According to the latest available census data, the percentage of U.S. adults who have never been married has hit a new, all-time high.
In 1960, about one in ten adults over the age of 25 fell into that category.
By 2012, the number had jumped to one in five.
There's no formal consensus about what's driving the numbers, but data shows that among young adults who say they do want to get married, the economy is an issue.
34 percent of them cite financial security as an obstacle to tying the knot.
Other analysts point to the eradication of social taboos on cohabitation and out of wedlock childbearing.
Jennifer Marshall from the Heritage Foundation says: "Where there used to be a lot of social support for marriage and for couples interested in getting married, that doesn't't exist so much anymore."