Marriage rates continue to decline in the U.S.

For the first time since the U.S. began tallying marriages, more Americans of prime marrying age have stayed single rather than tied the knot, the culmination of a tectonic shift in the role of marriage and relationships that began in the 1960s.

High divorce rates, rising co-habitation and a tendency to delay marriage are main factors.

Marriage rates among young adults have been dropping for decades. But data released Tuesday by the Census Bureau show that for the first time the proportion of people between the ages of 25 and 34 who have never been married exceeded those who were married in 2009—46.3% versus 44.9%...

The long-term slide in marriage rates has pushed the proportion of married adults of all ages to 52% in 2009, according to the Census, the lowest share in history. In 1960, 72.2% of adults over 18 were married...

A slowdown in marriage rates doesn't mean the end of cohabiting relationships. As marriage rates have fallen, the number of adults living together has skyrocketed, according to Mr. Mather's analysis. Men and women are living together as an alternative or a first step towards matrimony. While marriage has fallen among younger people, the probability of getting married at some point in life still remains at about 90%...

The rest of the story is at The Wall Street Journal.