Reaching a seven-figure nest egg was once considered a rare milestone. However, according to findings from the Federal Reserve Survey of Consumer Finances, more Americans are reaching seven figures than ever before. In 2025, 7% of U.S. families, representing approximately 9.4 million households, held at least $1 million in retirement accounts, up from 5% in 2022.
The Reality Behind the Balances: Averages vs. Medians
While millionaire accounts grab attention, broader participation figures illustrate a different financial reality across the nation:
Account Participation: Only 55% of American families currently own a dedicated retirement account.
The Seven-Figure Club: Among active account holders, 13% have accumulated a balance of $1 million or more.
Median vs. Mean: Across all retirement accounts, the median balance rose 11% to $106,000 in 2025. The mean (average) balance reached $451,000 (up 23%), pulled substantially higher by top-tier earners.
Broader Net Worth: When factoring in total household assets, such as primary home equity, 22% of U.S. families maintain a total net worth of at least $1 million.
The Generational Divide: Compounding Over Time
The data shows that wealth accumulation accelerates significantly the longer savers stay invested:
Seniors (75+): Balances for this cohort surged 79% between 2022 and 2025, climbing from $143,400 to a median of $257,000. This tied them with the 65–74 age bracket, whose median balance rose 17% to $257,000. As the first generation to hold access to defined-contribution 401(k) plans throughout most of their working lives, seniors aged 75 and older achieved the highest median net worth of any age bracket at $505,000.
Prime Accumulation Years: Savers aged 55–64 increased their median balances by 18% to $239,000. The 35–44 cohort experienced a 24% increase, rising from $49,200 to $61,000, while balances for those aged 45–54 grew at a more modest 6% rate to $133,000.
Young Savers (Under 35): By contrast, median balances for those under 35 remained virtually flat. Over three years, their median savings crept up just 2%, rising by $300 from $20,700 to $21,000, as inflation, housing expenses, and student debt limited early retirement contributions.
The Power of Market-Driven Growth
What generated this significant expansion at the top? Fidelity reported a record 769,000 millionaire 401(k) accounts across its platform, roughly 3% of all participants, marking a 30% jump year-over-year. Financial analysis attributes this growth primarily to the compounding effects of sustained equity market returns, rather than sudden surges in employee contribution rates or debt elimination.
Long-term exposure to market growth and steady contributions create an exponential compounding effect over several decades.