The share of adults who are unpartnered has increased across the young and middle-aged, but the rise has been most pronounced among young adults. Roughly six-in-ten adults younger than 35 (61%) are now living without a spouse or partner, up from 56% just 10 years ago.

The rise in adults living without a spouse or partner has also occurred against the backdrop of a third important demographic shift: the aging of American adults. Older adults (55 and older) are more likely to have a spouse or partner than younger adults. So it is surprising that the share of adults who are unpartnered has risen even though relatively more Americans are older.