Both men and women are less likely to marry in their twenties
By age 25, about one-third of men and less than one-half of women have ever been married. A generation ago, about two-thirds of men and three-fourths of women had married by age 25.
Percent ever married by age 25, by gender

Source: U.S. Census Bureau, Survey of Income and Program Participation (SIPP), 2008.