Shifts in College Gender Gap Squeeze Working-Class Women Out of Marriage Market

A long-term reversal in American higher education enrollment is fundamentally altering the nation’s marriage landscape, with working-class women bearing the brunt of a shrinking pool of financially stable partners.

According to a working paper published by the National Bureau of Economic Research (NBER), college-educated women have kept their marriage rates remarkably stable—staying above 70% for decades—despite a dramatic drop in the relative number of college-educated men. To maintain those rates, educated women are increasingly marrying men without four-year degrees, particularly those in the upper tier of non-college earnings.

The study, authored by economists Clara Chambers of Yale University, Benjamin Goldman of Cornell University, and Joseph Winkelmann of Harvard University, tracked American birth cohorts from 1930 to 1980. Over that timeframe, the gender ratio among college graduates flipped dramatically, moving from 1.8 college-educated men for every college-educated woman down to 0.8. Today, U.S. colleges enroll roughly 1.6 million more women than men, reflecting a multi-decade stagnation in male degree completion alongside steady gains for female students.

This demographic imbalance forced a shift in marital choices. The proportion of U.S. marriages where the wife holds a bachelor’s degree and the husband does not quadrupled across the studied generations, rising from 2.3% in the 1930 cohort to 9.6% in the 1980 cohort. However, college-educated women are not pairing randomly across the non-college population. Instead, they disproportionately marry non-college men at the top of the wage scale—whose average earnings reached $68,400—leaving men with lower earnings behind.

For non-college men who did not marry a college graduate, average earnings fell to approximately $46,000 over the same period. This concentrated selection process, described by researchers at the Institute for Family Studies as “skimming,” has severely restricted marriage opportunities for women without higher education.

The NBER findings show that the share of non-college men available as prospective husbands for non-college women—defined as men earning above the national median income who are not already married to a college graduate—cut in half, falling from 72.9% in the 1930 birth cohort to 35.3% in the 1980 cohort. Consequently, the marriage rate for non-college women plummeted from 78.7% to 52.4%. Projections indicate that women born in the mid-1990s without a degree may become the first U.S. generation where over half remain unmarried at age 45.

The structural changes mirror broad transformations in the American economy over the past half-century. Well-compensated unionized manufacturing jobs, which historically allowed men without degrees to earn middle-class incomes, have dwindled. Meanwhile, expanding sectors like healthcare and education heavily employ women and frequently require formal post-secondary credentials. Women now hold more U.S. payroll positions than men, a shift driven by long-term structural changes in employment rather than short-term economic cycles.

The social implications extend beyond marital status. Roughly 16% of non-college-educated men currently live with their parents—double the rate of their college-educated peers—against a backdrop of a 150% surge in national housing costs since 1960 alongside stagnant inflation-adjusted wages. Sociological research consistently links marriage with improved long-term health outcomes, greater economic stability, and reduced social isolation in later life.

While earlier research, such as a landmark 2014 study on educational sorting by economist Jeremy Greenwood and colleagues, connected marriage trends to rising household income inequality, the new study underscores how localized economic conditions dictate these dynamics. Regions with higher rates of male employment and lower incarceration rates demonstrate narrower marriage gaps between college and non-college women, illustrating that male economic security and female marriage prospects remain deeply intertwined.