basket specification stays constant, the ADI captures real inflation in dollars but does not credit families for the higher quality they receive. This is the trade-off of measuring like with like across decades.
The cost of the 1980 American Dream rose 4.45 times in nominal dollars between 1980 and 2025. The Consumer Price Index for all items rose 3.96 times over the same period. Median household income rose 4.89 times. Three things happened simultaneously, and none of them tell the simple story.
First, the basket grew faster than CPI. The Reality Index thesis — that CPI understates inflation in the categories families cannot escape — holds in aggregate. Housing carrying cost grew 4.2x, health care 7.5x, and the post-2020 spike pushed groceries to 3.3x. The basket as a whole grew about $15,000 faster than the CPI All Items rate would have predicted.
Second, median household income grew faster than both. Wages, in aggregate, grew faster than this specific basket grew. As a share of median family income, the basket has actually fallen modestly, from 159% in 1980 to 145% in 2025. The squeeze did not get sharper. It also did not go away.
Third, the basket has been unaffordable for the median family every single year of the 45-year window. There is no period during which the typical American family could comfortably support the lifestyle the country has always told them was their birthright. Families have always borrowed, stretched, doubled up, postponed, or simply done without. The post-2020 inflation spike sharpened this — communications, health care, and the housing carrying cost have all jumped — but it is the continuation of a pre-existing condition, not the onset of a new one.
The ADI is a fixed-basket index of what a specific lifestyle costs. It is not a measure of what the typical family actually spends, what they earn, or what they could afford. It is a measure of the cost of the lifestyle the country once described as ordinary middle-class American life.
The ADI is not a substitute for CPI. CPI measures the cost of a substitutable, quality-adjusted basket that captures aggregate consumer behavior. The ADI measures the cost of a fixed specification of consumption that captures unchanged aspiration. Both are useful. They are not in competition. The Federal Reserve will continue to use CPI for monetary policy. Families wondering whether the American Dream is still within reach will find the ADI more directly informative.
The ADI is not a partisan index. The pattern it reveals — that the basket has been unaffordable on median wages for 45 years across both Democratic and Republican administrations — is structural, not cyclical. Different politicians presided over different periods of this gap. None of them closed it. The ADI's editorial argument is that the gap is older, deeper, and more structural than the political class is willing to acknowledge.
Families have always known that the American Dream is hard to achieve. The political class has always known that wages have not kept pace with the cost of the things wages should be buying. The mainstream economic statistics rarely confirm what families and politicians both know, because those statistics measure things — aggregate inflation, real wages, productivity growth — that aren't the same as the question families actually want answered.
The question is: can a middle-class American family, on a median American income, afford the middle-class American life that the country has always promised? The American Dream Index says, with all the rigor we can muster from public data: no, and it never has, for at least 45 years.
That gap between official statistics and lived experience is what the entire Reality Index project exists to make visible. The ADI is the project's headline number because it puts the gap in dollars and cents that anyone can verify, against a specification anyone can argue with, using only data anyone can download.