A recent Pew Research Center article states that among U.S. adults ages 50 and older, the divorce rate has roughly doubled since the 1990s.
"The climbing divorce rate for adults ages 50 and older is linked in part to the aging of the Baby Boomers, who now make up the bulk of this age group. (As of 2015, Baby Boomers ranged in age from 51 to 69.)," according to Research Analyst, Renee Stepler, author of "Led by Baby Boomers, Divorce Rates Climb for America's 50+ Population" published March 9, 2017.
Noted consequences of these "gray divorces" include becoming less financially secure than married and widowed adults, living alone at older ages, and having less satisfaction with social lives.