In 1960, approximately 5% of births in the United States occurred outside of marriage. By 1990, that figure had risen to 28%. Today, it stands at 40% — the highest rate in American recorded history.
That number represents a fundamental transformation in how American families are formed, and it carries consequences that researchers have documented extensively across economics, child development, public health, and criminal justice.
This article examines what the data shows, why this shift occurred, who is most affected, and what it means for the children being raised in these circumstances.
The Scale of the Shift
The 40% non-marital birth rate is not evenly distributed. It is concentrated in specific demographic groups and communities in ways that tell a more nuanced story than the headline figure.
By Race and Ethnicity
- Black Americans: 70% of births are to unmarried mothers — a rate that has remained at or above 70% since the mid-2000s.
- Hispanic Americans: 53% of births are outside of marriage.
- White Americans: 28% of births are outside of marriage — up from less than 5% in 1965.
- Asian Americans: 12% of births are outside of marriage — the lowest rate of any major racial group.
By Education
Education is actually a stronger predictor of non-marital childbearing than race. Among women without a high school diploma, nearly 70% of births are outside marriage. Among women with a bachelor’s degree, the rate is under 10%.
This educational divide — sometimes called the “diverging destinies” pattern by sociologist Sara McLanahan — is one of the starkest forms of inequality in modern America.
By Age
Among women under 25, roughly 60% of births occur outside marriage. The rate drops sharply with age: by 30, the majority of births are to married women.
Why Did This Happen?
The rise of non-marital births is not a single-cause story. Several forces converged.
The Collapse of the Working-Class Marriage Market
As documented by economists and sociologists including William Julius Wilson, the disappearance of stable working-class jobs — particularly in manufacturing — removed the economic foundation on which marriage had rested. Working-class men who previously held factory jobs that paid family-sustaining wages found themselves unemployed or underemployed by the 1980s and 1990s.
Wilson’s research in The Truly Disadvantaged (1987) showed that in Black urban communities, the number of “marriageable men” — employed men with stable incomes — had fallen sharply, making marriage a practical impossibility for many women even if they wanted it.
Cultural Normalization
The social stigma around non-marital childbearing, which was intense through the 1960s, diminished dramatically in subsequent decades. The women’s movement, sexual revolution, and expansion of women’s economic independence all contributed to a cultural shift that removed the social pressure to marry before or because of pregnancy.
The Contraception Paradox
The widespread availability of effective contraception since the 1960s was expected to reduce non-marital births by preventing unintended pregnancies. The opposite occurred. Economists George Akerlof and Janet Yellen, in a landmark 1996 paper, documented what they called the “reproductive technology shock”: the availability of contraception and abortion led to an implicit social understanding that pregnancies were now always chosen, which undermined the expectation that men would marry women they had impregnated. Non-marital births rose as a result.
What Happens to Children Born Outside of Marriage
This is where the data becomes most significant and most sobering.
Child Poverty
The poverty rate for children in married-parent households is approximately 8%. For children in single-mother households, it is approximately 39%. This gap has been documented consistently for decades and holds across different time periods and methodologies.
The Heritage Foundation’s Robert Rector has calculated that if single-parent families had the same poverty rate as married-parent families, the overall child poverty rate in America would fall by roughly 80%.
Educational Outcomes
Children raised by single parents — controlling for income — have lower academic achievement on average, higher dropout rates, and lower rates of college completion. They score lower on reading and math tests at every grade level. The effects are not explained entirely by income; they persist when researchers control for family earnings.
Health and Mental Health
Children from single-parent homes have higher rates of:
- Asthma and other chronic physical conditions
- Depression and anxiety
- Behavioral disorders (ADHD diagnoses, conduct disorders)
- Teen pregnancy
- Substance abuse
A 2019 meta-analysis in Child Development examining data from 22 countries found that children in single-parent families showed poorer social-emotional outcomes than children in two-parent families across all countries studied.
Criminal Justice
The statistical relationship between father absence and criminal behavior is one of the most consistently replicated findings in criminology. Boys raised without fathers are:
- Twice as likely to be incarcerated as adults
- Significantly more likely to commit violent crimes
- More likely to join gangs
Research by Cynthia Harper and Sara McLanahan, using data from the National Longitudinal Survey of Youth, found that boys who grew up apart from their fathers were more than twice as likely to end up in jail or prison, even after controlling for race, income, and neighborhood characteristics.
The “Diverging Destinies” Problem
Sociologist Sara McLanahan coined the term “diverging destinies” to describe what is arguably the most important — and least discussed — inequality trend in America.
College-educated women are having children primarily within marriage, raising them in stable two-parent households, and investing heavily in their children’s education, health, and enrichment activities. Their children are well-positioned for economic success.
Non-college women are increasingly having children outside of marriage, in less stable households, with fewer economic resources and less time for intensive parenting. Their children face significant headwinds.
The result is that family structure has become one of the primary mechanisms through which inequality is transmitted across generations.
Sources
- CDC National Center for Health Statistics, “Births: Final Data,” 2023
- Sara McLanahan and Gary Sandefur, Growing Up with a Single Parent, 1994
- Sara McLanahan, “Diverging Destinies: How Children Are Faring Under the Second Demographic Transition,” Demography, 2004
- William Julius Wilson, The Truly Disadvantaged, 1987
- George Akerlof and Janet Yellen, “An Analysis of Out-of-Wedlock Births in the United States,” Brookings Institution, 1996
- Cynthia Harper and Sara McLanahan, “Father Absence and Youth Incarceration,” Journal of Research on Adolescence, 2004
- Robert Rector, “Marriage: America’s Greatest Weapon Against Child Poverty,” Heritage Foundation, 2022