1 in 4 Americans reaches 40 without ever marrying. What’s changed?
Turning 40 used to come with a fairly predictable set of expectations: marriage, perhaps children, and a household that looked a lot like the one your parents built.
For a growing share of Americans, that script no longer applies.
Pew Research Center found that 25% of U.S. 40-year-olds had never been married in 2021, up sharply from 20% in 2010. Go back further and the change becomes even more striking: marriage by 40 was once overwhelmingly the norm.
But those numbers don’t necessarily mean Americans have stopped wanting relationships. Some are living with partners without marrying. Others are postponing marriage because of finances, education, career choices, or difficulty finding the right partner. And some simply don’t see marriage as essential to building a fulfilling adult life.
So why are so many Americans reaching 40 without ever marrying? The data reveal a much bigger transformation in relationships, economics, and what Americans now expect adulthood to look like.
Tracing the Historical Trajectory
Marriage has historically served as a cornerstone of American societal norms. However, a profound paradigm shift has unfolded since 1980, when a mere 6% of 40-year-olds remained unmarried. This trend of delaying or eschewing marriage altogether has been particularly pronounced among individuals born from the 1960s onwards. The data from 2021 heralds a new milestone in this ongoing trend.
Embracing Cohabitation as an Alternative
While a considerable portion of unmarried 40-year-olds finds themselves in romantic relationships, the majority opt out of formal marital bonds. Notably, in 2022, 22% of never-married adults aged 40 to 44 chose cohabitation as a viable alternative. This underscores a paradigmatic shift wherein while marriage rates witness a decline, non-marital partnerships climb.
Exploring Demographic Variations
The percentage of 40-year-olds who have never been married in 2021 exhibits considerable variance across various demographic dimensions.
Gender
A higher proportion of unmarried men is observed compared to women.
Race and Ethnicity
Black individuals in the 40-year-old bracket demonstrate a higher likelihood of remaining unmarried compared to their Hispanic, White, and Asian counterparts.
Education Level
Individuals lacking a four-year college degree exhibit a higher propensity for unmarried status than those with at least a bachelor’s degree. Notably, one-third of individuals with a high school diploma or less remain unmarried, in contrast to 26% with some college education and 18% with a bachelor’s degree or higher.
Pondering the Future Landscape
It’s imperative to acknowledge that not marrying by the age of 40 doesn’t eliminate the possibility of future nuptials. Data indicates that approximately one-in-four 40-year-olds who remained unmarried in 2001 eventually tied the knot by age 60. If this trend persists, a similar proportion of today’s never-married 40-year-olds might embark on marital journeys in the decades ahead.
Final Thoughts

The evolving dynamics of marriage among 40-year-olds in the United States constitute a multifaceted phenomenon shaped by an interplay of demographic and societal variables. The data reviewed sheds light on the intricate tapestry of relationships and family structures, offering valuable insights into the evolving fabric of American society.
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